Интегральные DC/DC - преобразователи - Решения

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Описание:
Оценочная плата LM2676S-ADJEVM (EVM) помогает разработчикам оценить работу и производительность понижающего преобразователя с широким диапазоном входных напряжений Simple Switcher® LM2676. LM2676 - это простой в использовании DC/DC преобразователь работающий на фиксированной частоте, для которого требуется минимальное количество внешних компонентов. Плата LM2676S-ADJEVM настроена на выходное напряжение 5,0 В и частоту переключения 260 кГц.
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Описание:
The MAX104/MAX106/MAX108 evaluation kits (EV kits) are designed to simplify evaluation of the devices' analog-to-digital converters (ADCs). Each EV kit contains all circuitry necessary to evaluate the dynamic performance of these ultra-high-speed converters, including the power-supply generation for the PECL termination voltage (PECLVTT). Since the design combines high-speed analog and digital circuitry, the board layout calls for special precautions and design features.

Connectors for the power supplies (VCCA/VCCI, VCCD, VCCO, VEE), SMA connectors for analog and clock inputs (VIN+, VIN-, CLK+, CLK-), and all digital PECL outputs simplify connection to the EV kit. The four-layer board layout (GETek™ material) is optimized for best dynamic performance of the MAX104 family.

The EV kits come with a MAX104/MAX106/MAX108 installed on the board with a heatsink attached for operation over the full commercial temperature range.
Возможности:

  • 50Ω Clock and Analog Inputs Through SMA Coaxial Connectors
  • ±250mV Input Signal Range
  • Demultiplexed Differential PECL Outputs
  • On-Board Generation of PECL Termination Voltage (PECLVTT)
  • On-Board Generation of ECL Termination Voltage (ECLVTT)
  • Separate Analog and Digital Power and Ground Connections with Optimized Four-Layer PCB
  • Square-Pin Headers for Easy Connection of Logic Analyzer to Digital Outputs
  • Fully Assembled and Tested

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The MAX1231B/MAX11633/MAX11635 evaluation systems (EV systems) include one master board and one of three daughter boards. The EV systems also include Windows XP®-, Windows Vista®-, and Windows® 7-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the various ADCs. The master board (MAX116XXSPIMB) connects to a PC's USB port and allows the transfer of SPI commands to the corresponding daughter board.

The daughter boards are fully assembled and tested PCBs that demonstrate the capabilities of the MAX1030, MAX1031, MAX1230, MAX1231, MAX11624, MAX11625, MAX11632–MAX11635, MAX11642, and MAX11643 300ksps, 8-/10-/12-bit, 3V/5V, low-power, high-speed SPI ADCs with internal or external references.

Each EV kit daughter board evaluates different ADCs, but only the default ADC referenced in the EV kit daughter board is installed on the board. Contact the factory for free samples of the other pin-compatible ADCs to evaluate these devices or to order individual boards.

Возможности:

  • USB Powered (No External Power Supply Required)
  • Daughter Board Powered by the Master Board
  • 4/16 ADC Channel Inputs
  • 10MHz SPI Interface
  • Windows XP-, Windows Vista-, and Windows 7-Compatible Software
  • Time Domain, Frequency Domain, and Histogram Plotting in the EV System Software
  • Frequency, RMS, Min, Max, and Average DC Calculations in the EV System Software
  • Collects Up to One Million Samples
  • On-Board Voltage Reference
  • Proven PCB Layout
  • Fully Assembled and Tested

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The MAX1624 evaluation kit (EV kit) provides a digitally programmable output voltage between 1.1V and 3.5V from a 5V input supply. It delivers up to 11.5A output current with greater than 90% efficiency. The MAX1624 EV kit features 1% output accuracy. The MAX1624 features a resistor-programmable switching frequency from 100kHz to 1MHz, as well as current-mode operation for superior load- and line-transient response. This EV kit is a fully assembled and tested circuit board. For a low-cost version of this kit that includes the Intel® VRM connector and aluminum-electrolytic filter capacitors, order the MAX1624VRMEVKIT.
Возможности:

  • 4.5V to 5.5V Input Voltage Range
  • 1.1V to 3.5V Output Voltage
  • 11.5A Output Current
  • Efficiency = 90%, VIN = 5V, VOUT = 2.5V @ IOUT = 10A
  • Selectable 0.5%, 1%, 2% AC Load Regulation
  • Power-OK Output
  • Glitch-Catcher™ Provides Excellent Load-Transient Response
  • 500kHz Switching Frequency
  • 24-Pin SSOP Package
  • Low-Profile Components

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The MAX1626 evaluation kit (EV kit) provides a selectable 3.3V or 5V output voltage. The MAX1626 has a high-switch duty cycle of up to 100%, allowing the external P-channel transistor to turn on fully. The 100% duty cycle and a low 100mV current-sense level permit very low dropout voltages. The circuit is configured to deliver up to 2A of output current with greater than 90% conversion efficiency.

This EV kit is a fully assembled and tested surface-mount circuit board. It can also be used to evaluate the MAX1627, which has an adjustable output voltage. Additional pads on the bottom of the board accommodate the external feedback resistors for setting different output voltages.
Возможности:

  • Selectable 3.3V or 5V Output Voltage
  • Low Dropout Voltage
  • 100% Max Duty Cycle
  • 2A Output Current
  • 16.5V Max Input Voltage
  • 1µA Max Shutdown Current
  • 90µA Max IC Supply Current
  • Up to 300kHz Switching Frequency
  • 8-Pin SO, Surface-Mount Construction
  • Fully Assembled and Tested

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Описание:
The MAX1630/MAX1631/MAX1632 evaluation kits (EV kits) each consist of one of three preassembled and tested evaluation boards (EV boards) that embody the standard application circuits. The MAX1630 and MAX1632 EV boards provide the triple-output 3.3V/5V/12V circuit, and the MAX1631 EV board provides the dual-output 3.3V/5V circuit.

All three use the same PC board but have different components to accommodate different input voltage ranges. The main differences between the MAX1630 and MAX1632 EV boards are in the turns ratio (1:4 or 1:2.2) and in the location of the transformer connection (3.3V side or 5V side). Connecting the transformer to the 3.3V side allows lower input voltage. Connecting the transformer to the 5V side provides slightly better efficiency and lower stress voltages.

These circuits are configured to deliver up to 3A of output current on each of the main PWM outputs with greater than 90% efficiency. The MAX1630/MAX1631/MAX1632 EV kits can also be used to evaluate other output voltages.
Возможности:

  • Battery Range:
    • 5.2V to 20V (MAX1630)
    • 5.2V to 28V (MAX1631)
    • 6.5V to 28V (MAX1632)
  • Outputs:
    • 3.3V at 3A
    • 12V at 120mA
    • 5V at 3A
    • 5V at 30mA Keep-Alive
  • 1:4 Transformer (MAX1630)
    1:2.2 Transformer (MAX1632)
  • Adjustable 2.5V to 5.5V Outputs (optional resistor divider)
  • Precision 2.5V Reference Output
  • Oscillator Sync Input
  • Low-Noise Mode Control Input (active-low SKIP)
  • Power-Good Monitor (active-low RESET output)
  • Fully Assembled and Tested

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The MAX1638VRM evaluation kit (EV kit) provides a digitally programmable output voltage between 1.3V and 3.5V from a 5V input supply. It delivers up to 14A output current with greater than 90% efficiency. The MAX1638 features 1% output accuracy as well as 1% AC-load regulation. The EV kit operates at a 600kHz switching frequency and has excellent dynamic response to correct for fast output transients.

A separate test-fixture PC board emulates a system motherboard and contains a 22µF ceramic capacitor that models the local CPU bypass capacitors. The test fixture also puts the GlitchCatcher™ mosfets on the correct side of the VRM connector, in order to reduce stray inductance.
Возможности:

  • 4.5V to 5.5V Input Voltage Range
  • 1.3V to 3.5V Output Voltage Range
  • 14A Output Current Capability
  • 1% AC-Load Regulation
  • Power-Good Output
  • 600kHz Switching Frequency
  • GlitchCatcher Provides Excellent Load-Transient Response (MAX1638VRM test fixture)
  • 24-Pin SSOP Package
  • Fully Assembled and Tested

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Описание:
The MAX1640 evaluation kit (EV kit) is an adjustable switch-mode current source that operates from a 5.5V to 26V input. It is intended for microprocessor-controlled battery chargers. The charging current, maximum voltage, and pulse-trickle charge are programmed with external resistors. The EV kit is shipped configured for a maximum charge voltage (6 cells). It is configured as a step-down pulse-width modulator (PWM) with synchronous rectification, allowing fast-charge currents up to 1.5A with greater than 90% efficiency. The MAX1640 uses high-side current sense; this allows the load to connect directly to ground, eliminating ground potential errors. The MAX1641 uses low-side current sense.

The MAX1640 EV kit is a fully assembled and tested surface-mount printed circuit board. It can also be used to evaluate the MAX1641.
Возможности:

  • 5.5V to 26V Input Voltage Range
  • Tight Current-Regulation Accuracy:
    • 2% (MAX1641)
    • 5% (MAX1640)
  • Up to 1.5A Fast-Charge Current
  • Up to 500kHz PWM Operation
  • Pulse-Trickle Charge Current
  • 100% Maximum Duty Cycle (low dropout)
  • Synchronous Rectifier
  • Surface-Mount Components
  • Fully Assembled and Tested

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Описание:
The MAX1649 evaluation kit (EV kit) provides a regulated 5V output voltage from a 5.5V to 16.5V source. The circuit is configured to deliver up to 1.5A of output current using all surface-mount components. The MAX1649's low quiescent current and unique current-limited PFM control scheme provide high efficiency over a wide range of load currents.

The MAX1649 EV kit can also be used to evaluate the MAX1651 (3.3V output), MAX649, MAX651, and MAX652. However, the MAX1649/MAX1651 are improved versions of the MAX649/MAX651, and are recommended for new designs.
Возможности:

  • +5.5V to +16.5V Input Supply Range
  • Over 90% Efficiency for 10mA to 1.5A Loads
  • 100µA (max) Quiescent Supply Current
  • Fixed 5V or Optional Adjustable Output Voltage
  • 1.5A Output Current Capability
  • Fully Assembled and Tested

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The MAX1653 evaluation kit (EV kit) provides a +3.3V output voltage from a +4.5V to +28V input. It delivers up to 2A output current with greater than 95% efficiency, operates at 300kHz switching frequency, and has superior line- and load-transient response.

This EV kit can be used to evaluate other output voltages in the +2.5V to +5.5V range by changing feedback resistors R2 and R3. It can also be used to evaluate the MAX1655, which has a +1.0V to +5.5V output voltage range.
Возможности:

  • +4.5V to +28V Input Voltage Range
  • Selectable +3.3V or +5V Output Voltage
  • +2.5V to +5.5V Adjustable Output (MAX1653)
  • +1.0V to +5.5V Adjustable Output (MAX1655)
  • 2A Output Current
  • 3µA IC Shutdown Current
  • 300kHz Switching Frequency
  • Surface-Mount Construction
  • Fully Assembled and Tested

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The MAX1672 evaluation kit (EV kit) integrates a step-up switching converter with a linear-regulator output to provide step-up/down voltage conversion. It accepts a 1.8V to 11V input and converts it to a 3.3V or 5V output for currents up to 300mA. The EV kit is optimized for battery applications where the input varies above and below the regulated output voltage. It provides ultra-low quiescent current and high efficiency for maximum battery life. Another benefit of the low-dropout linear post-regulator is that it reduces high-frequency ripple.

The MAX1672 EV kit is a fully assembled and tested surface-mount circuit board. With minimal modification, it can also be used to evaluate other output voltages. Additional pads on the board accommodate external feedback resistors for setting different output voltages.
Возможности:

  • Step-Up/Down Voltage Conversion
  • 1.8V to 11V Input Range
  • 3.3V or 5V Selectable Output Voltage
  • Adjustable Output Voltage (1.25V to 5.5V)
  • Load Disconnects from Input in Shutdown
  • Up to 300mA Output Current
  • No External FETs Required
  • 0.1µA Typical IC Shutdown Current
  • Low-Battery Comparator
  • 16-Pin QSOP Package (same footprint as 8-pin SO)
  • Surface-Mount Components
  • Fully Assembled and Tested

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Описание:
The MAX1676 is a high-efficiency, step-up DC-DC converter for portable hand-held devices. It accepts a positive input voltage between 0.7V to 5.5V and converts it to a higher output voltage. The MAX1676 includes a damping circuit (at BATT) that suppresses inductor ringing to reduce electromagnetic interference (EMI).

The MAX1676 evaluation kit (EV kit) is a fully assembled and tested surface-mount printed circuit board. Three jumpers on the EV kit allow for easy access to the output voltage select, current limit, and shutdown features.

The output voltage is both adjustable and pin-selectable. A movable jumper selects either a 3.3V or 5.0V output, or it can be left open and a resistor network can be used to obtain a voltage in the 2V to 5.5V range. The inductor current limit is selectable for either 0.5A or 1.0A. In shutdown mode, the MAX1676 typically draws only 0.1µA.
Возможности:

  • Synchronous Rectification for Improved Efficiency
  • Operates Down to 0.7V Input Supply Voltage
  • No External Schottky Diode Required (for multicell applications)
  • Selectable Current Limit (0.5A or 1.0A)
  • Damping Circuit Reduces EMI
  • 16µA Quiescent Current
  • 0.1µA Typical Shutdown Current
  • Low-Battery Detector (LBI/LBO)
  • 10-Pin µMAX® Package
  • Surface-Mount Construction
  • Fully Assembled and Tested

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The MAX1685 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains a pulse-width-modulated (PWM), step-down DC-DC converter. The EV kit provides a +3.33V output voltage from a +3.5V to +14V input source. It delivers up to 1A output current. The MAX1685 features internal MOSFET switches, low dropout voltage (100% duty-cycle operation), and an accurate +1.25V reference.

The MAX1685 EV kit provides low quiescent current, synchronous rectification, and high efficiency (up to 95%) for maximum battery life. Operation at 600kHz allows the use of a tiny surface-mount inductor.

The MAX1685 EV kit can also be used to evaluate the MAX1684, which operates at 300kHz and has slightly higher efficiency than the MAX1685.
Возможности:

  • +3.5V to +14V Input Voltage Range
  • Fixed or Adjustable Output Voltage
    • +3.33V (Fixed)
    • +1.25V to VIN (Adjustable)
  • Guaranteed 1A Output Current
  • 100% Duty Cycle in Dropout
  • 600kHz Fixed-Frequency PWM Operation
  • Internal MOSFET Switch and Synchronous Rectifier
  • 2µA IC Shutdown Current
  • Surface-Mount Components
  • Fully Assembled and Tested

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Описание:
The MAX1703 evaluation kit (EV kit) provides a regulated 5.0V output while operating on input voltages as low as 1.2V. The input may be a DC source or a 1 to 3-cell battery. Efficiency is up to 95%, and output loads are up to 1A.

The kit, which uses surface-mount components, is fully assembled and tested for quick evaluation. Jumpers are provided to select the output voltage, switching mode, and shutdown control.
Возможности:

  • 5.0V Output
  • 1A Output Current
  • 1.2V to 5.5V Input
  • Up to 95% Efficiency
  • 0.1µA Shutdown Current
  • 300kHz PWM Operation
  • Optional Low-Power Mode
  • Small Surface-Mount Components

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The MAX1705 evaluation kit (EV kit) is a step-up switching regulator for battery-powered systems operating from 1 to 3 NiCd/NiMH cells or 1 Li-Ion cell. The EV kit accepts a +0.9V to +4.5V input and converts it to a 4.5V step-up output and a 3.3V linear-regulator output. It provides low quiescent current, high-efficiency pulse-frequency-modulation operation for maximum battery life, and a high-power, fixed-frequency pulse-width-modulation mode. The MAX1705 features a built-in, low-dropout linear post-regulator that reduces high-frequency ripple.

The MAX1705 EV kit is a fully assembled and tested surface-mount circuit board. It can also be used to evaluate the MAX1706.
Возможности:

  • +0.9V to +4.5V Input Range
  • High-Power Output: 4.5V or Adjustable
  • Dual Outputs: Step-up and Linear Regulator
  • 200mA Max Linear-Regulator Output Current
  • Optional Track Mode for Highest Efficiency
  • Low-Noise, 3.3V or Adjustable Output Voltage
  • High-Efficiency Step-up Converter: up to 96%
  • Up to 850mA Total Output Current
  • Internal 300kHz Oscillator
  • Internal MOSFET and Synchronous Rectifier
  • 1µA Shutdown Current
  • Power-Good Output
  • Surface-Mount Components
  • Fully Assembled and Tested

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Описание:
The MAX1715 evaluation kit (EV kit) demonstrates the MAX1715's standard 4A application circuit. This DC-DC converter steps down high-voltage batteries and/or AC adapters, generating precision, low-voltage rails for use as chipset, DRAM supplies, and low-voltage supplies.

The MAX1715 EV kit provides dual 1.8V and 2.5V output voltages from a 5V to 24V battery input range. It delivers up to 4A output current for each output with greater than 90% efficiency, operating at 255/345kHz switching frequency, and has superior line- and load-transient response.

This EV kit is a fully assembled and tested circuit board. It also allows the evaluation of other output voltages in the 1.0V to 5.5V range by changing feedback resistors R1-R4.
Возможности:

  • +5V to +24V Input Voltage Range
  • Preset 1.8V and 2.5V Output Voltages
  • 1.0V to 5.5V Adjustable Outputs
  • 4A Output Current
  • 255/345kHz Switching Frequency
  • No Current-Sense Resistor
  • Power-Good Output
  • 28-Pin QSOP Package
  • Low-Profile Components
  • Fully Assembled and Tested

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Описание:
The MAX1724 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains two separate boost switching-regulator circuits. The left-side circuit contains a MAX1724 with a preset 3.3V output. Other preset voltages of 2.7V, 3.0V, or 5.0V are also available. The right-side circuit contains a MAX1722, which has an adjustable output voltage. This circuit's output is set for 3.6V. All devices regulate with input voltages from 0.91V to VOUT, making them ideal for 1- or 2-cell alkaline and NiMH battery applications.

The right-side circuit may also be used to evaluate the MAX1723, which features a shutdown (active-low SHDN) mode. The MAX1722/MAX1724 has a BATT pin, which lowers the guaranteed startup voltage from 1.2V to 0.91V.

The MAX1722/MAX1723/MAX1724 feature synchronous rectification and ultra-low (1.5µA typ) quiescent current for maximum efficiency and long battery life. Operation up to 200kHz allows tiny surface-mount components.
Возможности:

  • 0.91V to VOUT Input Voltage Range
  • Two Complete Boost Circuits
    • 3.3V Fixed (MAX1724)
    • 3.6V Adjustable Output (MAX1722)
  • Up to 50mA Output from a 1-Cell Input
    • Up to 100mA Output from a 2-Cell Input
  • 1.5µA Quiescent Current from VOUT
  • Up to 90% Efficiency with Synchronous Rectification
  • Switching Frequency Up to 200kHz
  • All Surface-Mount Design
  • Fully Assembled and Tested Board

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The MAX1771 evaluation kit (EV kit) provides a regulated 12V, or adjustable output voltage from an input source as low as 3V. It drives loads up to 0.5A with greater than 80% conversion efficiency.

This EV kit is a fully assembled and tested surface-mount circuit board. Additional pads on the bottom of the board accommodate the external feedback resistors for setting different output voltages.
Возможности:

  • 12V or Adjustable Output Voltage
  • 3V to VOUT + 0.5V Input Range
  • Up to 0.5A Output Current
  • 5µA Max Shutdown Current
  • 110µA Max Supply Current
  • 300kHz Switching Frequency
  • 8-Pin SO, Surface-Mount Construction
  • Fully Assembled and Tested

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Описание:
The MAX1797 evaluation kit (EV kit) is a high-efficiency, step-up DC-DC converter for portable hand-held devices. Unlike typical boost circuits, the MAX1797 output is completely disconnected from the input in shutdown. The EV kit accepts a positive input voltage between 0.7V and VOUT and converts it to a 3.3V output for currents up to 500mA. The EV kit provides ultra-low quiescent current and high efficiency for maximum battery life.

The MAX1797 EV kit is a fully assembled and tested surface-mount printed circuit (PC) board. It can also be used to evaluate other output voltages in the 2V to 5.5V range. Additional pads on the board accommodate the external feedback resistors for setting different output voltages.
Возможности:

  • Output Disconnects from Input During Shutdown
  • Operates Down to 0.7V Input Supply Voltage
  • Adjustable Output Voltage (2V to 5.5V, External Divider)
  • Up to 500mA Output Current
  • No External Schottky Diode Required
  • Synchronous Rectification for Improved Efficiency
  • Damping Circuit Reduces EMI
  • 1µA (typ) Shutdown Current
  • Low-Battery Detector (LBI/LBO)
  • 8-Pin µMAX® Package
  • Surface-Mount Construction
  • Fully Assembled and Tested

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The MAX608 evaluation kit (EV kit) provides a regulated 5V or adjustable output voltage from an input source as low as 1.8V. It drives loads up to 0.5A with greater than 80% conversion efficiency.

This EV kit is a fully assembled and tested surface-mount circuit board. Additional pads on the bottom of the board accommodate the external feedback resistors for setting different output voltages.
Возможности:

  • 5V or Adjustable Output Voltage
  • 1.8V to VOUT + 0.4V Input Range
  • Up to 0.5A Output Current
  • 5µA Max Shutdown Current
  • 110µA Max Supply Current (MAX608 I.C. only)
  • Up to 300kHz Switching Frequency
  • 8-Pin SO, Surface-Mount Construction

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The MAX619 evaluation kit (EV kit) is a 3V to 5V charge-pump DC-DC converter capable of driving loads up to 50mA. The circuit consists of the SOIC and four surface-mount capacitors on a single-layer printed circuit board.
Возможности:

  • 2.0V to 3.6V Input Range
  • Up to 50mA Output Current
  • 1µA Shutdown Current

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Описание:
The MAX629 evaluation kit (EV kit) contains two separate switching-regulator circuits. The first circuit converts a +0.8V to VOUT battery voltage to a +24V LCD backplane bias voltage for currents up to 20mA. The second circuit converts a +0.8V to +12V battery voltage to a -20V voltage for currents up to 20mA. The MAX629 requires a +2.7V to +5.5V supply at VCC, but the inductor can be powered from as low as 0.8V. Both output voltages can be adjusted by changing the feedback-resistor values.

The MAX629 EV kit provides low quiescent current and high efficiency for maximum battery life. Operation up to 300kHz allows the use of a tiny surface-mount inductor. This EV kit is a fully assembled and tested surface-mount circuit board.
Возможности:

  • Output Voltage:
    • +24V Positive
    • -20V Negative
  • Battery Input Voltage:
    • +0.8V to VOUT (Positive Output)
    • +0.8V to +15V (Negative Output)
  • +2.7V to +5.5V VCC Supply Range
  • Up to 20mA Output Current
  • Internal 28V N-Channel Switch
  • 1µA (Max) IC Shutdown Current
  • Up to 300kHz Switching Frequency
  • Surface-Mount Components
  • Fully Assembled and Tested

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The MAX6470 evaluation kit (EV kit) circuit features the MAX6470 low-dropout linear regulator with an integrated microprocessor reset output signal. The circuit provides a preset 3.3V output from a 3.6V to 5.5V input range and delivers 300mA of load current. The MAX6470 EV kit is a fully assembled and tested surface-mount circuit board that accommodates the MAX6470 IC in both the 6-pin SOT23 and 8-pin QFN packages. The EV kit board can also be used to evaluate the MAX6469-MAX6476 linear regulators. For output voltages less than 3.3V, the input voltage range can go down to 2.5V.
Возможности:

  • Preset 3.3V Output
  • Adjustable Output Voltage (1.2V to 5V)
  • 300mA Output Current
  • 57mV (typ) Dropout Voltage at 150mA Output Current
  • Microprocessor active-low RESET Output Signal with Timeout Period
  • Supports 6-Pin SOT23 and 8-Pin QFN Packages
  • Fully Assembled and Tested

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The MAX662A evaluation kit (EV kit) is an assembled surface-mount board that allows easy evaluation of the MAX662A or MAX662. The EV kit schematic is the standard circuit shown in Figure 3a on page 5 of the MAX662A data sheet. A 3-pin jumper connector and a shunt are included to allow easy control of normal-operation and shutdown modes.
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The MAX747 evaluation kit (EV kit) provides a regulated 5.0V output voltage from a 6V to 15V input. It delivers a 1.25A output current and up to 95% efficiency from a 6V supply using small, surface-mount components.
Возможности:

  • 6.0V to 15.0V Input Voltage Range
  • Fixed 5V or Optional Adjustable Output Voltage
  • 1.25A Output Current Capability
  • Up to 95% Efficiency
  • PWM Architecture
  • External Shutdown Control
  • Fully Assembled and Tested

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The MAX756 evaluation kit (EV kit) is a fully assembled and tested surface-mount printed circuit board. It can also be modified to fit the adjustable-output MAX757. The MAX756/MAX757 are CMOS, step-up, DC-DC switching regulators for small, low input voltage or battery-powered systems. The MAX756 accepts a positive input voltage down to 0.7V and converts it to a higher pin-selectable output voltage of 3.3V or 5V. The MAX757 is an adjustable version that accepts an input voltage down to 0.7V and generates a higher adjustable output voltage in the 2.7V to 5.5V range. Typical full-load efficiencies for the MAX756/MAX757 are greater than 87%.

A movable jumper selects either 3.3V or 5.0V output voltage, and additional pads on the bottom of the board are provided to place resistors for the LBI/LBO low-battery detector and MAX757 output adjustment.
Возможности:

  • Operates Down to 0.7V Input Supply Voltage
  • 87% Efficiency at 200mA
  • 60µA Quiescent Current
  • 20µA Shutdown Mode with Active Reference and LBI Detector
  • 500kHz Maximum Switching Frequency
  • ±1.5% Reference Tolerance Over Temperature
  • Low-Battery Detector (LBI/LBO)
  • 8-Pin DIP and SO Packages
  • Surface-Mount Construction
  • Fully Assembled and Tested

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The MAX764 evaluation kit (EV kit) is a fully assembled and tested surface-mount printed circuit board that provides a regulated -5.0V output voltage from a 3V to 16V input voltage source. It drives loads up to 250mA with conversion efficiency greater than 82%.

The MAX764 EV kit can also be used to evaluate the MAX765CSA (-12V output) or MAX766 (-15V output). Additional pads are provided on the board's solder side to accommodate external feedback resistors for setting different output voltages.
Возможности:

  • -5V or Adjustable Output Voltage
  • Up to 250mA Output Current
  • 120µA Max Supply Current
  • 5µA Max Shutdown Current
  • 300kHz Switching Frequency
  • Internal Power MOSFET
  • 8-Pin SO Package
  • Surface-Mount Construction
  • Fully-Assembled and Tested

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The MAX796 evaluation kit (EV kit) is a preassembled and tested demonstration board that generates 5V and 15V. It features a flyback transformer rather than a simple inductor, providing the extra 15V output with very little added cost. This loosely regulated 15V output is normally post-regulated to 12V with a linear regulator such as the MAX667, in order to generate VPP programming voltages for flash memory and PCMCIA sockets. The board comes configured to accept battery voltages between 6.5V and 28V, but can be reconfigured for voltages between 5.7V and 30V by reducing the expectation on secondary load-current capability at low voltages (60mA) and substituting MOSFETs with higher breakdown voltage ratings.

The standard board is guaranteed to deliver at least 3A of load current on the main output and a 120mA minimum on the secondary output (VSEC > 13V). To modify the load-current capability, change the sense-resistor (R1) value and re-size the external components according to the Design Procedure in the MAX796/MAX797/MAX799 data sheet.

The main output voltage comes preset to 5.08V (nominal). To select 3.3V operation, move jumper J2 to position 2-3. For operation in adjustable mode, install resistors R4 & R5 and remove the jumper. There is a small PC trace jumper that shunts J2 on the board. This default jumper must be cut apart for either adjustable-mode or fixed 3.3V operation. Don't operate the circuit if a jumper or resistor divider has not been installed, as this will damage the IC due to output overvoltage. Be sure to change the transformer turns ratio if the secondary feedback resistor divider is changed.

In addition to the standard components, the EV kit has some extra pull-up and pull-down resistors (R2-R8) to set default logic input levels. These resistors can usually be omitted in the final design. There is also an optional HF noise filter on the current-sense leads (R6 and C9) that may be needed with some transformer types. If the main output becomes noisy when the secondary output is heavily loaded, the noise filter should be left installed.

The MAX796 EV kit can be used to evaluate the MAX799 IC by replacing the IC and re-wiring the transformer secondary. Changes needed include connecting the SECFB resistor divider to REF instead of GND, changing the transformer, and reversing the secondary rectifier (D3) and filter capacitor (C7) polarities.
Возможности:

  • Battery Range: 6.5V to 28V
  • Load Capability:
    • +3.3V at 3A
    • +15V at 150mA
  • Precision 2.505V Reference Output
  • Oscillator SYNC Input
  • Secondary Winding Regulation

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The MAX831 evaluation kit (EV kit) provides a regulated 5.0V output voltage while operating on input voltages from 8.0V to 30V. It drives loads up to 1A with conversion efficiency greater than 80%.

The MAX831 EV kit is a fully assembled and tested surface- mount printed circuit board. This kit comes with a 5V-output MAX831 IC, but it can also be used to evaluate the MAX833 (3.0V output), MAX832 (3.3V output), or MAX830 (adjustable output). Additional pads are provided on the board's solder side to accommodate the external feedback resistors used with the MAX830.
Возможности:

  • 8V to 30V Input Voltage Range
  • 5V Output Voltage
  • Up to 1A Continuous Output Current
  • 140µA Shutdown Supply Current
  • 8mA Quiescent Current
  • Internal Power Switch
  • Adjustable Current Limit
  • Surface-Mount Construction
  • Fully Assembled and Tested

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The MAX845 evaluation kit (EV kit) is an assembled and tested isolated 5V power supply that meets PCMCIA height requirements. Two demonstration circuits are provided: a 100mA circuit that uses an industry-standard 78L05 regulator, and a 40mA circuit that uses a low-cost zener shunt regulator. Both circuits consist of a MAX845 IC (in the µMAX® package), a low-profile transformer, a half-wave rectified voltage doubler, and a regulator.
Возможности:

  • Isolated Power Supply
  • Low Profile (for PCMCIA cards)

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The MAXFILTERBRD is an unpopulated PCB design to evaluate the MAX7408–MAX7415/MAX7418–MAX7425 5th-order, lowpass, switched-capacitor filters (SCFs).

Contact the factory for free samples of the pin-compatible MAX7408–MAX7415/MAX7418–MAX7425 SCFs to evaluate these devices.
Возможности:

  • CLK Pad for External Clock Frequency
  • Lead(Pb)-Free and RoHS Compliant
  • Proven PCB Layout

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The MAXREFDES101# is a unique evaluation and development platform in a wrist-worn wearable form factor that demonstrates the functions of a wide range of Maxim’s products for health-sensing applications. This second-generation health sensor platform (a follow-on to the MAXREFDES100#) integrates a PPG analog-front-end (AFE) sensor (MAX86141), a biopotential AFE (MAX30001), a human body temperature sensor (MAX30205), a microcontroller (MAX32630), a power-management IC (MAX20303), and a 6-axis accelerometer/gyroscope. The complete platform includes a watch enclosure and a biometric sensor hub with an embedded heart-rate algorithm (MAX32664). Algorithm output and raw data can be streamed through Bluetooth® to an Android® app or PC GUI for demonstration, evaluation, and customized development.

Design files, firmware, and software can be found under the Design Resources tab. The board is also available for purchase.

Resources

Related Links

Возможности:

  • Photoplethysmography (PPG)
  • Biopotential measurement (ECG)
  • Skin temperature
  • Embedded heart-rate algorithm
  • Motion and rotation
  • Wearable watch form factor

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Temperature is one of the most widely measured parameters in industrial process control and automation. This reference design provides a complete signal-chain solution that works with any type of RTDs, from PT100 to PT1000. The Novato PT100 2-wire, loop-powered smart temperature transmitter guarantees a low-power, easy-to-use, reliable solution of temperature measurement from -200°C to +850°C with accuracy better than 0.1% or 1.0°C, whichever is more accurate, over the entire operating range.

The Novato MAXREFDES16 smart sensor transmitter reference design features:

Документация:
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Описание:

Go-IO is an Industrial-Internet-of-Things (IIoT) reference design designed for rapid prototyping and development of configurable industrial-control systems. Typical end applications include Industry 4.0 driven process automation for building automation for intelligent buildings, smart sensors, reconfigurable industrial control systems, and robotics. All these industrial applications require a high performance, robust, configurable solution, which Go-IO provides using a modular approach. These systems are enabled by highly integrated ICs from Maxim Integrated, delivering new levels of performance while delivering lower power dissipation in tiny footprints.

Go-IO has four different boards. The different configurations provide a varying mix of type of I/O channels and communication interfaces to target different end applications.

Design files, firmware, and software can be found on the Design Resources tab. The boards are also available for purchase.

Возможности:

  • 8 Channels Isolated Digital Input
  • 4 Channels Isolated 1.2A Digital Output with Safe/Fast Demag
  • 4-Port IO-Link® Master version 1.1 compliant with TMG IO-Link Master Stack
  • 1 Isolated Power and RS-485 COM port, full duplex to 25Mbps data rate

Документация:
  • Схемотехника
  • BOM
  • Топология платы
Описание:

The Alameda (MAXREFDES24#) reference design features a scalable solution for multi-channel analog output modules. The configurable 4-channel design generates all typical bipolar current and voltage output ranges up to 24mA/12V with less than ±0.1% typical total unadjusted error (TUE). Integrated detection of power and cable faults provides the user with the necessary diagnostics for robust industrial control applications.

A buffered MAX5134 four-channel, 16-bit digital-to-analog converter (DAC) generates the low voltage signals that drive the inputs of four MAX15500 signal conditioners (output drivers). Both devices communicate with the host over an isolated SPI bus and can be daisy chained together for designs requiring higher channel counts. A MAX6126 produces a precision voltage reference to the circuit for maximum performance over environmental conditions. The design also incorporates an isolated power supply circuit with a wide DC input range using a MAX17498B peak current-mode flyback controller.

The board is designed in a compact pluggable form factor for easy evaluation with a PC (using the MAXREFDES24EVSYS design accelerator kit) or for development using a LX9 or ZedBoard Xilinx based platform. Refer to the Details tab for more information and performance data. Design files and firmware can be downloaded from the Design Resources tab.

Возможности:

  • Programmable high-accuracy current/voltage output
  • Current output drives up to 1kО©
  • Voltage output drives loads down to 1kО©
  • Extensive error reporting
  • Isolated power and data
  • Device drivers
  • Example C source code
  • Pmodв„ў-compatible form factor

Документация:
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  • BOM
  • Топология платы
Описание:

The MAXREFDES67# reference design is a complete universal analog input for industrial applications. This unique 24-bit front-end accepts bipolar voltage and current, resistance temperature detector (RTD) and thermocouple (TC) inputs. Built in Maxim Integrated’s ultra-small Micro PLC form factor, the MAXREFDES67# performs with a effective resolution up to 22.3 bits with temperature error as low as ±0.1% across a range of -40°C to 150°C.

To enhance ease of use, the innovative system architecture switches all signals on board, meaning that the connector requires no jumpers or additional connections, regardless of the type of connection. In addition, the system features Maxim Integrated’s Beyond-the-Rails feature in all signal-chain elements. Beyond the Rails reduces the need for large power supplies, allowing each element to accept large input voltages while running from a low-voltage power rail.

The board features a micro USB connector for quick connection to a PC for evaluation. In addition, the board requires a 24V power supply, from a power supply or from the included AC/DC wall adapter. Refer to the Details tab for more information and performance data. Design files and firmware can be downloaded from the Design Resources tab.

Возможности:

  • High accuracy
  • -10V to +10V В±20% voltage inputs
  • -20mA to +20mA В±20% current inputs
  • RTD and TC tested temperature range (-40В°C to +150В°C)
  • Software-controlled input type
  • 24V input protection
  • Isolated power and data
  • Board and sensor calibration
  • Micro PLC form factor
  • Device drivers
  • Example C source code
  • Test data

Документация:
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Описание:

The MPOS-STD2 reference design is a PCI-PTS MPOS-in-a-box terminal that comes with a complete set of hardware, software, and documentation including schematics, PCB layout, 2D and 3D design files, reports from security labs.

More info ›

Описание:

Бюджетный LED-драйвер способен генерировать стабилизированный выходной ток 350 мА для цепи последовательно подключённых светодиодов при выходном напряжении до 30 В. Он может работать от входного напряжения с широким диапазоном и выдерживать скачки входного напряжения с амплитудой до 30 В, благодаря чему он подходит для применения в автомобильной технике. Данный проект имеет функцию защиты от разрыва цепи светодиодов.

Данный базовый проект имеет характер аппаратного решения.

Возможности:


Возможность заказа
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Документация:
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  • BOM
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Описание:
Maxim's line of supervisory circuits offers multiple wafer trimmable options, leading to thousands of variations. The large number of variations makes it difficult to offer samples for each unique version. The Supervisory Circuit Evaluation Kit (SUPEVKIT) has been developed to emulate all the different variations of the MAX63XX line. It reproduces the logic of this line but not the electrical characteristics. Any device in these product families can be emulated simply by changing jumper settings and using a capacitor, if required.

The SUPEVKIT supports the following MAX63XX devices:

MAX6305 MAX6315 MAX6322HP
MAX6306 MAX6316L MAX6326
MAX6307 MAX6316M MAX6327
MAX6308 MAX6317H MAX6328
MAX6309 MAX6318LH MAX6332*
MAX6312 MAX6319MH MAX6335*
MAX6313 MAX6320P MAX6336*
MAX6314 MAX6321HP MAX6337*
MAX6310 MAX6318MH MAX6333*
MAX6311 MAX6319LH MAX6334*

Возможности:

  • Easy to Configure
  • Five Reset Outputs
    • Bidirectional ative-low RESET
    • Open-Drain active-low RESET
    • Push/Pull active-low RESET
    • Push/Pull active-low RESET
    • Open-Drain active-low RESET
  • Adjustable Reset Timeout
  • Manual Reset Input
  • Adjustable Under/Overvoltage Supply Monitoring
  • Adjustable Watchdog Timeout
  • Reset Valid Down to VCC = 1V
  • Immune to Short Negative-Going VCC Transients
  • Assembled and Tested

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*Информация о ценах и сроках поставки носит информационный характер. Офертой является только выставленный счет.

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