MAX8728 Evaluation Kit (MAX8728EVKIT) (MAX8728EVKIT)

The MAX8728 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that provides the voltages and features required for active-matrix thin-film transistor (TFT), liquid-crystal display (LCD) panels in LCD monitors and LCD TVs. The EV kit contains a stepdown switching regulator, a step-up switching regulator, a positive two-stage charge pump for the TFT gate-on supply, and a negative single-stage charge pump for the TFT gate-off supply. Also included is a logic-controlled, high-voltage switch with adjustable delay, and a capacitive dummy load at the gate-on supply for ease of testing.

The EV kit, as configured, provides the following outputs from a +10VDC to +13.2VDC power supply. The step-down switching regulator is configured for a +3.3V output, providing at least 2A. The step-up switching regulator is configured for a +13.5V output, providing at least 500mA. The positive charge pump is configured for a +28V output, providing at least 50mA. The negative charge pump is configured for a -6V output, providing at least 150mA. The high-voltage switch can be controlled by external logic and can be configured for a delay set by an external capacitor.

The MAX8728 switches at 1.5MHz, allowing the use of tiny surface-mount components. The EV kit can also operate at a lower frequency with component changes. The MAX8728 TQFN package (0.8mm maximum height) with low-profile external components allows this circuit to be less than 2mm high.

Возможности

  • Configured for +10V to +13.2V Input Range
  • Output Voltages
    • +3.3V Output at 2A (Step-Down Switching Regulator)
    • +13.5V Output at 500mA (Step-Up Switching Regulator)
    • +28V Output at 50mA (Positive Charge Pump)
    • -6V Output at 150mA (Negative Charge Pump)
  • Resistor-Adjustable Switching Regulator and Charge-Pump Output Voltages
  • Logic-Controlled, High-Voltage Switch with Adjustable Delay
  • Selectable 500kHz/1MHz/1.5MHz Switching Frequency
  • 180° Out-of-Phase Switching
  • Low-Profile, Surface-Mount Components
  • Fully Assembled and Tested

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Производитель: Maxim Integrated
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предложений
The MAX8728 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that provides the voltages an…
MAX8728EVKIT
-
Поиск
предложений