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Применения > > MCP1640 Single Quad-A Battery Boost Converter Reference Design

MCP1640 Single Quad-A Battery Boost Converter Reference Design (MCP1640RD-4ABC)

The MCP1640 Single Quadruple-A Battery Boost Converter Reference Design demonstrates how the MCP1640 device, with the True Output Disconnect Shutdown option, works attached to a microcontroller application. This board demonstrates how to optimize battery life using the MCP1640, and an 8-bit low cost PIC microcontroller, to reduce the No Load Input Current for applications that operate in Standby mode for a long period of time. During Standby, the enable signal for the MCP1640 has a low frequency, with less than 1% positive duty cycle. This maintains the output of the MCP1640 device up to 2.3V, which is sufficient to keep the PIC microcontroller live. This solution reduces up to 80% of the No Load Input Current the MCP1640 consumes in PFM Mode.

Возможности

    • Input voltage: one AAAA Alkaline battery
    • Output voltage: 3.3V
    • Output current: < 130 mA
    • Up to 75% efficiency
    • Standby battery current: 14.5 μA @ 1.5V input
    • Start-up voltage: 0.65V at VIN = 1.2V, VOUT = 3.3V and IOUT = 1 mA, resistive load
    • Automatic PFM/PWM operation
    • PWM Switching Frequency = 500 kHz
    • ON/OFF switch button, with 25 seconds ON
    • LED status indication (Output ON and Low Battery)
    • Energizer® Battery Holder with reverse battery protection

Файлы

Тесты и симуляция

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MCP1640 Single Quad-A Battery Boost Converter Reference Design MCP1640RD-4ABC

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