产品技术规格

• Dev Kit Description

  This evaluation board uses the MCP1640 in a high-efficiency (up to 96%), fixed frequency (500 kHz), step-up DC-DC converter. It demonstrates Easy-to-use and minimum number of external components power supply solution for applications powered by one-cell, two-cell, or three-cell alkaline, NiCd/NiMH; one-cell Li-Ion or Li-Polymer batteries,Selection of the best operating mode for efficiency (PWM/PFM),A wide input voltage range (0.35 to 5.5V) and low start-up voltage (0.65V)

• Dev Kit Features

  -Input voltage range, VIN: 0.35V to 5.5V, with VIN ≤ VOUT; 1mA load after start-up

  -Fixed output voltage: 2.0V or 3.3V and 3.3V or 5.0V, selected using a mini dip switch on board

  -Output current: typical 100mA @ 3.3V Output, 1.2V Input or 350mA @ 5.0V Output, 3.3V Input

  -Start-up voltage: 0.65V at VIN = 1.2V, VOUT = 3.3V and IOUT = 1mA, resistive load

  -Automatic PFM/PWM Operation

  -PWM Switching Frequency = 500 kHz

  -Enable state selectable using mini-dip switch on board

  -Peak Input Current Limit up to 800mA

  -Over-temperature (if the die temperature exceeds 150°C, 10°C hysteresis)

  -For standby applications operates and consumes only 19μA while operating at no load and provides a true disconnect from input to output while shutdown

• Kit Includes

  -One MCP1640 Synchronous Boost Converter Evaluation Board

• Dev Kit Additional Information

  Data Sheet:

  http://ww1.microchip.com/downloads/en/DeviceDoc/22234B.pdf

  User Guide:

  http://ww1.microchip.com/downloads/en/DeviceDoc/51880a.pdf