MCP1640EV-SBC Datasheet PDF - Microchip

●The MCP1640EV-SBC is a synchronous boost converter evaluation board used to evaluate and demonstrate MCP1640 products. This board demonstrates the MCP1640 is a compact, high efficiency, fixed frequency, synchronous step up dc to dc converter. It provides an easy to use 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 in addition to distributed 3.3V to 5.0V applications. It can be used to evaluate both package options (SOT23-6 and 2x3-8 DFN). This board was developed to help engineers reduce the product design cycle time. Three common output voltages can be selected 2.0V, 3.3V and 5.0V. The output voltage can be changed with a mini dip switch that changes the external resistor divider. An enable is used to enable and disable the MCP1640. When enabled, the MCP1640 will regulate the output voltage, when disabled, the MCP1640 disconnects the path from input to output for true disconnect.

● It can be powered by 1 cell, 2 cell, or 3 cell alkaline, NiCd, NiMH, Li-Polymer batteries

● For standby applications operates and consumes only 19µA

● 2.0V or 3.3V and 3.3V or 5.0V, fixed output voltage selected using a mini dip switch on board

● Output current typical 100mA at 3.3V output, 1.2V input or 300mA at 5.0V output, 3.3V input

● Automatic PFM/PWM operation

● 500KHz PWM switching frequency

● 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)

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