Features

• MCP1642 Synchronous Boost Converter. The MCP1642 family of devices from Microchip are compact, high-efficiency, fixed-frequency, synchronous step-up DC-DC converters. These regulators are designed for applications powered by alkaline, NiCd, NiMH, Li-Ion or Li-Polymer batteries. Features. Up to 96% Typical Efficiency 1.8A Typical Peak Input Current Limit I OUT > 175 mA @ 1.2V V IN , 3.3V V OUT I OUT > 600 mA @ 2.4V V IN , 3.3V V OUT I OUT > 800 mA @ 3.3V V IN , 5.0V V OUT I OUT > 1A @ V IN > 3.6V, 5.0V V OUT Low Start-up Voltage: 0.65V Minimum Operating Input Voltage: 0.35V Maximum Input Voltage < V OUT < 5.5V Adjustable Output Voltage Range: 1.8V to 5.5V PWM Operation at 1 MHz Shutdown Current (All States): < 1 μA Internal Synchronous Rectifier Internal Compensation Inrush Current Limiting and Internal Soft-Start True Load Disconnect Shutdown (MCP1642B) Input-to-Output Bypass Option (MCP1642D) Low Noise, Anti-Ringing Control Over-temperature Protection