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 ;sub>OUT ;/sub> > 175 mA @ 1.2V V ;sub>IN ;/sub>, 3.3V V ;sub>OUT ;/sub> I ;sub>OUT ;/sub> > 600 mA @ 2.4V V ;sub>IN ;/sub>, 3.3V V ;sub>OUT ;/sub> I ;sub>OUT ;/sub> > 800 mA @ 3.3V V ;sub>IN ;/sub>, 5.0V V ;sub>OUT ;/sub> I ;sub>OUT ;/sub> > 1A @ V ;sub>IN ;/sub> > 3.6V, 5.0V V ;sub>OUT ;/sub> Low Start-up Voltage: 0.65V Minimum Operating Input Voltage: 0.35V Maximum Input Voltage ; V ;sub>OUT ;/sub> ; 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 More information:  | | Regulator Function: | Step Up | Maximum Output Current: | 800mA | Maximum Input Voltage: | 5.5 V | Number of Outputs: | 1 | Line Regulation: | ±0.5 %/V | Load Regulation: | ±1.5 % | Mounting Type: | Surface Mount | Package Type: | MSOP | Pin Count: | 8 | Output Type: | Adjustable | Maximum Switching Frequency: | 1.15 MHz | Switching Regulator: | Yes | Efficiency: | 96% | Dimensions: | 3 x 3 x 0.95mm | Height: | 0.95mm |
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