Microchip Technology, Inc. Low Quiescent Current Synchronous Boost Regulator en561160

The MCP16251/2 is a compact, high-efficiency, fixed frequency, synchronous step-up DC-DC converter. This family of devices provides an easy-to-use power supply solution for applications powered by either one-cell, two-cell or three-cell alkaline, NiCd, NiMH and one-cell Li-Ion or Li-Polymer batteries. Additional Features Up to 96% Typical Efficiency 650 mA Typical Peak Input Current Limit: IOUT > 100 mA @ 1.2V VIN, 3.3V VOUT IOUT > 250 mA @ 2.4V VIN, 3.3V VOUT IOUT > 225 mA @ 3.3V VIN, 5.0V VOUT Low Start-up Voltage: 0.82V Operating Input Voltage: down to 0.35V Adjustable Output Voltage Range: 1.8V to 5.5V Maximum Input Voltage < VOUT < 5.5V Automatic PFM/PWM Operation PWM Operation at 500 kHz Low Device Quiescent Current: <4 µA typical Shutdown Current: 0.6 µA typical Internal Synchronous Rectifier Internal Compensation Inrush Current Limiting and Internal Soft-Start Input to Output Bypass Shutdown True Load Disconnect Shutdown Option (MCP16251) Anti-Ringing Control Over-temperature Protection SOT23-6 or 2x3 8-Lead TDFN packages