Microchip Technology, Inc. 500kHz 800mA Isw Synchronous PFM/PWM Boost Regulator en547080

The MCP1640/40B/40C/40D is a compact, high-efficiency, fixed frequency, synchronous step-up DC-DC converter. It provides an easy-to-use power supply solution for applications powered by either one-cell, two-cell, or three-cell alkaline, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries. The MCP1640/40B/40C/40D provides very high efficiency through integration of the low resistance N-Channel Boost switch and synchronous P-Channel switch. Additional Features Up to 96% Typical Efficiency 800 mA Typical Peak Input Current Limit: IOUT > 100 mA @ 1.2V VIN, 3.3V VOUT IOUT > 350 mA @ 2.4V VIN, 3.3V VOUT IOUT > 350 mA @ 3.3V VIN, 5.0V VOUT Low Start-up Voltage: 0.65V Operating Input Voltage: 0.35V Adjustable Output Voltage Range: 2.0V to 5.5V Maximum Input Voltage < VOUT < 5.5V Automatic PFM/PWM Operation PWM Operation at 500 kHz Low Device Quiescent Current: 19 µA – typical PFM Mode Shutdown Current (All States): < 1 µA Internal Synchronous Rectifier Internal Compensation Inrush Current Limiting and Internal Soft-Start True Load Disconnect Shutdown Low Noise, Anti-Ringing Control Over-temperature Protection SOT23-6 or 2x3 8-Lead DFN packages