MCP1623

MCP1623/24 Low-Voltage Input Boost Regulator for PIC® Microcontrollers Features Up to 96% Typical Efficiency 425 mA Typical Peak Input Current Limit: - IOUT > 50 mA @ 1.2V VIN, 3.3V VOUT - IOUT > 175 mA @ 2.4V VIN, 3.3V VOUT - IOUT > 175 mA @ 3.3V VIN, 5.0V VOUT Low Start-Up Voltage: 0.65V, 3.3V VOUT @ 1 mA (typical) Low Operating Input Voltage: 0.35V, typical 3.3VOUT @ 1 mA Adjustable Output Voltage Range: 2.0V to 5.5V Maximum Input Voltage  VOUT < 5.5V Automatic PFM/PWM Operation (MCP1624) PWM-Only Operation (MCP1623) PWM Operation: 500 kHz Low Device Quiescent Current: 19 µA, typical PFM Mode Internal Synchronous Rectifier Internal Compensation Inrush Current Limiting and Internal Soft Start True Load Disconnect Shutdown Current (All States): <1 µA Low Noise, Anti-Ringing Control Overtemperature Protection Available Packages: - 6-Lead SOT-23 - 8-Lead 2 x 3 DFN Applications One, Two and Three-Cell Alkaline and NiMH/NiCd Low-Power PIC® Microcontroller Applications General Description The MCP1623/24 is a compact, high-efficiency, fixed-frequency, synchronous step-up DC-DC converter. It provides an easy-to-use power supply solution for PIC® microcontroller applications powered by either single-cell, two-cell, or three-cell alkaline, NiCd, NiMH, and single-cell Li-Ion or Li-Polymer batteries. Low-voltage technology allows the regulator to start up without high inrush current or output voltage overshoot from a low 0.65V input. High effic...