The MCP1601 is a synchronous Buck (step-down) switching regulator that can continuously supply 500mA of load current. This DC/DC converter can provide output voltages of 0.9V to Vin with an operating efficiency that can exceed 92%. Although ideally suited for a single Li-Ion, or 2 to 3 cell NiCd, NiMH, or alkaline battery operation, the input range of 2.7V to 5.5V is also useful for converting bus voltages to standard system requirements.
Parameter Name Value
Device Description Synchronous Buck Regulator
SW Reg Output Adjustable
Typical Active Supply (µA) 119
Switching Frequency (kHz) 750
Output Current (mA) 500
Output Voltage (V) 0.9 to Vin
Input Voltage Range (V) 2.7 to 5.5
Features
3 operating modes (PWM, PFM, LDO) with automatic switching between modes Shutdown mode to minimize current drain during stand-bye conditions Oscillator Synchronization to 1.0MHz PWM mode Integrated Buck and Synchronous switches Complete ceramic capacitor solution Integrated UVLO, Soft-start, and Over temperature protection Short circuit protection -40°C to +85°C operation
