MCP1603 - Microchip Technology

MCP1603 500 mA Synchronous Buck Regulator

The MCP1603 is a high efficient, fully integrated 500 mA synchronous buck regulator whose 2.7V to 5.5V input voltage range makes it ideally suited for applications powered from 1-cell Li-Ion or 2-cell/3-cell NiMH/NiCd batteries. At heavy loads, the MCP1603 operates in the 2.0 MHz fixed frequency PWM mode which provides a low noise, low output ripple, small-s.

Features

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• Over 90% Typical Efficiency Output Current Up To 500 mA Low Quiescent Current = 45 µA, typical Low Shutdown Current = 0.1 µA, typical Adjustable Output Voltage: - 0.8V to 4.5V Fixed Output Voltage: - 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V 2.0 MHz Fixed-Frequency PWM (Heavy Load) Automatic PWM to PFM Mode Transition 100% Duty Cycle Operation Internally Compensated Undervoltage Lockout (UVLO) Overtemperature Protection Space Saving Packages: - 5-Lead TSOT - 8-Lead 2X3 DFN General Description The MCP1603 is a high efficient, fully integrated 500 mA synchronous buck regulator .