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MCP1603 - 500 mA Synchronous Buck Regulator

General Description

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.

Key Features

  • 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 Undervolta.

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www.DataSheet4U.com MCP1603 2.0 MHz, 500 mA Synchronous Buck Regulator Features • • • • • • • • • • • • • 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 whose 2.7V to 5.