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Description

The MCP1612 is a 1A, 1.4 MHz, fully-integrated, current mode-controlled, synchronous buck regulator. The MCP1612 is packaged in the 8-pin MSOP and space-saving, 3x3 DFN packages. The DFN package also provides a lower thermal resistance package option for high-power, high ambient temperature applications. With an input operating range from 2.7V to 5.5V, the MCP1612 is ideal for applications that are powered by one single-cell Li-Ion, 2- to 3-cell NiMH, NiCd or alkaline sources.

Features

? Fixed Switching Frequency: 1.4 MHz

? Input Operating Voltage Range: 2.7V to 5.5V

? Integrated Buck and Synchronous Switches

? Adjustable-Output Voltage Range: 0.8V to 5.0V

? 100 Duty Cycle Capable for Low Input Voltage

? Continuous Output Current Capability: 1A

? Shutdown Control with IQ < 0.01 μA (Typ.)

? Integrated Soft-Start Feature

? Integrated Undervoltage Lockout (UVLO) Protection

? Integrated Overtemperature Protection

? Fast Dynamic Response to Line and Load Steps

? Small, 8-Pin DFN and MSOP Packages

? Operating Temperature Range: -40°C to +85°C

Applications

? Network Interface Cards

? Portable Computers

? Set-Top Boxes

? DSL Modems and Routers

? USB-Powered Devices

? GBIC Modules

? High-Speed Data System Bus Termination

? Medical Instruments

? Cellular/GSM/PHS Phones

? +5V or +3.3V Distributed Voltages