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MAX878 Datasheet Step-up/step-down DC-dc Converters

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-0204; Rev 1; 5/94 NUAL KIT MA ATION U EET L H A S V A E T WS DA FOLLO 5V/3.

General Description

The MAX877/MAX878/MAX879 are pulse-skipping, stepup/step-down DC-DC converters that provide a regulated output from inputs both above and below the output.

They require only three external ponents—an inductor (typically 22µH) and two filter capacitors.

The MAX877 delivers a regulated 5V output from 2.5V to 6.2V inputs.

Key Features

  • o Regulates from Inputs Above & Below the Output o 1V to 6.2V Supply-Voltage Range o Internal 1A Active Rectifier with Input-to-Output Disconnect in Shutdown o Up to 210mA Load Currents, Guaranteed o 85% Efficiency o Only 3 External Components o Adjustable Current Limit o 195µA Quiescent Supply Current o 20µA Shutdown Supply Current o 3V/3.3V/5V and Adjustable Output Voltage Versions o Available in 8-Pin DIP and SO Packages _______________General.

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