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MAX887

Maxim
Part Number MAX887
Manufacturer Maxim
Description 100% Duty Cycle / Low-Noise / Step-Down / PWM DC-DC Converter
Published May 2, 2005
Detailed Description 19-1142 Rev 0; 9/96 ANUAL N KIT M IO T A U EVAL BLE AVAILA 100% Duty Cycle, Low-Noise, Step-Down, PWM DC-DC Converter ...
Datasheet PDF File MAX887 PDF File

MAX887
MAX887

Overview
19-1142 Rev 0; 9/96 ANUAL N KIT M IO T A U EVAL BLE AVAILA 100% Duty Cycle, Low-Noise, Step-Down, PWM DC-DC Converter ____________________________Features o 95% Efficiency o 600mA Output Current o Cycle-by-Cycle Current Limiting o Low-Dropout, 100% Duty-Cycle Operation, 300mV at 500mA o Internal 0.
6Ω (typ) MOSFET o Internal Synchronous Rectifier o High-Frequency Current-Mode PWM o External SYNC or Internal 300kHz Oscillator o Guaranteed 260kHz to 340kHz Internal Oscillator Frequency Limits o 2.
5µA Shutdown Mode _______________General Description The MAX887 high-efficiency, step-down DC-DC converter provides an adjustable output from 1.
25V to 10.
5V.
It accepts inputs from 3.
5V to 11V and delivers 600mA.
Operation to 100% duty cycle minimizes dropout voltage (300mV typ at 500mA).
Synchronous rectification reduces output rectifier losses, resulting in efficiency as high as 95%.
Fixed-frequency pulse-width modulation (PWM) reduces noise in sensitive communications applications.
Using a ...


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