MAX887 Datasheet (Maxim) - 100% Duty Cycle / Low-Noise / Step-Down / PWM DC-DC Converter

MAX887, 100% Duty Cycle / Low-Noise / Step-Down / PWM DC-DC Converter

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, resu

MAX887 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 340k