General Description

The MAX5035 easy-to-use, high-efficiency, high-voltage, step-down DC-DC converter operates from an input voltage up to 76V and consumes only 270µA quiescent current at no load. This pulse-width modulated (PWM) converter operates at a fixed 125kHz switching frequency at heavy loads, and automatically switches to pulse-skipping mode to provide low quiescent current and high efficiency at light loads. The MAX5035 includes internal frequency compensation simplifying circuit implementation.

Features

♦ Wide 7.5V to 76V Input Voltage Range

♦ Fixed (3.3V, 5V, 12V) and Adjustable (1.25V to 13.2V) Versions

♦ 1A Output Current

♦ Efficiency Up to 94

♦ Internal 0.4Ω High-Side DMOS FET

♦ 270µA Quiescent Current at No Load, 10µA Shutdown Current

♦ Internal Frequency Compensation

♦ Fixed 125kHz Switching Frequency

♦ Thermal Shutdown and Short-Circuit Current Limit

♦ 8-Pin SO and PDIP Packages

Applications

    Automotive

    Consumer Electronics

    Industrial

    Distributed Power