General Description

The MAX786 is a system-engineered power-supply controller for notebook computers or similar battery powered equipment. It provides two high-performance step-down (buck) pulse-width modulators (PWMs) for +3.3V and +5V. Other features include dual, low-dropout, micropower linear regulators for CMOS/RTC back-up, and two precision low-batterydetection comparators.

Features

♦ Dual PWM Buck Controllers (+3.3V and +5V)

♦ Two Precision Comparators or Level Translators

♦ 95% Efficiency

♦ 420µA Quiescent Current, 70µA in Standby (linear regulators alive)

♦ 25µA Shutdown Current (+5V linear alive)

♦ 5.5V to 30V Input Range

♦ Small SSOP Package

♦ Fixed Output Voltages:

    3.3V (standard)

    3.45V (High-Speed Pentium™)

    3.6V (PowerPC™)

Applications

    Notebook Computers

    Portable Data Terminals

    Communicating Computers

    Pen-Entry Systems