General Description

The MAX782 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, and dual PCMCIA VPP outputs powered by an integral flyback winding controller. Other functions include dual, lowdropout, micropower linear regulators for CMOS/RTC backup, and three precision low-battery-detection comparators.

Features

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

♦ Dual PCMCIA VPP Outputs (0V/5V/12V)

♦ Three Precision Comparators or Level Translators

♦ 95% Efficiency

♦ 420µA Quiescent Current;

   70µA in Standby (linear regulators alive)

♦ 5.5V to 30V Input Range

♦ Small SSOP Package

♦ Fixed Output Voltages Available:

   3.3 (standard)

   3.45 (High-Speed Pentium™)

   3.6 (PowerPC™)

Applications

   Notebook Computers

   Portable Data Terminals

   Communicating Computers

   Pen-Entry Systems