General Description

The MAX863 dual-output DC-DC converter contains two independent step-up controllers in a single compact package. This monolithic Bi-CMOS design draws only 85µA when both controllers are on. The input range extends down to 1.5V, permitting use in organizers, translators, and other low-power hand-held products. The MAX863 provides 90% efficiency at output loads from 20mA to over 1A. This space-saving device is supplied in a 16-pin QSOP package that fits in the same area as an 8-pin SOIC.

Features

♦ Smallest Dual Step-Up Converter: 16-Pin QSOP

♦ 90% Efficiency

♦ 1.5V Start-Up Voltage

♦ 85µA Max Total Quiescent Supply Current

♦ 1µA Shutdown Mode

♦ Independent Shutdown Inputs

♦ Drives Surface-Mount, Dual N-Channel MOSFETs

♦ Low-Battery Input/Output Comparator

♦ Step-Up/Down Configurable

Applications

   2- and 3-Cell Portable Equipment

   Organizers

   Translators

   Hand-Held Instruments

   Palmtop Computers

   Personal Digital Assistants (PDAs)

   Dual Supply (Logic and LCD)