General Description

The ultra-small MAX870/MAX871 monolithic, CMOS charge-pump inverters accept input voltages ranging from +1.4V to +5.5V. The MAX870 operates at 125kHz, and the MAX871 operates at 500kHz. Their high efficiency (90%) and low operating current (0.7mA for the MAX870) make these devices ideal for both battery-powered and board-level voltage-conversion applications.

Features

♦ 5-Pin SOT23-5 Package

♦ 99% Voltage Conversion Efficiency

♦ Invert Input Supply Voltage

♦ 0.7mA Quiescent Current (MAX870)

♦ +1.4V to +5.5V Input Voltage Range

♦ Require Only Two Capacitors

♦ 25mA Output Current

♦ Shutdown Control

Applications

    Local -5V Supply from 5V Logic Supply

    Small LCD Panels

    Cell Phones

    Medical Instruments

    Handy-Terminals, PDAs

    Battery-Operated Equipment