General Description

The TC2682/TC2683/TC2684 are CMOS charge pump converters that provide an inverted doubled output from a single positive supply. An on-board oscillator provides the clock and only three external capacitors are required for full circuit implementation. Switching frequencies are 12kHz for the TC2682, 35kHz for the TC2683, and 125kHz for the TC2684.

Features

• Small 8-Pin MSOP Package

• Operates from 1.8V to 5.5V

• 120 Ohms (typ) Output Resistance

• 99 Voltage Conversion Efficiency

• Only 3 External Capacitors Required

• Power-Saving Shutdown Mode

• Low Active Supply Current

- 95μA (typ) for TC2682

- 225μA (typ) for TC2683

- 700μA (typ) for TC2684

Applications

• LCD Panel Bias

• Cellular Phones PA Bias

• Pagers

• PDAs, Portable Data Loggers

• Battery-Powered Devices