GENERAL DESCRIPTION

The TCM680 is a dual charge pump voltage converter that develops output voltages of +2VIN and – 2VIN from a single input voltage of +2.0V to +5.5V. Common applications include ±10V from a single +5V logic supply, and ±6V from a +3V lithium battery.

FEATURES

■ 99 Voltage Conversion Efficiency

■ 85 Power Conversion Efficiency

■ Wide Voltage Range .........................+2.0V to +5.5V

■ Only 4 External Capacitors Required

■ Space Saving 8-Pin SOIC Design

APPLICATIONS

■ ±10V From +5V Logic Supply

■ ±6V From a 3V Lithium Cell

■ Handheld Instruments

■ Portable Cellular Phones

■ LCD Display Bias Generator

■ Panel Meters

■ Operational Amplifier Power Supplies