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GENERAL DESCRIPTION

The TC1240 is a doubling CMOS charge-pump voltage converter in a small 6-Pin SOT-23A package. TC1240 doubles an input voltage which can range from +2.5V to +4.0V. Conversion efficiency is typically >99. Internal oscillator frequency is 160kHz for the TC1240. The TC1240 has an active high shutdown which limits the current consumption of the device to less than 1μA.

FEATURES

■ Space Saving 6-Pin SOT-23A Package

■ >99 Typical Voltage Conversion Efficiency

■ Voltage Doubling

■ Operates from +2.5V to +4.0V

■ Low Output Resistance (17?Typical)

■ Only Two External Capacitors Required

■ Consumes 180μA (Typical) in Active Mode

■ Power-Saving Shutdown Mode (1μA Maximum)

■ Fully Compliant with 1.8V Logic Sytems

APPLICATIONS

■ Cellular Phones

■ Pagers

■ PDAs, Portable Dataloggers

■ Battery-Powered Devices

■ Handheld Instruments