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 (17ΩTypical)
■ 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