TC1240 Datasheet PDF - Microchip

●General Description

●The TC1240/TC1240A is a doubling CMOS charge pump voltage converter in a small 6-Pin SOT-23A package. The TC1240 doubles an input voltage that can range from +2.5V to +4.0V, while the TC1240A doubles an input voltage that can range from +2.5V to +5.5V. Conversion efficiency is typically >99%. Internal oscillator frequency is 160 kHz for both devices. The TC1240 and TC1240A have an active-high shutdown that limits the current consumption of the devices to less than 1 µA.

●Features

●• Charge Pumps in 6-Pin SOT-23A Package

●• >99% Typical Voltage Conversion Efficiency

●• Voltage Doubling

●• Input Voltage Range, TC1240: +2.5V to +4.0V,

●                               TC1240A: +2.5V to +5.5V

●• Low Output Resistance, TC1240: 17(Typical)

●                                  TC1240A: 12(Typical)

●• Only Two External Capacitors Required

●• Low Supply Current, TC1240: 180 µA (Typical)

●                             TC1240A: 550 µA (Typical)

●• Power-Saving Shutdown Mode (1 µA Maximum)

●• Shutdown Input Fully Compatible with 1.8V Logic Systems

●Applications

●• Cellular Phones

●• Pagers

●• PDAs, Portable Data Loggers

●• Battery Powered Devices

●• Handheld Instruments