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
