TC1220 Datasheet PDF - Microchip

●General Description

●The TC1219/TC1220 are CMOS “charge-pump” voltage converters in ultra-small 6-Pin SOT-23A packages. They invert and/or double an input voltage which can range from +2.5V to +5.5V. Conversion efficiency is typically >95%. Switching frequency is 12kHz for the TC1219, 35kHz for the TC1220. When the shutdown pin is held at a logic low, the device goes into a very low power mode of operation, consuming less than 1µA of supply current.

●Features

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

●• >95% Voltage Conversion Efficiency

●• Voltage Inversion and/or Doubling

●• Operates from +2.5V to +5.5V

●• Up to 25mA Output Current

●• Only Two External Capacitors Required

●• Low Power Consumption

●• Power-Saving Shutdown Mode

●• TC1220 Compatible with 1.8V Logic Systems

●Applications

●• LCD Panel Bias

●• Cellular Phones

●• Pagers

●• PDAs, Portable Dataloggers

●• Battery-Powered Devices