Description

The TCM828/TCM829 devices are CMOS “charge-pump” voltage converters in ultra-small, 5-Pin SOT-23 packages. They invert and/or double an input voltage which can range from +1.5V to +5.5V. Conversion efficiency is typically >95. Switching frequency is 12 kHz for the TCM828, and 35 kHz for the TCM829.

Features

• Charge Pump in 5-Pin SOT-23 Package

• >95 Voltage Conversion Efficiency

• Voltage Inversion and/or Doubling

• Low 50 µA (TCM828) Quiescent Current

• Operates from +1.5V to +5.5V

• Up to 25 mA Output Current

• Only Two External Capacitors Required

Applications

• LCD Panel Bias

• Cellular Phones

• Pagers

• PDAs, Portable Dataloggers

• Battery-Powered Devices