TCM828ECT713

GENERAL DESCRIPTION
The TCM828/829 are CMOS “charge-pump” voltageconverters in ultra-small  5-Pin SOT-23A packages. 
Theyinvert and/or double an input voltage which can range from+1.5V to +5.5V.  Conversion efficiency is typically >95%.Switching frequency is 12kHz for the TCM828 and 35kHz forthe TCM829.External component requirement is only two capacitors(3.3µF nominal) for standard voltage inverter applications.
With a few additional components a positive doubler canalso be built. 
All other circuitry, including control, oscillator,power MOSFETs are integrated on-chip.
Supply currentis 50µA (TCM828) and 115µA (TCM829).
The TCM828 and TCM829 are available in a 5-PinSOT-23A surface mount package.

FEATURES
■Charge Pump in 5-Pin SOT-23A Package
■>95% Voltage Conversion Efficiency
■Voltage Inversion and/or Doubling
■Low 50µA (TCM828) Quiescent Current
■Operates from +1.5V to +5.5V
■Up to 25mA Output Current
■Only Two External Capacitors Required

APPLICATIONS
■LCD Panel Bias
■Cellular Phones
■Pagers
■PDAs, Portable Dataloggers
■Battery-Powered Devices

Documents:
datasheet