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