The TC828A is a CMOS “charge-pump” voltage converter in an ultra-small 5-Pin SOT-23A package. It can invert and/or double an input voltage that can range from +1.8V to +5.5V. Conversion efficiency is typically >95%, and switching frequency is 12 KHz.The external component requirement is only two capacitors (10µF nominal) for standard voltage inverter applications. With a few additional components a positive doubler can also be built. All other circuitry, including control, oscillator, power MOSFETs are integrated on-chip. Supply current is 38µA typically.The TC828A is available in a 5-Pin SOT-23A surfacemount package.FEATURES
■ Charge Pump in 5-Pin SOT-23A Package
■ >95% Voltage Conversion Efficiency
■ Voltage Inversion and/or Doubling
■ Low 38µA Quiescent Current
■ Operates from +1.8V to +5.5V
■ Up to 25mA Output Current
■ Only Two External Capacitors Required
■ Lower Power Version of TCM828
■ LCD Panel Bias
■ Cellular Phones
■ Pagers
■ PDAs, Portable Dataloggers
■ Battery-Powered DevicesDatasheet Voltage – Output
-1.8 V ~ -5.5 V, ±3.6 V ~ ±11 V
Voltage – Input
1.8 V ~ 5.5 V
Package / Case
SC-74A, SOT-753
Output Type
Operating Temperature
-40°C ~ 85°C