Datasheet Microchip TMC829

TCM828/TCM829
Switched Capacitor Voltage Converters
Features Description •
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• The TCM828/TCM829 devices are CMOS “chargepump” 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. 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 External component requirement is only two capacitors
(3.3 µF nominal) for standard voltage inverter
applications. With a few additional components, a
positive doubler can also be built. All other circuitry,
including control, oscillator and power MOSFETs, are …