TC1219
Features
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- Charge Pumps in 6-Pin SOT-23A Package >95% Voltage Conversion Efficiency Voltage Inversion and/or Doubling Operates from +2.5V to +5.5V Up to 25m A Output Current Only Two External Capacitors Required Low Power Consumption Power-Saving Shutdown Mode TC1220 patible with 1.8V Logic Systems
TC1219/TC1220
General Description
The TC1219/TC1220 are CMOS “charge-pump” voltage converters in ultra-small 6-Pin SOT-23A packages. They invert and/or double an input voltage which can range from +2.5V to +5.5V. Conversion efficiency is typically >95%. Switching frequency is 12k Hz for the TC1219, 35k Hz for the TC1220. When the shutdown pin is held at a logic low, the device goes into a very low power mode of operation, consuming less than 1µA of supply current. External ponent requirement is only two capacitors for standard voltage inverter applications. With a few additional ponents a positive doubler can also be built. All other circuitry, including control,...
