The LTC1754 is a micropower charge pump DC/DC converter that produces a regulated output. The input voltage range is 2V to 4.4V for 3.3V output and 2.7V to 5.5V for 5V output. Extremely low operating current and a low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the LTC1754 ideally suited for small, battery-powered applications. The total component area of the application circuit shown below is only 0.052 inch². The LTC1754 operates as a Burst Mode™ switched capacitor voltage doubler to produce a regulated output. It has thermal shutdown capability and can survive a continuous short circuit from VOUT to GND. The LTC1754 is available in a 6-pin SOT-23 package. Applications * SIM Interface Supplies for GSM Cellular Telephones * White LED Power Supplies * Li-Ion Battery Backup Supplies * Handheld Computers * Smart Card Readers * PCMCIA Local 5V Supplies * Ultralow Power: IIN = 13µA * Regulated Output Voltage: 3.3V ±4%, 5V ±4% * 5V Output Current: 50mA (VIN ≥ 3.0V) * 3.3V Output Current: 40mA (VIN ≥ 2.5V) * No Inductors Needed * Very Low Shutdown Current: <1µA * Shutdown Disconnects Load from VIN * Internal Oscillator: 600kHz * Short-Circuit and Overtemperature Protected * Ultrasmall Application Circuit: (0.052 Inch²) * 6-Pin SOT-23 Package https://elecena.pl/product/1018661/micropower-regulated-3-3v-5v-charge-pump-with-shutdown-in-sot-23 2010-02-04 https://elecena.pl/product/1018661/micropower-regulated-3-3v-5v-charge-pump-with-shutdown-in-sot-23 2016-04-27 https://elecena.pl/product/1018661/micropower-regulated-3-3v-5v-charge-pump-with-shutdown-in-sot-23 2025-01-21