The LTC1502-3.3 is a quadrupler charge pump DC/DC converter that produces a regulated 3.3V output from a single alkaline cell input. It requires only five small external capacitors—no inductors are required. Low supply current (40µA typical, 5µA in shutdown) and minimal external components make the LTC1502-3.3 ideal for space and power conscious single-cell applications. The total printed circuit board area of the circuit shown below is less than 0.125in2. Forcing the C1−/SHDN pin through an external resistive pull-down puts the part into shutdown mode. During shutdown, the internal oscillator is stopped and the load is disconnected from VIN. An internal pull-up current on the C1−/SHDN pin forces the part back into normal operation once the pull-down resistance is removed. The LTC1502-3.3 is short-circuit protected and survives an indefinite VOUT short to ground. The LTC1502-3.3 is available in 8-pin MSOP and SO packages. Applications * Pagers * Battery Backup Supplies * Portable Electronic Equipment * Handheld Medical Instruments * Glucose Meters * Input Voltage Range: 0.9V to 1.8V * 0.9V Guaranteed Start-Up Voltage * Regulated Output Voltage: 3.3V ±4% * Output Current: 10mA (VIN ≥ 1V) * No Inductors * Shutdown Disconnects Load from VIN * Low Operating Current: 40µA * Low Shutdown Current: 5µA * Short-Circuit and Overtemperature Protected * Application Circuit Fits in <0.125in2 PCB Area * Available in 8-Pin MSOP and SO Packages https://elecena.pl/product/378678/single-cell-to-3-3v-regulated-charge-pump-dc-dc-converter 2007-04-24 https://elecena.pl/product/378678/single-cell-to-3-3v-regulated-charge-pump-dc-dc-converter 2016-04-27 https://elecena.pl/product/378678/single-cell-to-3-3v-regulated-charge-pump-dc-dc-converter 2025-01-19