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LTC1754-3.3 - Micropower, Regulated 3.3V/5V Charge Pump with Shutdown in SOT-23

The LTC®1754 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.

特点 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 典型应用

应用 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 封装信息