LTC1754-5 Datasheet | Linear Technology

LTC1754-3.3/LTC1754-5 Micropower, Regulated 3.3V/5V Charge Pump with Shutdown in SOT-23 Features s s s s s s s s s s s DESCRIPTIO Ultralow Power: IIN = 13µA Regulated Output Voltage: 3.3V ±4%, 5V ±4% 5V Output Current: 50m A (VIN ≥ 3.0V) 3.3V Output Current: 40m A (VIN ≥ 2.5V) No Inductors Needed Very Low Shutdown Current: <1µA Shutdown Disconnects Load from VIN Internal Oscillator: 600k Hz Short-Circuit and Overtemperature Protected Ultrasmall Application Circuit: (0.052 Inch2) 6-Pin SOT-23 Package 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 ponent area of the application circuit shown below is only 0.052 inch2. The LTC1754 operates as a Burst Mode TM 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. , LTC and LT are registered trademarks of Linear Technology Corporation. Burst Mode is a trademark of Linear Technology Corporation. U APPLICATIO S s s s s s s SIM Interface Supplies for GSM Cellular Telephones White LED Power Supplies Li-Ion Battery Backup Supplies Handheld puters Smart Card Readers PCMCIA Local 5V Supplies TYPICAL APPLICATIO VOUT 10µF 1 2 3 VOUT GND C+ VIN 6 5 4 1µF LTC1754-X LTC1754-3.3 Output Voltage vs Supply Voltage VIN 10µF OUTPUT VOLTAGE (V) IOUT = 20m A COUT = 10µf CFLY = 1µF TA = 85°C 1754 TA01 OUTPUT VOLTAGE (V) ON/OFF SHDN C - 3.35 Regulated 3.3V Output from 2V to 4.4V Input VOUT = 3.3V ± 4% IOUT = 0m A TO 20m A, VIN > 2.0V IOUT = 0m A TO 40m A, VIN > 2.5V TA = 25°C TA = - 40°C Regulated 5V Output from...