LTC1517-5 Datasheet | Linear Technology

LTC1517-5 Micropower, Regulated 5V Charge Pump in a 5-Pin SOT-23 Package Features s s s s s DESCRIPTION The LTC®1517-5 is a micropower charge pump DC/DC converter that produces a regulated 5V output. The input voltage range is 2.7V to 5V. Extremely low operating current (typically 6µA with no load) and low external parts count (one 0.1µF flying capacitor and two small bypass capacitors at VIN and VOUT) make the part ideally suited for small, light load battery-powered applications. The total printed circuit board area of the application circuit shown below is only 0.045in2. The part operates as a Burst Mode TM switched-capacitor voltage doubler to produce a regulated output. The part has thermal shutdown capability and can survive a continuous short circuit from VOUT to GND. The device is available in a 5-pin SOT-23 package. , LTC and LT are registered trademarks of Linear Technology Corporation. Burst Mode is a trademark of Linear Technology Corporation. s s s s Ultralow Power: ICC = 6µA Typ Short-Circuit/Thermal Protected 5V ± 4% Regulated Output VIN Range: 2.7V to 5V Output Current: 10m A (VIN ≥ 2.7V) 20m A (VIN ≥ 3V) No Inductors Ultrasmall Application Circuit (0.045in2) 800k Hz Switching Frequency Available in 5-Pin SOT-23 U APPLICATIONS s s s s s Cellular Telephones Battery-Operated Equipment Local Power Supplies Handheld Instruments PCMCIA Supplies TYPICAL APPLICATION Typical Output Voltage vs Output Current 0.1µF 5 C1 - LTC1517-5 VIN VIN 2.7V TO 5V 3.3µF 1 GND 2 VOUT 3 6.8µF VOUT = 5V ± 4% IOUT = 10m A (VIN ≥ 2.7V) IOUT = 20m A (VIN ≥ 3V) 1517 TA01 C1 + OUTPUT VOLTAGE (V) TA = 25°C C1 = 0.1µF COUT = 6.8µF 4.9 VIN = 2.7V VIN = 3V VIN = 3.3V 4.8 40 60 20 OUTPUT CURRENT (m A) 1517...