LTC1517-5 Micropower, Regulated 5V Charge Pump in a 5-Pin SOT-23 Package FEATURES DESCRIPTION n Ultralow Power: I = 6m A Typ CC The LTC 1517-5 is a micropower charge pump DC/DC n Short-Circuit/Thermal Protected converter that produces a regulated 5V output. The input n 5V 4% Regulated Output voltage range is 2.7V to 5V. Extremely low operating current n V Range: 2.7V to 5V IN (typically 6m A with no load) and low external parts count (one n Output Current: 10mA (V 2.7V) IN 0.1m F flying capacitor and two small bypass capacitors at V IN 20mA (V 3V) IN and V ) make the part ideally suited for small, light load OUT n No Inductors battery-powered applications. The total printed circuit board 2 n 2 Ultrasmall Application Circuit (0.045in ) area of the application circuit shown below is only 0.045in . n 800kHz Switching Frequency TM The part operates as a Burst Mode switched-capacitor n Available in 5-Pin SOT-23 voltage doubler to produce a regulated output. The part has thermal shutdown capability and can survive a continuous U short circuit from V to GND. The device is available in a OUT APPLICATIONS 5-pin SOT-23 package. n Cellular Telephones , LTC and LT are registered trademarks of Linear Technology Corporation. n Battery-Operated Equipment Burst Mode is a trademark of Linear Technology Corporation. n Local Power Supplies n Handheld Instruments n PCMCIA Supplies TYPICAL APPLICATION Typical Output Voltage vs Output Current 5.2 0.1F T = 25C A C1 = 0.1F C = 6.8F OUT 5 4 5.1 + C1 C1 LTC1517-5 5.0 V GND V IN OUT V = 5V 4% 12 3 OUT V IN I = 10mA (V 2.7V) OUT IN 2.7V TO 5V I = 20mA (V 3V) OUT IN 4.9 3.3F 6.8F V = 2.7V V = 3.3V V = 3V IN IN IN 1517 TA01 4.8 0 20 40 60 80 OUTPUT CURRENT (mA) 1517 TA02 1 OUTPUT VOLTAGE (V) U ULTC1517-5 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1) ORDER PART V to GND...................................................0.3V to 6V IN TOP VIEW NUMBER V to GND ................................................0.3V to 6V OUT V 1 C1 5 IN V Short-Circuit Duration............................. Indefinite OUT LTC1517CS5-5 GND 2 Operating Temperature Range: LTC1517ES5-5 + V 3 4 C1 OUT Commercial ............................................ 0 C to 70 C S5 PART MARKING S5 PACKAGE Extended (Note 2).............................. 40 C to 85 C 5-LEAD PLASTIC SOT-23 Storage Temperature Range ................. 65 C to 150 C T = 125 C, q = 256 C/ W JMAX JA LTCX Lead Temperature (Soldering, 10 sec).................. 300 C LTTF Consult factory for Industrial and Military grade parts and for -3 and -3.3 version availability. ELECTRICAL CHARACTERISTICS V = 2.7V to 5V, C1 = 0.1m F, C = 3.3m F, C = 6.8m F, T to T , unless otherwise noted. IN IN OUT MIN MAX SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Operating Input Voltage l 2.7 5 V IN V Output Voltage 2.7V V 5V, I 10mA l 4.8 5.0 5.2 V OUT IN OUT 3V V 5V, I 20mA l 4.8 5.0 5.2 V IN OUT I Input Supply Current 2.7V V 5V, I = 0 l 615 m A CC IN OUT V Ripple V = 3V, I = 20mA, C = 6.8mF75mV OUT IN OUT OUT P-P f Oscillator Frequency 800 kHz OSC t V Turn-On Time V = 3V 1 ms ON OUT IN The l denotes specifications that apply over the full operating Note 2: Extended grade parts are 100% tested at T = 25 C. Performance A temperature range. at 40 C and 85 C is assured by design, characterization and correlation with statistical process controls. Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. 2 U W U W U WW