LTC1503-1.8/LTC1503-2
TYPICAL APPLICATIO
DC/DC Converter with Shutdown and Soft-Start
1-CELL Li-Ion OR
3-CELL NiMH
ON OFF
LTC1503-1.8
10µF
4
VIN
2 C1–
1
VOUT
C2– 8
VOUT = 1.8V
IOUT = 100mA
10µF
1µF
3 C1+
C2+ 6
1µF
5 SHDN/SS GND 7
2N7002
10nF
1503-1.8/2 TA03
RELATED PARTS
PART NUMBER
LTC1474/LTC1475
LTC1502-3.3
LTC1514/LTC1515
LTC1555/LTC1556
LTC1627
LTC1754-3.3
LTC1754-5
DESCRIPTION
Low Quiescent Current Step-Down DC/DC Converter
Single Cell to 3.3V Quadrupler Charge Pump
Micropower, Regulated 5V Step-Up/Step-Down
Charge Pump DC/DC Converters
SIM Power Supply and Level Translator
Monolithic Synchronous Buck Step-Down
Switching Regulator
3.3V Charge Pump with Shutdown in SOT-23
5V Charge Pump with Shutdown in SOT-23
COMMENTS
IOUT to 250mA, IQ = 10µA; 8-Lead MSOP
VIN = 0.9V to 1.8V, IOUT = 10mA; IQ = 40µA
2V to 10V Input Range; Up to 50mA Output Current: Short-Circuit
and Overtemperature Protected
Step-Up/Step-Down Charge Pump Generates 5V or 3V
2.65V to 8.5V Input Range; VOUT from 0.8V, IOUT to 500mA;
Low Dropout Operation; 100% Duty Cycle
50mA Output Current, ICC = 13µA
50mA Output Current, ICC = 13µA
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX:(408)434-0507 q www.linear-tech.com
150312f LT/TP 0200 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1999