Datasheet LT1610 (Analog Devices) - 16

LT1610
U TYPICAL APPLICATIONS N Li-Ion to 3.3V SEPIC DC/DC Converter Efficiency
C3 80 1µF VIN = 2.7V L1 CERAMIC VIN = 3.6V 22µH D1 INPUT V • OUT V 70 IN = 4.2V Li-ION 3.3V 3V to 4.2V 120mA 6 5 60 1M • VIN SW L2 + 1 2 C1 22 V µH C FB 50 22µF LT1610 + C2 EFFICIENCY (%) 6.3V 604k 22 8 µF 3 COMP SHDN 6.3V 40 GND PGND 7 4 30 0.1 1 10 100 LOAD CURRENT (mA) C1, C2: AVX TAJB226M006 1610 TA14 C3: AVX 1206YC105 (X7R) 1610 TA15 SHUTDOWN D1: MOTOROLA MBR0520 L1, L2: MURATA LQH3C220 (UNCOUPLED) OR SUMIDA CLS62-220 (COUPLED)
4-Cell to 5V/120mA SEPIC DC/DC Converter 4-Cell to 5V Efficiency
C3 80 1µF VIN = 3.6V L1 CERAMIC VIN = 4.2V 22µH D1 V • OUT V 70 IN = 5V 5V VIN = 6.5V 120mA 6 5 60 1M • VIN SW L2 + 1 2 C1 22 V µH C FB 50 4 CELLS 22µF LT1610 + C2 EFFICIENCY (%) 6.3V 324k 22 8 µF 3 COMP SHDN 6.3V 40 GND PGND 7 4 30 0.1 1 10 100 LOAD CURRENT (mA) C1, C2: AVX TAJB226M006 1610 TA16 C3: AVX 1206YC105 (X7R) 1610 TA17 SHUTDOWN D1: MOTOROLA MBR0520 L1, L2: MURATA LQH3C220 (UNCOUPLED) OR SUMIDA CLS62-220 (COUPLED)
RELATED PARTS PART NUMBER DESCRIPTION COMMENTS
LTC®1474 Micropower Step-Down DC/DC Converter 94% Efficiency, 10µA IQ, 9V to 5V at 250mA LT1307 Single Cell Micropower 600kHz PWM DC/DC Converter 3.3V at 75mA from 1 Cell, MSOP Package LTC1440/1/2 Ultralow Power Single/Dual Comparators with Reference 2.8µA IQ, Adjustable Hysteresis LTC1502-3.3 Single Cell to 3.3V Regulated Charge Pump 40µA IQ, No Inductors, 3.3V at 10mA from 1V Input LT1521 Micropower Low Dropout Linear Regulator 500mV Dropout, 300mA Current, 12µA IQ LT1611 Inverting 1.4MHz DC/DC Converter 5V to – 5V at 150mA, Tiny SOT-23 Package LT1613 Step-Up 1.4MHz DC/DC Converter 3.3V to 5V at 200mA, Tiny SOT-23 Package LTC1682 Doubler Charge Pump with Low Noise Linear Regulator Fixed 3.3V and 5V Outputs, 1.8V to 4.4V Input Range, 50mA Output 1610f LT/TP 0699 4K • PRINTED IN USA 16 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear-tech.com LINEAR TECHNOLOGY CORPORATION 1998