LT3502/LT3502A
20
3502f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2007
LT 0407 PRINTED IN USA
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1766
60V, 1.2A (IOUT), 200kHz, High Efciency Step-Down
DC/DC Converter
VIN: 5.5V to 60V, VOUT(MIN) = 1.2V, IQ = 2.5mA, ISD = 25μA,
TSSOP16/TSSOP16E Packages
LT1933
500mA (IOUT), 500kHz, Step-Down Switching Regulator in
SOT-23
VIN: 3.6V to 36V, VOUT(MIN) = 1.2V, IQ = 1.6mA, ISD < 1μA,
ThinSOT
TM Package
LT1936
36V, 1.4A (IOUT), 500kHz, High Efciency Step-Down
DC/DC Converter
VIN: 3.6V to 36V, VOUT(MIN) = 1.2V, IQ = 1.9mA, ISD < 1μA,
MS8E Package
LT1940
Dual 25V, 1.4A (IOUT), 1.1MHz, High Efciency Step-Down
DC/DC Converter
VIN: 3.6V to 25V, VOUT(MIN) = 1.20V, IQ = 3.8mA, ISD < 30μA,
TSSOP16E Package
LT1976/LT1977
60V, 1.2A (IOUT), 200kHz/500kHz High Efciency Step-
Down DC/DC Converters with Burst Mode Operation
VIN: 3.3V to 60V, VOUT(MIN) = 1.20V, IQ = 100μA, ISD < 1μA,
TSSOP16E Package
LTC 3407/LTC3407-2
Dual 600mA/800mA, 1.5MHz/2.25MHz, Synchronous
Step-DownDC/DC Converters
VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 40μA, ISD <1μA,
3mm
× 3mm DFN, MS10E Package
LT3434/LT3435
60V, 1.2A (IOUT), 200kHz/500kHz High Efciency Step-
Down DC/DC Converters with Burst Mode Operation
VIN: 3.3V to 60V, VOUT(MIN) = 1.20V, IQ = 100μA, ISD < 1μA,
TSSOP16E Package
LT3437
60V, 400mA (IOUT), Micropower Step-Down DC/DC
Converter with Burst Mode Operation
VIN: 3.3V to 60V, VOUT(MIN) = 1.25V, IQ = 100μA, ISD < 1μA,
DFN Package
LT3493
36V, 1.4A (IOUT), 750kHz, High Efciency Step-Down
DC/DC Converter
VIN: 3.6V to 36V, VOUT(MIN) = 0.8V, IQ = 1.9mA, ISD < 1μA,
DFN Package
LT3501
Dual 25V, 3A (IOUT), 1.5MHz, High Efciency Step-Down
DC/DC Converter
VIN: 3.3V to 25V, VOUT(MIN) = 0.8V, IQ = 3.7mA, ISD < 10μA,
TSSOP20E Package
LT3503
20V, 1A (IOUT), 2.2MHz, High Efciency Step-Down
DC/DC Converter
VIN: 3.6V to 20V, VOUT(MIN) = 0.78V, IQ = 1.9mA, ISD < 1μA,
2mm
× 3mm DFN Package
LT3505
36V, 1.2A (IOUT), 3MHz, High Efciency Step-Down
DC/DC Converter
VIN: 3.6V to 36V, VOUT(MIN) = 0.78V, IQ = 2mA, ISD < 2μA,
3mm
× 3mm DFN, MS8E Packages
LT3506/LT3506A
Dual 25V, 1.6A (IOUT), 575kHz/1.1MHz, High Efciency
Step-Down DC/DC Converters
VIN: 3.6V to 25V, VOUT(MIN) = 0.8V, IQ = 3.8mA, ISD < 30μA,
4mm
× 5mm DFN Package
LT3508
Dual 36V, 1.4A (IOUT), 2.5MHz, High Efciency Step-Down
DC/DC Converter
VIN: 3.6V to 36V, VOUT(MIN) = 0.8V, IQ = 4.3mA, ISD < 1μA,
4mm
× 4mm QFN, TSSOP16E Packages
LT3510
Dual 25V, 2A (IOUT), 1.5MHz, High Efciency Step-Down
DC/DC Converter
VIN: 3.3V to 25V, VOUT(MIN) = 0.8V, IQ = 3.7mA, ISD < 10μA,
TSSOP20E Package
LTC3548
Dual 400mA + 800mA, 2.25MHz Synchronous Step-Down
DC/DC Converter
VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 40μA, ISD < 1μA,
3mm
× 3mm DFN, MS10E Packages
Burst Mode is a registered trademark of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation.
TYPICAL APPLICATION
5V Step-Down Converter
VIN
C3
0.1
μF
3502TA05a
L1
10
μH
D1
SHDN
BOOST
SW
LT3502A
BD
GND
DA
FB
OFF ON
C1
10
μF
R2
10k
R1
52.3k
C2
1
μF
VIN
6.7V TO 40V
VOUT
5V
500mA
C1: LMK316BJ106ML-BR
L1: LQH43CN100K03
VIN
C3
0.1
μF
3502TA05b
L1
22
μH
D1
SHDN
BOOST
SW
LT3502
BD
GND
DA
FB
OFF ON
C1
22
μF
R2
10k
R1
52.3k
C2
1
μF
VIN
6.4V TO 40V
VOUT
5V
500mA
C1: LMK316BJ106ML-BR
L1: LQH43CN100K03