Datasheet
LT3502/LT3502A
24
3502fd
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 0809 REV D • PRINTED IN USA
PART NUMBER DESCRIPTION COMMENTS
LT1766 60V, 1.2A (I
OUT
), 200kHz, High Efficiency Step-Down
DC/DC Converter
V
IN
: 5.5V to 60V, V
OUT(MIN)
= 1.2V, I
Q
= 2.5mA, I
SD
= 25µA,
TSSOP16/TSSOP16E Packages
LT1933 500mA (I
OUT
), 500kHz, Step-Down Switching Regulator in
SOT-23
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 1.2V, I
Q
= 1.6mA, I
SD
< 1µA,
ThinSOT™ Package
LT1936 36V
, 1.4A (I
OUT
), 500kHz, High Efficiency Step-Down
DC/DC Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 1.2V, I
Q
= 1.9mA, I
SD
< 1µA,
MS8E Package
LT1940 Dual 25V
, 1.4A (I
OUT
), 1.1MHz, High Efficiency Step-Down
DC/DC Converter
V
IN
: 3.6V to 25V, V
OUT(MIN)
= 1.20V, I
Q
= 3.8mA, I
SD
< 30µA,
TSSOP16E Package
LT1976/
L
T1977
60V, 1.2A (I
OUT
), 200kHz/500kHz High Efficiency Step-Down
DC/DC Converters with Burst Mode
®
Operation
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.20V, I
Q
= 100µA, I
SD
< 1µA,
TSSOP16E Package
LT C
3407/
LTC3407-2
Dual 600mA/800mA, 1.5MHz/2.25MHz
, Synchronous
Step-DownDC/DC Converters
V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40µA, I
SD
<1µA,
3mm × 3mm DFN, MS10E Package
LT3434/
L
T3435
60V, 1.2A (I
OUT
), 200kHz/500kHz High Efficiency Step-Down
DC/DC Converters with Burst Mode Operation
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.20V, I
Q
= 100µA, I
SD
< 1µA,
TSSOP16E Package
LT3437 60V
, 400mA (I
OUT
), Micropower Step-Down DC/DC Converter
with Burst Mode Operation
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.25V, I
Q
= 100µA, I
SD
< 1µA,
DFN Package
LT3493 36V
, 1.4A (I
OUT
), 750kHz, High Efficiency Step-Down
DC/DC Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 1.9mA, I
SD
< 1µA,
DFN Package
LT3501 Dual 25V
, 3A (I
OUT
), 1.5MHz, High Efficiency Step-Down
DC/DC Converter
V
IN
: 3.3V to 25V, V
OUT(MIN)
= 0.8V, I
Q
= 3.7mA, I
SD
< 10µA,
TSSOP20E Package
LT3503 20V
, 1A (I
OUT
), 2.2MHz, High Efficiency Step-Down
DC/DC Converter
V
IN
: 3.6V to 20V, V
OUT(MIN)
= 0.78V, I
Q
= 1.9mA, I
SD
< 1µA,
2mm × 3mm DFN Package
LT3505 36V
, 1.2A (I
OUT
), 3MHz, High Efficiency Step-Down
DC/DC Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.78V, I
Q
= 2mA, I
SD
< 2µA,
3mm × 3mm DFN, MS8E Packages
LT3506/
L
T3506A
Dual 25V, 1.6A (I
OUT
), 575kHz/1.1MHz, High Efficiency Step-
Down DC/DC Converters
V
IN
: 3.6V to 25V, V
OUT(MIN)
= 0.8V, I
Q
= 3.8mA, I
SD
< 30µA,
4mm × 5mm DFN Package
LT3508 Dual 36V
, 1.4A (I
OUT
), 2.5MHz, High Efficiency Step-Down
DC/DC Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 4.3mA, I
SD
< 1µA,
4mm × 4mm QFN, TSSOP16E Packages
LT3510 Dual 25V
, 2A (I
OUT
), 1.5MHz, High Efficiency Step-Down
DC/DC Converter
V
IN
: 3.3V to 25V, V
OUT(MIN)
= 0.8V, I
Q
= 3.7mA, I
SD
< 10µA,
TSSOP20E Package
LTC3548
Dual 400mA + 800mA, 2.25MHz Synchronous Step-Down
DC/DC Converter
V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40µA, I
SD
< 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
V
IN
C3
0.1µF
3502 TA06a
L1
10µH
D1
SHDN
BOOST
SW
LT3502A
BD
GND
DA
FB
OFF ON
C1
10µF
R2
10k
R1
52.3k
C2
1µF
V
IN
6.7V TO 40V
V
OUT
5V
500mA
C1: LMK316BJ106ML-BR
L1: LQH43CN100K03
V
IN
C3
0.1µF
3502 TA06b
L1
22µH
D1
SHDN
BOOST
SW
LT3502
BD
GND
DA
FB
OFF ON
C1
22µF
R2
10k
R1
52.3k
C2
1µF
V
IN
6.4V TO 40V
V
OUT
5V
500mA
C1: LMK316BJ106ML-BR
L1: LQH43CN100K03
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