LT3500
28
3500fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
?/DIV>
FAX: (408) 434-0507
?
www.linear.com
?LINEAR TECHNOLOGY CORPORATION 2007
LT 0111 REV C " PRINTED IN USA
TYPICAL APPLICATION
PART NUMBER DESCRIPTION
COMMENTS
LT1766
60V, 1.2A (I
OUT
), 200kHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 5.5V to 60V, V
OUT(MIN)
= 1.20V, I
Q
= 2.5mA, I
SD
= 25糀,
16-Lead TSSOPE Package
LT1933
36V, 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
< 1糀,
ThinSOT" Package
LT1936
36V, 1.4A (I
OUT
), 500kHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 1.2V, I
Q
= 1.9mA, I
SD
< 1糀,
8-Lead MS8E Package
LT1940
Dual 25V, 1.4A (I
OUT
), 1.1MHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.6V to 25V, V
OUT(MIN)
= 1.20V, I
Q
= 3.8mA, I
SD
< 30糀,
16-Lead TSSOPE Package
LTC3407/LTC3407-2 Dual 600mA/800mA, 1.5MHz/2.25MHz Synchronous Step-Down
DC/DC Converter
V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40糀, I
SD
< 1糀,
3mm ?3mm DFN and 10-Lead MS10E Packages
LT3434/LT3435 60V, 2.4A (I
OUT
), 200kHz/500kHz High Ef ciency Step-Down DC/DC
Converters with Burst Mode Operation
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.20V, I
Q
= 100糀, I
SD
< 1糀,
16-Lead TSSOPE 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
= 100糀, I
SD
< 1糀,
10-Lead 3mm ?3mm DFN, 16-Lead TSSOPE Package
LT3493
36V, 1.4A (I
OUT
), 750kHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 1.9mA, I
SD
< 1糀,
6-Lead 2mm ?3mm DFN Package
LT3501
Dual 25V, 3A (I
OUT
), 1.5MHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.3V to 25V, V
OUT(MIN)
= 0.8V, I
Q
= 3.7mA, I
SD
< 10糀,
20-Lead TSSOPE Package
LT3502/LT3502A 40V, 500mA (I
OUT
), 1.1MHz/2.2MHz High Ef ciency Step-Down
DC/DC Converter
V
IN
: 3V to 40V, V
OUT(MIN)
= 0.8V, I
Q
= 1.5mA, I
SD
< 2糀,
8-Lead 2mm ?2mm DFN Package
LT3503
20V, 1A (I
OUT
), 2.2MHz High Ef ciency Step-Down DC/DC Converter V
IN
: 3.6V to 20V, V
OUT(MIN)
= 0.78V, I
Q
= 1.9mA, I
SD
< 1糀,
6-Lead 2mm ?3mm DFN Package
LT3505
36V, 1.2A (I
OUT
), 3MHz High Ef ciency Step-Down DC/DC Converter V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.78V, I
Q
= 2mA, I
SD
< 2糀,
8-Lead 3mm ?3mm DFN and MSE Packages
LT3506/LT3506A Dual 25V, 1.6A (I
OUT
), 575kHz/1.1MHz High Ef ciency Step-Down
DC/DC Converters
V
IN
: 3.6V to 25V, V
OUT(MIN)
= 0.8V, I
Q
= 3.8mA, I
SD
< 30糀,
16-Lead 4mm ?5mm DFN and TSSOPE Packages
LT3508
Dual 36V, 1.4A (I
OUT
), 2.5MHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 4.3mA, I
SD
< 1糀,
24-Lead 4mm ?4mm QFN and 16-Lead TSSOPE Packages
LT3510
Dual 25V, 2A (I
OUT
), 1.5MHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.3V to 25V, V
OUT(MIN)
= 0.8V, I
Q
= 3.7mA, I
SD
< 10糀,
20-Lead TSSOPE 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
= 40糀, I
SD
< 1糀,
3mm ?3mm DFN and 10-Lead MSE Packages
LT3680
36V, 3.5A (I
OUT
), 2.4MHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.79V, I
Q
= 75糀, I
SD
< 1糀,
3mm ?3mm DFN and MS10E Packages
ThinSOT is a trademark of Linear Technology Corporation
1.8V/2A Step-Down Regulator
L1
2.2糎
D1
D2
C1
2.2糉
C2
0.47糉
C5
0.47糉
C7
22糉
C3
220pF
R5
40.2k
R2
8.06k
R6
49.9k
R1
10k
R3
24.9k
R4
8.06k
4.5V TO 36V
C6
1糉
3500 TA05
V
OUT1
1.8V
2A
V
OUT2
3.3V
10mA
LDRV
V
IN
LFB
BST
SHDN
SS
LT3500
R
T
/SYNC
V
C
SW
FB
PG
PG
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