Datasheet

LT3972
24
3972fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
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www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2008
LT 1009 REV A • PRINTED IN USA
PART NUMBER DESCRIPTION COMMENTS
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
TM
Package
LT1936 36V, 1.4A (I
OUT
), 500kHz, High Effi ciency 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 Effi ciency Step-Down DC/DC
Converter
V
IN
: 3.6V to 25V, V
OUT(MIN)
= 1.2V, I
Q
= 3.8mA, I
SD
< 30μA,
TSSOP16E Package
LT1976/LT1967 60V, 1.2A (I
OUT
), 200kHz/500kHz, High Effi ciency Step-Down
DC/DC Converters with Burst Mode Operation
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.2V, I
Q
= 100μA, I
SD
< 1μA,
TSSOP16E Package
LT3434/LT3435 60V, 2.4A (I
OUT
), 200kHz/500kHz, High Effi ciency Step-Down
DC/DC Converters with Burst Mode Operation
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.2V, I
Q
= 100μA, I
SD
< 1μA,
TSSOP16 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,
3mm
× 3mm DFN10 and TSSOP16E Packages
LT3480 36V with Transient Protection to 60V, 2A (I
OUT
), 2.4MHz, High
Effi ciency Step-Down DC/DC Converter with Burst Mode Operation
V
IN
: 3.6V to 38V, V
OUT(MIN)
= 0.78V, I
Q
= 70μA, I
SD
< 1μA,
3mm
× 3mm DFN10 and MSOP10E Packages
LT3481 34V with Transient Protection to 36V, 2A (I
OUT
), 2.8MHz, High
Effi ciency Step-Down DC/DC Converter with Burst Mode Operation
V
IN
: 3.6V to 34V, V
OUT(MIN)
= 1.26V, I
Q
= 50μA, I
SD
< 1μA,
3mm
× 3mm DFN10 and MSOP10E Packages
LT3493 36V, 1.4A (I
OUT
), 750kHz High Effi ciency Step-Down
DC/DC Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 1.9mA, I
SD
< 1μA,
2mm
× 3mm DFN6 Package
LT3505 36V with Transient Protection to 40V, 1.4A (I
OUT
), 3MHz,
High Effi ciency Step-Down DC/DC Converter
V
IN
: 3.6V to 34V, V
OUT(MIN)
= 0.78V, I
Q
= 2mA, I
SD
= 2μA,
3mm
× 3mm DFN8 and MSOP8E Packages
LT3508 36V with Transient Protection to 40V, Dual 1.4A (I
OUT
), 3MHz,
High Effi ciency Step-Down DC/DC Converter
V
IN
: 3.7V to 37V, V
OUT(MIN)
= 0.8V, I
Q
= 4.6mA, I
SD
= 1μA,
4mm
× 4mm QFN24 and TSSOP16E Packages
LT3680 36V, 3.5A, 2.4MHz, Low Quiescent Current (<75μA) Step-Down
DC/DC Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 75μA, I
SD
< 1μA, 3mm ×
3mm DFN10, MS10E Package
LT3684 34V with Transient Protection to 36V, 2A (I
OUT
), 2.8MHz,
High Effi ciency Step-Down DC/DC Converter
V
IN
: 3.6V to 34V, V
OUT(MIN)
= 1.26V, I
Q
= 850μA, I
SD
< 1μA,
3mm
× 3mm DFN10 and MSOP10E Packages
LT3685 36V with Transient Protection to 60V, Dual 2A (I
OUT
), 2.4MHz,
High Effi ciency Step-Down DC/DC Converter
V
IN
: 3.6V to 38V, V
OUT(MIN)
= 0.78V, I
Q
= 70μA, I
SD
< 1μA,
3mm
× 3mm DFN10 and MSOP10E Packages
LT3693 36V, 3.5A, 2.4MHz, Step-Down DC/DC Converter V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 1.3mA, I
SD
< 1μA, 3mm ×
3mm DFN10, MS10E Package
ThinSOT is a trademark of Linear Technology Corporation.
SW
FB
V
C
PG
RT
V
IN
BD
V
IN
3.6V TO 27V
V
OUT
1.2V
3.5A
4.7μF
0.47μF
100μF
f = 500kHz
D: ON SEMI MBRA340
L: NEC MPLC0730L3R3
D
17k
78.7k
L
3.3μH
GND
470pF
ON OFF
LT3972
3972 TA09
RUN/SS BOOST
SYNC
100k
52.3k
1.2V Step-Down Converter
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