Datasheet

LT3980
24
3980fa
For more information www.linear.com/LT3980
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
 LINEAR TECHNOLOGY CORPORATION 2009
LT 1013 REV A • PRINTED IN USA
[phone]
●
FAX: [phone]
●
www.linear.com/LT3980
PART NUMBER DESCRIPTION COMMENTS
LT3689 36V, 60V
Transient Protection, 800mA, 2.2MHz High Efficiency Micropower
Step-Down DC/DC Converter with POR Reset and Watchdog Timer
V
IN
: 3.6V to 36V (Transient to 60V), V
OUT(MIN)
= 0.8V,
I
Q
= 75µA, I
SD
< 1µA, 3mm × 3mm QFN-16 Package
LT3682 36V, 60V
MAX
, 1A, 2.2MHz High Efficiency Micropower Step-Down DC/DC
Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 75µA, I
SD
< 1µA,
3mm
× 3mm DFN-12
LT3970 40V, 350mA (I
OUT
), 2.2MHz High Efficiency Step-Down DC/DC
Converter with Only 2.5µA of Quiescent Current
V
IN
: 4.2V to 40V, V
OUT(MIN)
= 1.21V, I
Q
= 2.5µA, I
SD
< 1µA,
3mm
× 3mm DFN-10 and MSOP-10 Packages
LT3480 36V with Transient Protection to 60V, 2A (I
OUT
), 2.4MHz, High Efficiency
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 DFN-10 and MSOP-10E Packages
LT3685 36V with Transient Protection to 60V, Dual 2A (I
OUT
), 2.4MHz,
High Efficiency Step-Down DC/DC Converter
V
IN
: 3.6V to 38V, V
OUT(MIN)
= 0.78V, I
Q
= 70µA, I
SD
< 1µA,
3mm
× 3mm DFN-10 and MSOP-10E Packages
LT3481 34V with Transient Protection to 36V, 2A (I
OUT
), 2.8MHz, High Efficiency
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 DFN-10 and MSOP-10E Packages
LT3684 34V with Transient Protection to 36V, 2A (I
OUT
), 2.8MHz,
High Efficiency Step-Down DC/DC Converter
V
IN
: 3.6V to 34V, V
OUT(MIN)
= 1.26V, I
Q
= 850µA, I
SD
< 1µA,
3mm
× 3mm DFN-10 and MSOP-10E Packages
LT3508 36V with Transient Protection to 40V, Dual 1.4A (I
OUT
), 3MHz,
High Efficiency 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 QFN-24 and TSSOP-16E Packages
LT3505 36V with Transient Protection to 40V, 1.4A (I
OUT
), 3MHz,
High Efficiency Step-Down DC/DC Converter
V
IN
: 3.6V to 34V, V
OUT(MIN)
= 0.78V, I
Q
= 2mA, I
SD
= 2µA,
3mm
× 3mm DFN-8 and MSOP-8E Packages
LT3500 36V, 40V
MAX
, 2.5MHz High Efficiency Step-Down DC/DC Converter and
LDO Controller
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 2.5mA, I
SD
= 10µA,
3mm
× 3mm DFN-10 Package
LT3507 36V, 2.5MHz, Triple (2.4A + 1.5A + 1.5A (I
OUT
)) with LDO Controller High
Efficiency Step-Down DC/DC Converter
V
IN
: 4V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 7mA, I
SD
< 1µA,
5mm
× 7mm QFN-38 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 DFN-10 and TSSOP-16E Packages
LT1976/LT1977 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,
TSSOP-16E Package
LT3434/LT3435 60V, 2.4A (I
OUT
), 200kHz/500kHz, High Efficiency Step-Down DC/DC
Converters with Burst Mode Operation
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.2V, I
Q
= 100µA, I
SD
< 1µA,
TSSOP-16E 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
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,
2mm
× 3mm DFN-6 Package
LT1766 60V, 1.2A (I
OUT
), 200kHz, High Efficiency Step-Down DC/DC Converter V
IN
: 5.5V to 60V, V
OUT(MIN)
= 1.20V, I
Q
= 2.5mA, I
SD
< 25µA,
TSSOP-16 and TSSOP-16E Packages
SW
FB
V
C
PG
RT
V
IN
BD
V
IN
3.6V TO 32V
V
OUT
1.2V
2A
4.7µF
0.47µF
100µF
f = 400kHz
D
14k
97.6k
L
3.3µH
GND
1nF
ON OFF
LT3980
3980 TA09
RUN/SS BOOST
SYNC
100k
52.3k
DA
1.2V Step-Down Converter
relaTeD parTs
Typical applicaTion
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.