Datasheet

LTC3127
20
3127f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
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www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2010
LT 0210 • PRINTED IN USA
relaTeD parTs
PART NUMBER DESCRIPTION COMMENTS
LTC3101 Wide V
IN
, 1MHz Multioutput DC/DC Converter and
PowerPath™ Controller
95% Efficiency, V
IN
: 1.8V to 5.5V, V
OUT(MAX)
: 1.8V to 5.25V, I
Q
= 35µA,
I
SD
< 1µA, 4mm × 4mm QFN-24 Package
LTC3125 1.2A I
OUT
, 1.6MHz, Synchronous Boost DC/DC
Converter With Adjustable Input Current Limit
94% Efficiency, V
IN
: 1.8V to 5.5V, V
OUT(MAX)
= 5.25V, I
Q
= 15µA, I
SD
< 1µA,
2mm × 3mm DFN-8 Package
LTC3606B 800mA I
OUT
, Synchronous Step-Down DC/DC
Converter with Average Input Current Limit
95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MAX)
= 0.6V, I
Q
= 420µA, I
SD
< 1µA,
3mm × 3mm DFN-8 Package
LTC3440 600mA I
OUT
, 2MHz, Synchronous Buck-Boost
DC/DC Converter
95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT
: 2.5V to 5.5V, I
Q
= 25µA,
I
SD
< 1µA, 3mm × 3mm DFN-10 and MSOP-10 Packages
LTC3441/LTC3441-2/
LTC3441-3
1.2A I
OUT
, 2MHz, Synchronous Buck-Boost DC/DC
Converter
95% Efficiency, V
IN
: 2.4V to 5.5V, V
OUT
: 2.4V to 5.25V, I
Q
= 50µA,
I
SD
< 1µA, 3mm × 4mm DFN-12 Package
LTC3520 1A 2MHz, Synchronous Buck-Boost and 600mA
Buck Converter
95% Efficiency, V
IN
: 2.2V to 5.5V, V
OUT(MAX)
= 5.25V, I
Q
= 55µA, I
SD
< 1µA,
4mm × 4mm QFN-24 Package
LTC3530 600mA I
OUT
, 2MHz, Synchronous Buck-Boost
DC/DC Converter
95% Efficiency, V
IN
: 1.8V to 5.5V, V
OUT
: 1.8V to 5.25V, I
Q
= 40µA,
I
SD
< 1µA, 3mm × 3mm DFN-10 and MSOP-10 Packages
LTC3532 500mA I
OUT
, 2MHz, Synchronous Buck-Boost
DC/DC Converter
95% Efficiency, V
IN
: 2.4V to 5.5V, V
OUT
: 2.4V to 5.25V, I
Q
= 35µA,
I
SD
< 1µA, 3mm × 3mm DFN-10 and MSOP-10 Packages
LTC3533 2A I
OUT
, 2MHz, Synchronous Buck-Boost DC/DC
Converter
95% Efficiency, V
IN
: 1.8V to 5.5V, V
OUT
: 1.8V to 5.25V, I
Q
= 40µA,
I
SD
< 1µA, 3mm × 4mm DFN-14 Package
LTC3538 800mA I
OUT
, 1MHz, Synchronous Buck-Boost
DC/DC Converter
95% Efficiency, V
IN
: 2.4V to 5.5V, V
OUT
: 1.8V to 5.25V, I
Q
= 35µA,
I
SD
< 1µA, 2mm × 3mm DFN-8 Package
LTC3534 500mA I
OUT
, 1MHz, Synchronous Buck-Boost
DC/DC Converter
95% Efficiency, V
IN
: 2.4V to 7V, V
OUT
: 1.8V to 2V, I
Q
= 25µA,
I
SD
< 1µA, 3mm × 3mm DFN-16 and SSOP-16 Packages
Single Supercapacitor Charger (1000mA Max Input Current)
V
IN
1.8V TO 5V
V
OUT
2.5V
ONOFF
60.4k
10µF
1.05M
C1
100F
1M
3127 TA06
SW2SW1
V
OUT
V
IN
FB
PGNDSGND
PROG
SHDN
LTC3127
C1: COOPER BUSSMANN POWERSTOR
B-SERIES, B1860-2R5107-R
L1: COILCRAFT XPL4020-472ML
BURSTPWM
MODE
499k
V
C
100pF
L1
4.7µH
Typical applicaTion