16
LTC3251/
LTC3251-1.2/LTC3251-1.5
32511215fb
PART NUMBER DESCRIPTION COMMENTS
LTC1514 50mA, 650kHz, Step-Up/Down Charge Pump V
IN
: 2.7V to 10V, V
OUT
: 3V or 5V, Regulated Output, I
Q
: 60µA,
with Low Battery Comparator I
SD
: 10µA, S8 Package
LTC1515 50mA, 650kHz, Step-Up/Down Charge Pump V
IN
: 2.7V to 10V, V
OUT
: 3.3V or 5V, Regulated Output, I
Q
: 60µA,
with Power-On Reset I
SD
: <1µA, S8 Package
LT1776 500mA (I
OUT
), 200kHz, High Efficiency 90% Efficiency, V
IN
: 7.4V to 40V, V
OUT(MIN)
: 1.24V,
Step-Down DC/DC Converter I
Q
: 3.2mA, I
SD
: 30µA, N8, S8 Packages
LTC1911-1.5/ 250mA, 1.5MHz, High Efficiency Up to 90% Efficiency, V
IN
: 2.7V to 5.5V, V
OUT
: 1.5V/1.8V, Regulated Output,
LTC1911-1.8 Step-Down Charge Pump I
Q
: 180µA, I
SD
: 10µA, MS8 Package
LTC3250-1.5 250mA, 1.5MHz, High Efficiency Up to 90% Efficiency, V
IN
: 3.1V to 5.5V, V
OUT
: 1.5V, Regulated Output,
Step-Down Charge Pump I
Q
: 35µA, I
SD
: <1µA, ThinSOT Package
LTC3252 250mA, Dual, Low Noise, Inductorless Up to 90% Efficiency, V
IN
: 2.7V to 5.5V, V
OUT
: 0.9V to 1.6V,
Step-Down DC/DC Converter I
Q
: 60µA, DFN Package
LTC3404 600mA (I
OUT
), 1.4MHz, Synchronous 95% Efficiency, V
IN
: 2.7V to 6V, V
OUT(MIN)
: 0.8V,
Step-Down DC/DC Converter I
Q
: 10µA, I
SD
: <1µA, MS8 Package
LTC3405/LTC3405A 300mA (I
OUT
), 1.5MHz, Synchronous 95% Efficiency, V
IN
: 2.7V to 6V, V
OUT(MIN)
: 0.8V,
Step-Down DC/DC Converter I
Q
: 20µA, I
SD
: <1µA, ThinSOT Package
LTC3406/LTC3406B 600mA (I
OUT
), 1.5MHz, Synchronous 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
: 0.6V,
Step-Down DC/DC Converter I
Q
: 20µA, I
SD
: <1µA, ThinSOT Package
LTC3411 1.25A (I
OUT
), 4MHz, Synchronous Step-Down 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
: 0.8V,
DC/DC Converter I
Q
: 60µA, I
SD
: <1µA, MS Package
LTC3412 2.5A (I
OUT
), 4MHz, Synchronous Step-Down 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
: 0.8V,
DC/DC Converter I
Q
: 60µA, I
SD
: <1µA, TSSOP-16E Package
LTC3440 600mA (I
OUT
), 2MHz, Synchronous 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT
: 2.5V to 5.5V,
Buck-Boost DC/DC Converter I
Q
: <25µA, I
SD
: 1µA, MS Package
LTC3441 1.2A (I
OUT
), 1MHz, Synchronous 95% Efficiency, V
IN
: 2.4V to 5.5V, V
OUT
: 2.4V to 5.25V,
Buck-Boost DC/DC Converter I
Q
: <25µA, I
SD
: 1µA, DFN Package
LT 0306 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2003
RELATED PARTS
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
U
TYPICAL APPLICATIO
MD0 MD1
LTC3251-1.2
V
IN
19
C1
+
1µF
1µF
1-CELL Li-Ion
OR
3-CELL NiMH
C1
–
GND
7
8
6
10
2
3
4
5,11
V
OUT
C2
+
C2
–
MODE
1µF
10µF
X5R
6.3V
V
OUT
= 1.2V
I
OUT
UP TO 300mA, V
IN
≥ 2.8V
I
OUT
UP TO 500mA, V
IN
≥ 3.0V
3251 TA04
µP
1.2V Output with mProcessor Control of Operating Modes (Spread Spectrum Disabled)
