LTC3569
26
3569fe
For more information www.linear.com/LTC3569
LINEAR TECHNOLOGY CORPORATION 2009
LT 0414 REV E • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC3569
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LTC3406A/
LTC3406AB
600mA, 1.5MHz, Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 20µA,
I
SD
<1µA, ThinSOT™ Package
LTC3407A/
LTC3407A-2
Dual 600mA/600mA 1.5MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40µA,
I
SD
<1µA, MS10E, 3mm × 3mm DFN-10 Package
LTC3411A 1.25A, 4MHz, Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 60µA,
I
SD
<1µA, MS10, 3mm × 3mm DFN-10 Package
LTC3412A 2.5A, 4MHz, Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 60µA,
I
SD
<1µA, 4mm × 4mm QFN-16, TSSOP-16E Package
LTC3417A-2 Dual 1.5A/1A, 4MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN
: 2.3V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 125µA,
I
SD
<1µA, TSSOP-16E, 3mm × 5mm DFN-16 Package
LTC3419/LTC3419-1 Dual 600mA/600mA 2.25MHz, Synchronous Step-Down
DC/DC Converter
95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 35µA,
I
SD
<1µA, MS10, 3mm × 3mm DFN-10 Package
LTC3544/LTC3544B Quad 100mA/200mA/200mA/300mA, 2.25MHz Synchronous
Step-Down DC/DC Converter
95% Efficiency, V
IN
: 2.3V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 70µA,
I
SD
<1µA, 3mm × 3mm QFN-16 Package
LTC3545/LTC3545-1
Triple, 800mA × 3, 2.25MHz Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN
: 2.3V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 58µA,
I
SD
<1µA, 3mm × 3mm QFN-16 Package
LTC3547/LTC3547B Dual 300mA, 2.25MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40µA,
I
SD
<1µA, DFN-8 Package
LTC3548/LTC3548-1/
LTC3548-2
Dual 400mA and 800mA I
OUT
, 2.25MHz, Synchronous Step-
Down DC/DC Converter
95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40µA,
I
SD
<1µA, MS10E, 3mm × 3mm DFN-10 Package
LTC3561 1.25A, 4MHz, Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 240µA,
I
SD
<1µA, 3mm × 3mm DFN-8 Package
LTC3562 Quad, I
2
C Interface, 600mA/600mA/400mA/400mA, 2.25MHz
Synchronous Step-Down DC/DC Converter
95% Efficiency, V
IN
: 2.9V to 5.5V, V
OUT(MIN)
= 0.425V, I
Q
= 100µA,
I
SD
<1µA, 3mm × 3mm QFN-20 Package
3569 TA02
SV
IN
PV
IN
SW1
PGNDSGND
SW2
SW3
PGOOD
FB1
EN1
EN2
EN3
MODE
R
T
FB2
FB3
22µF
V
IN
L1
2.2µH
C
OUT1
10µF
20pF
20pF
C
OUT2
4.7µF
L2
2.2µH
R1
R2
R3
R4
OUT1
1200mA
OUT2
600mA
20pF
C
OUT3
4.7µF
L3
2.2µH
R5
R6
OUT3
600mA
LTC3569
511k
DIGITAL
CONTROL
Figure 9. Triple Programmable Buck DC/DC Regulators
