Datasheet

LTC3547
16
3547fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2006
LT 0906 REV A • PRINTED IN USA
PART NUMBER DESCRIPTION COMMENTS
LTC3405/LTC3405A 300mA (I
OUT
), 1.5MHz, Synchronous Step-Down
DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT
= 0.8V, I
Q
= 20µA,
I
SD
<1µA, ThinSOT
TM
Package
LTC3406/LTC3406B 600mA (I
OUT
), 1.5MHz, Synchronous Step-Down
DC/DC Converter
96% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT
= 0.6V, I
Q
= 20µA,
I
SD
<1µA, ThinSOT Package
LTC3407/LTC3407-2 Dual 600mA/800mA (I
OUT
), 1.5MHz/2.25MHz,
Synchronous Step-Down DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT
= 0.6V, I
Q
= 40µA,
I
SD
<1µA, MS10E, DFN Packages
LTC3409 600mA (I
OUT
), 1.7MHz/2.6MHz, Synchronous
Step-Down DC/DC Converter
96% Effi ciency, V
IN
: 1.6V to 5.5V, V
OUT
= 0.6V, I
Q
= 65µA,
I
SD
<1µA, DFN Package
LTC3410/LTC3410B 300mA (I
OUT
), 2.25MHz, Synchronous Step-Down
DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT
= 0.8V, I
Q
= 26µA, I
SD
<1µA,
SC70 Package
LTC3411 1.25A (I
OUT
), 4MHz, Synchronous Step-Down
DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT
= 0.8V, I
Q
= 60µA,
I
SD
<1µA, MS10, DFN Packages
LTC3531/LTC3531-3/
LTC3531-3.3
200mA (I
OUT
), 1.5MHz, Synchronous Buck-Boost
DC/DC Converter
95% Effi ciency, V
IN
: 1.8V to 5.5V, V
OUT
: 2V to 5V,
I
Q
= 16µA, I
SD
<1µA, ThinSOT, DFN Packages
LTC3532 500mA (I
OUT
), 2MHz, Synchronous Buck-Boost
DC/DC Converter
95% Effi ciency, V
IN
: 2.4V to 5.5V, V
OUT
: 2.4V to 5.25V, I
Q
= 35µA,
I
SD
<1µA, MS10, DFN Packages
LTC3548/LTC3548-1/
LTC3548-2
Dual 400mA and 800mA (I
OUT
), 2.25MHz,
Synchronous Step-Down DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT
= 0.6V, I
Q
= 40µA,
I
SD
<1µA, MS10E, DFN Packages
ThinSOT is a trademark of Linear Technology Corporation
TYPICAL APPLICATIO
U
RELATED PARTS
V
IN
RUN2 RUN1
LTC3547
V
FB2
SW2
SW1
V
FB1
C
F2
, 10pF C
F1
, 10pF
GND
V
IN
2.5V TO 5.5V
V
OUT2
1.8V AT 300mA
V
OUT1
2.5V AT 300mA
3547 TA02
R3
280k
R1
280k
R4
562k
L2
4.7
µH
L1
4.7µH
R2
887k
C
OUT2
4.7µF
C1
4.7
µF
C
OUT1
4.7µF
C1, C2, C3: TAIYO YUDEN JMK316BJ475ML L1, L2: MURATA LQH32CN4R7M33
Dual 300mA Buck Converter
V
IN
RUN2 RUN1
LTC3547-1
V
FB2
SW2
SW1
V
FB1
GND
V
IN
2.5V TO 5.5V
V
OUT2
1.2V AT 300mA
V
OUT1
1.8V AT 300mA
3547 TA03
L2
4.7
µH
L1
4.7µH
C
OUT2
4.7µF
C1
4.7
µF
C
OUT1
4.7µF
C1, C
OUT1
, C
OUT2
: TAIYO YUDEN JMK316BJ475ML
L1, L2: MURATA LQH32CN4R7M33
1.8V/1.2V Dual 300mA Buck Converter