LTC3419
16
3419fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2007
LT 0309 REV A • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATIONS
PART NUMBER DESCRIPTION COMMENTS
LTC3405/LTC3405A 300mA I
OUT
, 1.5MHz, Synchronous
Step-Down DC/DC Converters
95% Effi ciency, V
IN(MIN)
= 2.5V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 20μA, I
SD
= <1μA,
ThinSOT
TM
Package
LTC3406/LTC3406B 600mA I
OUT
, 1.5MHz, Synchronous
Step-Down DC/DC Converters
96% Effi ciency, V
IN(MIN)
= 2.5V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 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 Converters
95% Effi ciency, V
IN(MIN)
= 2.5V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40μA, I
SD
= <1μA,
MS10E and DFN Packages
LTC3409 600mA I
OUT
, 1.7MHz/2.6MHz,
Synchronous Step-Down DC/DC
Converter
96% Effi ciency, V
IN(MIN)
= 1.6V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 65μA, I
SD
= <1μA,
DFN Package
LTC3410/LTC3410B 300mA I
OUT
, 2.25MHz, Synchronous
Step-Down DC/DC Converters
95% Effi ciency, V
IN(MIN)
= 2.5V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 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(MIN)
= 2.5V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 60μA, I
SD
= <1μA,
MS10 and DFN Packages
LTC3412 2.5A I
OUT
4MHz, Synchronous
Step-Down DC/DC Converter
95% Effi ciency, V
IN(MIN)
= 2.5V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 60μA, I
SD
= <1μA,
TSSOP-16E Package
LTC3441/LTC3442,
LTC3443
1.2A I
OUT
2MHz, Synchronous
Buck-Boost DC/DC Converters
95% Effi ciency, V
IN(MIN)
= 2.4V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
: 2.4V to 5.25V, I
Q
= 50μA,
I
SD
= <1μA, DFN Package
LTC3531/LTC3531-3/
LTC3531-3.3
200mA I
OUT
, 1.5MHz, Synchronous
Buck-Boost DC/DC Converter
95% Effi ciency, V
IN(MIN)
= 1.8V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
: 2V to 5V, I
Q
= 16μA,
I
SD
= <1μA, ThinSOT and DFN Packages
LTC3532 500mA I
OUT
, 2MHz, Synchronous
Buck-Boost DC/DC Converter
95% Effi ciency, V
IN(MIN)
= 2.4V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
: 2.4V to 5.25V, I
Q
= 35μA,
I
SD
= <1μA, MS10 and DFN Packages
LTC3547/LTC3547B Dual 300mA I
OUT
, 2.25MHz,
Synchronous Step-Down DC/DC
Converters
95% Effi ciency, V
IN(MIN)
= 2.5V, V
IN(MAX)
= 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 Converters
95% Effi ciency, V
IN(MIN)
= 2.5V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
: 0.6V, I
Q
= 40μA, I
SD
= <1μA,
MS10E and DFN Packages
LTC3561 1.25A I
OUT
, 4MHz, Synchronous
Step-Down DC/DC Converter
95% Effi ciency, V
IN(MIN)
= 2.5V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
: 0.8V, I
Q
= 240μA, I
SD
= <1μA,
DFN Package
ThinSOT™ is a trademark of Linear Technology Corporation.
Dual 600mA Buck Converter
V
IN
RUN2 RUN1
LTC3419
V
FB2
SW2
SW1
MODE
V
FB1
C
F2
, 22pF C
F1
, 22pF
GND
V
IN
2.5V TO 5.5V
V
OUT2
1.8V AT
600mA
V
OUT1
2.5V AT
600mA
3419 TA02
R4
118k
R2
187k
R3
59k
R1
59k
L2
3.3
μH
L1
3.3μH
C
OUT2
10μF
C
OUT1
10μF
C1
10
μF
C1, C2, C3: TAIYO YUDEN JMK316BJ106ML L1, L2: TDK VLF3010AT3R3M1RD
1.8V/1.575V Dual 600mA Buck Converter
V
IN
RUN2 RUN1
LTC3419-1
V
FB2
SW2
SW1
MODE
V
FB1
GND
V
IN
2.5V TO 5.5V
V
OUT2
1.8V AT
600mA
V
OUT1
1.575V AT
600mA
3419 TA03
L2
3.3
μH
L1
3.3μH
C
OUT2
10μF
C
OUT1
10μF
C1
10
μF
C1
C2
C3: TAIYO YUDEN JMK316BJ106ML L1
L2: TDK VLF3010AT3R3M1RD
