LTC3412
U
TYPICAL APPLICATIO
2.5V, 2.5A Step-Down Regulator Synchronized to 1.25MHz
V
IN
2.7V TO 5.5V
C
**
IN3
100μF
C1 22pF X5R
R1 392k
C
IN1
22μF
1
16
SV
IN
PV
IN
X5R 6.3V
R
PG
100k
2
3
15
14
13
12
11
10
9
PGOOD
PGOOD
SW
SW
R
ITH
15k
C
ITH
1000pF X7R
I
TH
LTC3412
C
C
100pF
L1*
PGND
PGND
SW
1μH
V
OUT
4
5
V
FB
2.5V
2.5A
R2 182k
309k
R
T
R
OSC
6
7
C
**
1.25MHz
EXT CLOCK
OUT1
R
SS
4.7M
SYNC/MODE
RUN
100μF
SW
C
SS
470pF X7R
8
SGND
PV
IN
C
IN2
22μF
X5R 6.3V
GND
3412 TA02
*TOKO D62CB A920CY-1ROM
**TDK C4532X5R0J107M
RELATED PARTS
PART NUMBER
LTC1701/LTC1701B
LTC1772/LTC1772B
LTC1773
DESCRIPTION
COMMENTS
700mA (I ), 1MHz Step-Down Converter
V
IN
V
IN
V
IN
= 2.5V to 5V, B Version: Burst Mode Defeat, ThinSOTTM
OUT
Constant 550kHz Current Mode Step-Down DC/DC Controller
Constant Frequency 550kHz Step-Down DC/DC Controller
= 2.5V to 9.8V, 94% Efficiency, 100% Duty Cycle, ThinSOT
= 2.65V to 8.5V, 95% Efficiency, V
from 0.8V to V ,
IN
OUT
MSOP-10
LTC1875
1.5A (I ), 500kHz Synchronous Step-Down Converter
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
= 2.65V to 6V, 95% Efficiency, PLL, SSOP-16
= 2.65V to 10V, 95% Efficiency, MSOP-8
= 2.65V to 6V, 95% Efficiency, MSOP-8
= 2.65V to 10V, 95% Efficiency, SSOP-16
= 2.65V to 6V, 95% Efficiency, MSOP-8
= 2.65V to 6V, 96% Efficiency, ThinSOT Package
= 2.5V to 5.5V, 95% Efficiency, ThinSOT,
OUT
LTC1877
600mA (I ), 500kHz Synchronous Step-Down Converter
OUT
LTC1878
600mA (I ), 550kHz Synchronous Step-Down Converter
OUT
LTC1879
1.2A (I ), 550kHz Synchronous Step-Down Converter
OUT
LTC3404
600mA (I ), 1.4MHz Synchronous Step-Down Converter
OUT
LTC3405A
LTC3406/LTC3406B
300mA (I ), 1.5MHz Synchronous Step-Down Converter
OUT
600mA (I ), 1.5MHz Synchronous Step-Down Converter
OUT
B Version: Burst Mode Defeat
LTC3411
1.25A (I ), 4MHz Synchronous Step-Down Converter
V
IN
= 2.5V to 5.5V, 95% Efficiency, MSOP-10
OUT
ThinSOT is a trademark of Linear Technology Corporation.
3412fb
LT 0707 REV B • PRINTED IN USA
20 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
●
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2002
Linear [ Linear ]
