Datasheet

28
LTC3834-1
38341f
PART NUMBER DESCRIPTION COMMENTS
LTC1735 High Efficiency Synchronous Step-Down Switching Regulator Output Fault Protection, 16-Pin SSOP
LTC1778/LTC1778-1 No R
SENSE
Current Mode Synchronous Step-Down Up to 97% Efficiency, 4V V
IN
36V, 0.8V V
OUT
(0.9)(V
IN
),
Controllers I
OUT
Up to 20A
LTC3708 Dual, 2-Phase, DC/DC Controller with Output Tracking Current Mode, No R
SENSE
, Up/Down Tracking, Synchronizable
LTC3727/LTC3727-1 High Efficiency, 2-Phase, Synchronous Step-Down Switching 2-Phase Operation; 4V V
IN
36V, 0.8V V
OUT
14V,
Regulators 99% Duty Cycle, 5mm × 5mm QFN, SSOP-28
LTC3728 Dual, 550kHz, 2-Phase Synchronous Step-Down Dual 180° Phased Controllers, V
IN
3.5V to 35V, 99% Duty Cycle,
Controller 5mm × 5mm QFN Package, SSOP-28
LTC3729 20A to 200A, 550kHz PolyPhase Synchronous Controller Expandable from 2-Phase to 12-Phase, Uses All Surface Mount
Components, V
IN
Up to 36V
LTC3731 3- to 12-Phase Step-Down Synchronous Controller 60A to 240A Output Current, 0.6V V
OUT
6V, 4.5V V
IN
32V
LT3800 High Voltage Synchronous Regulator Controller V
IN
up to 60V, I
OUT
20A, Current Mode, Onboard Bias
Regulator, Burst Mode Operation, 16-Lead TSSOP Package
LTC3826/LTC3826-1 30μA I
Q
, Dual, 2-Phase Synchronous Step-Down Controller 2-Phase Operation; 30μA One Channel No Load I
Q
(50μA Total),
4V V
IN
36V, 0.8V V
OUT
10V
LTC3827/LTC3827-1 Low I
Q
Dual Synchronous Controllers 2-Phase Operation; 115μA Total No Load I
Q
, 4V V
IN
36V
80μA No Load I
Q
with One Channel On
LTC3835/LTC3835-1 Low I
Q
Synchronous Step-Down Controller 80μA No Load I
Q
, 4V V
IN
36V, 0.8V V
OUT
10V
LT3844 High Voltage Current Mode Controller with V
IN
up to 60V, I
OUT
5A Onboard Bias Regulator, Burst Mode
Programmable Operating Frequency Operation, Sync Capability, 16-Lead TSSOP Package
LTC3845 Low I
Q
Synchronous Step-Down Controller 4V V
IN
60V, 1.23V V
OUT
36V, 120μA Quiescent Current
LTC3850 Dual, 2-Phase Synchronous Step-Down DC/DC Controller 2-Phase Operation; 4V V
IN
24V, 95% Efficiency,
No R
SENSE
Option, I
OUT
Up to 20A, 4mm × 4mm QFN
No R
SENSE
is a trademark of Linear Technology Corporation. PolyPhase is a registered trademark of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation.
RELATED PARTS
U
TYPICAL APPLICATIO
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2007
LT 1107 • PRINTED IN USA
Figure 10. High Efficiency 3.3V, 5A Step-Down Converter
V
OUT
3.3V
5A
C
OUT
150μF
0.01μF
V
IN
4V TO 36V
I
TH
SGND
PLLIN/MODE
V
FB
SENSE
+
SENSE
–
PLLLPF
RUN
TRACK/SS
INTV
CC
BG
PGND
LTC3834-1
L1
3.2μH
0.012Ω
68.1k
38341 TA06
150pF
560pF
54k
215k
4.7μF
C
B
0.22μF
D
B
CMDSH-3
TG
V
IN
BOOST
SW
C
IN
10μF
39pF
M1, M2: Si4840DY
L1: CDEP 105-3R2M
C
OUT
: SANYO 10TPD150M