Datasheet

LTC3835-1
28
38351fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
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FAX: [phone]
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www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2006
LT 0208 REV C • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
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
LTC3835-1
L1
3.3μH
0.012Ω
68.1k
38351 TA06
100pF
1200pF
10k
215k
4.7μF
C
B
0.22μF
D
B
CMDSH-3
TG
V
IN
BOOST
SW
C
IN
10μF
39pF
M1, M2: Si7848DD
L1: CDEP 105-3R2M
C
OUT
: SANYO 10TPD150M
Figure 10. High Effi ciency 3.3V, 5A Step-Down Converter
PART NUMBER DESCRIPTION COMMENTS
LTC1628/LTC1628-PG/
LTC1628-SYNC
2-Phase, Dual Output Synchronous Step-Down
DC/DC Controller
Reduces C
IN
and C
OUT
, Power Good Output Signal,
Synchronizable, 3.5V ≤ V
IN
≤ 36V, I
OUT
Up to 20A,
0.8V ≤ V
OUT
≤ 5V
LTC1629/
LTC1629-PG
20A to 200A PolyPhase
®
Synchronous Controllers Expandable from 2-Phase to 12-Phase, Uses All
Surface Mount Components, No Heat Sink, V
IN
Up to 36V
LTC1708-PG 2-Phase, Dual Synchronous Controller with Mobile VID 3.5V ≤ V
IN
≤ 36V, VID Sets V
OUT1
, PGOOD
LT1709/
LT1709-8
High Effi ciency, 2-Phase Synchronous Step-Down
Switching Regulators with 5-Bit VID
1.3V ≤ V
OUT
≤ 3.5V, Current Mode Ensures
Accurate Current Sharing, 3.5V ≤ V
IN
≤ 36V
LTC1735 High Effi ciency Synchronous Step-Down Switching Regulator Output Fault Protection, 16-Pin SSOP
LTC1736 High Effi ciency Synchronous Controller with 5-Bit Mobile
VID Control
Output Fault Protection, 24-Pin SSOP,
3.5V ≤ V
IN
≤ 36V
LTC1778/LTC1778-1 No R
SENSE
Current Mode Synchronous Step-Down
Controllers
Up to 97% Effi ciency, 4V ≤ V
IN
≤ 36V, 0.8V ≤ V
OUT
≤ (0.9)(V
IN
),
I
OUT
Up to 20A
LTC3708 Dual, 2-Phase, DC/DC Controller with Output Tracking Current Mode, No R
SENSE
, Up/Down Tracking, Synchronizable
LTC3711 No R
SENSE
Current Mode Synchronous Step-Down
Controller with Digital 5-Bit Interface
Up to 97% Effi ciency, Ideal for Pentium
®
III Processors,
0.925V ≤ V
OUT
≤ 2V, 4V ≤ V
IN
≤ 36V , I
OUT
Up to 20A
LTC3728 Dual, 550kHz, 2-Phase Synchronous Step-Down
Controller
Dual 180° Phased Controllers, V
IN
3.5V to 35V, 99% Duty Cycle,
5 × 5 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
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
No R
SENSE
is a trademark of Linear Technology Corporation. PolyPhase is a registered trademark of Linear Technology Corporation.