ltc3827ig-1 Linear Technology Corporation, ltc3827ig-1 Datasheet - Page 32

• Manufacturer Part Number: ltc3827ig-1
• Description: Low Iq, Dual, 2-phase Synchronous Step-down Controller
• Manufacturer: Linear Technology Corporation

LTC3827-1
RELATED PARTS
PART NUMBER
LTC1628/LTC1628-PG/ 2-Phase, Dual Output Synchronous Step-Down
LTC1628-SYNC
LTC1735
LTC1778/LTC1778-1
LT1976
LTC3708
LTC3727/LTC3727A-1
LTC3728
LTC3729
LTC3731
LTC3835/LTC3835-1
PolyPhase is a registered trademark of Linear Technology Corporation. No R
32
TYPICAL APPLICATIO
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
1200pF
0.01μF
CSS1
C
0.01μF
ITH1
CSS2
560pF
C
ITH2
C
100pF
ITH1A
C
100pF
ITH2A
R
68.1k
DESCRIPTION
DC/DC Controller
High Efficiency Synchronous Step-Down
Switching Regulator
No R
Controllers
High Voltage Step-Down Switching Regulator
Dual, 2-Phase, DC/DC Controller with Output Tracking
2-Phase Dual Synchronous Controller
Dual, 550kHz, 2-Phase Synchronous Step-Down
Controller
20A to 200A, 550kHz PolyPhase
3- to 12-Phase Step-Down Synchronous Controller
Low I
RA1
10k
ITH1
●
39.2k
RA2
R
35k
FAX: [phone]
ITH2
SENSE
Q
39pF
Synchronous Step-Down Controller
RB1
215k
RB2
353k
Current Mode Synchronous Step-Down
C2
1nF
C1
1nF
U
High Efficiency Dual 3.3V/8.0V Step-Down Converter
I
V
SENSE1
SENSE1
PLLLPF
PLLIN/MODE
SGND
RUN1
RUN2
SENSE2
SENSE2
V
I
TRACK/SS2
TH1
TH2
FB1
FB2
●
LTC3827-1
www.linear.com
+
–
–
+
TRACK/SS1
®
PGOOD1
BOOST1
BOOST2
EXTV
Synchronous Controller
INTV
SENSE
PGND
MTOP1, MTOP2, MBOT1, MBOT2: Si7848DP
L1: CDEP105-3R2M
L2: CDEP105-7R2M
C
SW1
SW2
TG1
BG1
BG2
TG2
OUT1
V
CC
CC
IN
is a trademark of Linear Technology Corporation.
, C
OUT2
= SANYO 10TPD150M
D1
D2
CB1 0.47μF
0.47μF
C
1μF
CB2
INT2
100k
R2
COMMENTS
Reduces C
Output Fault Protection, 16-Pin SSOP Package
I
3.3V ≤ V
Current Mode, No R
0.8V ≤ V
Dual 180° Phased Controllers, V
5mm × 5mm QFN and SSOP-28 Packages
Expandable from 2-Phase to 12-Phase, Uses All Surface Mount
Components, V
60A to 240A Output Current, 0.6V ≤ V
Single Channel LTC3827/LTC3827-1
Up to 97% Efficiency, 4V ≤ V
3.5V ≤ V
OUT
Up to 20A
+
C
4.7μF
INT1
IN
OUT
IN
IN
≤ 60V, 100μA Quiescent Current
≤ 36V, I
≤ 14V, 4V ≤ V
and C
MTOP1
MBOT1
MTOP2
MBOT2
IN
Up to 36V
OUT
1.5μH
7.2μH
OUT
SENSE
L1
L2
, Power Good Output Signal, Synchronizable,
10μF
C
IN1
Up to 20A, 0.8V ≤ V
, Up/Down Tracking, Synchronizable
IN
RSNS1
RSNS2
15mΩ
5mΩ
38271 TA06
IN
≤ 36V
10μF
C
≤ 36V, 0.8V ≤ V
© LINEAR TECHNOLOGY CORPORATION 2005
IN2
IN
3.5V to 35V, 99% Duty Cycle,
C
150μF
OUT
OUT1
x 2
150μF
C
OUT2
LT 0807 REV D • PRINTED IN USA
≤ 6V, 4.5V ≤ V
OUT
12V
V
V
V
3.3V
10A
OUT1
IN
OUT2
8V
2A
OUT
≤ 5V
≤ (0.9)(V
IN
≤ 32V
IN
),
38271fd