ltc3730 Linear Technology Corporation, ltc3730 Datasheet - Page 28

• Manufacturer Part Number: ltc3730
• Description: 3-phase, 5-bit Intel Mobile Vid, 600khz, Synchronous Buck Controller
• Manufacturer: Linear Technology Corporation

TYPICAL APPLICATIO
RELATED PARTS
LTC3730
PART NUMBER
LTC1628/LTC1628-PG/ 2-Phase, Dual Output Synchronous Step-Down
LTC1628-SYNC
LTC1629/
LTC1629-PG
LTC1702A
LTC1703
LTC1708-PG
LTC1709/
LTC1709-8
LTC1735
LTC1778
LTC1929/
LTC1929-PG
LTC3711
LTC3729
LTC3731
LTC3732
No R
28
SENSE
1/2 Si1034X
Si1034X
453k
is a trademark of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
V
IN
OS
–
887k
–
V
OS
–
VIDI
DPRSLPVR
21.5k
10k
100k
DESCRIPTION
DC/DC Controllers
20A to 200A PolyPhase Synchronous Controllers
No R
Controller
No R
Controller with 5-Bit Mobile VID Control
2-Phase, Dual Synchronous Controller with Mobile VID
High Efficiency, 2-Phase Synchronous Step-Down
Switching Regulators with 5-Bit VID
High Efficiency Synchronous Step-Down
Switching Regulator
No R
Controller
2-Phase Synchronous Controllers
No R
Controller with Digital 5-Bit Interface
20A to 200A, 550kHz PolyPhase Synchronous Controller Expandable from 2-Phase to 12-Phase, Uses all Surface Mount
3-Phase, Synchronizable PolyPhase Controller
3-Phase, 5-Bit VID 600kHz Synchronous Buck Up to 60A VRM 9.0, VID, SSOP-36
●
SYNCHRONIZATION
FAX: [phone]
OPTIONAL FOR
V
SWITCHING FREQUENCY: 300kHz
C
C
SENSE
SENSE
SENSE
SENSE
1000pF
0.01µF
OUT
IN
OUT
100pF
4.99k
6.98k
Figure 15. IMVP III 0.6V to 1.75V, 45A Power Supply for Mobile Northwood CPU
1/2 Si1034X
: SANYO OS-CON 25SP68M
DPRSLPVR
3k
V
OS
: 0.6V TO 1.75V, 45A
: 270µF/2V ×6 PANASONIC SP EEUE0D271R
–
24.3k
1.5nF
TM
2-Phase Dual Synchronous Step-Down
Current Mode Synchronous Step-Down
Current Mode Synchronous Step-Down
191k
2-Phase Dual Synchronous Step-Down
V
5V
5V
RON
100pF
49.9k
S1
S1
S2
S2
S3
S3
U
+
–
+
–
–
+
1000pF
1000pF
1000pF
20k
1%
●
VID1 IN
20k 1%
VID2 IN
27pF
www.linear.com
10
11
12
13
14
15
17
16
18
GAIN
1
2
3
4
5
6
7
8
9
VID1
PLLIN
PLLFLTR
FCB
IN
IN
AMPOUT
EAIN
SGND
SENSE1
SENSE1
SENSE2
SENSE2
SENSE3
SENSE3
I
RUN/SS
VID2
TH
+
–
LTC3730
+
–
+
–
–
+
D1 TO D3: B140A DIODES INC
L1 TO L3: SUMIDA 1µH/20A CEP125 IROMC-H
BOOST1
BOOST2
BOOST3
PGOOD
PGND
VID0
VID4
VID3
SW1
SW2
SW3
TG1
TG2
BG1
BG2
BG3
TG3
V
CC
OR 1µH/19A PANASONIC PCC-D126H
OR TOKO EH125C
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
VID0 IN
VID3 IN
VID4 IN
1µF
0.1µF
5V
COMMENTS
Reduces C
3.5V ≤ V
Expandable from 2-Phase to 12-Phase, Uses All
Surface Mount Components, No Heat Sink, V
550kHz, No Sense Resistor
Mobile Pentium
V
3.5V ≤ V
1.3V ≤ V
Accurate Current Sharing, 3.5V ≤ V
Output Fault Protection, 16-Pin SSOP
I
Up to 42A, Uses All Surface Mount Components,
No Heat Sinks, 3.5V ≤ V
Up to 97% Efficiency, Ideal for Pentium III Processors,
0.925V ≤ V
Components, V
Expanable to 12-Phase, Undervoltage Lockout Input
Up to 97% Efficiency, 4V ≤ V
OUT
0.1µF
0.1µF
IN
5V
PGOOD
≤ 7V
up to 20A
5V
1Ω
IN
IN
OUT
IN
≤ 36V, I
≤ 36V, VID Sets V
OUT
47k
≤ 3.5V, Current Mode Ensures
and C
≤ 2V, 4V ≤ V
IN
®
M1
M2
M3
M4
M5
M6
3730 TA02
III Processors, 550kHz,
up to 36V, QFN, SSOP-28
M1, M3, M5: Si7860DP OR HAT2168H
M2, M4, M6: Si7856DP OR HAT2165H
OUT
OUT
5V
V
V
V
IN
IN
IN
, Power Good Output Signal, Synchronizable,
D1
D2
D3
up to 20A, 0.8V ≤ V
IN
L1
L2
L3
≤ 36V
S1
S2
S3
IN
OUT1
IN
+
+
+
0.003Ω
0.003Ω
0.003Ω
≤ 36V, I
≤ 36V, 0.8V ≤ V
© LINEAR TECHNOLOGY CORPORATION 2002
, PGOOD
S1
S2
S3
IN
–
–
–
≤ 36V
OUT
RD/LT 1105 REV A • PRINTED IN USA
up to 20A
OUT
10µF
6.3V
×3
10µF
25V
×5
IN
≤ 5V
up to 36V
OUT
V
+
+
OUT
≤ (0.9)(V
C
68µF
25V
C
IN
OUT
V
V
5V TO 24V
OS
IN
–
IN
),
3730fa