LTC3732CUHF View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC3732CUHF
Linear Technology
LTC3732CUHF Datasheet PDF : 28 Pages
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LTC3732
APPLICATIO S I FOR ATIO
OPTIONAL FOR
SYNCHRONIZATION
1000pF
0.01µF
10k
100Ω, 1%
VID1 IN 1
SYNC IN 2
300kHz 3
14.7k
5V
2N3904
VRON
BAT54
4
5
6
7
27pF
8
9
0.01µF
60.4k
5V
11.8k
330pF
2.2k 3.3nF
S1+
10
S1– 1000pF
11
S2+
12
S2– 1000pF
13
S3–
14
S3+ 1000pF
15
16
17
VID2 IN 18
PIN #s SHOWN ARE FOR THE 36 PIN SSOP PACKAGE
VID1
VID0
PLLIN PGOOD
PLLFLTR BOOST1
FCB
TG1
IN+
SW1
LTC3732
IN–
BOOST2
DIFFOUT
TG2
EAIN
SW2
SGND
SENSE1+
SENSE1–
SENSE2+
SENSE2–
SENSE3–
SENSE3+
VCC
BG1
PGND
BG2
BG3
SW3
TG3
RUN/SS BOOST3
ITH
VID4
VID2
VID3
VCC
36 VID0 IN
35
PGOOD
47k
34
33
0.1µF 1Ω
M1
32
31
VCC
M2
30
0.1µF
29
28
M3
27
26
1µF
10µF
M4
25
24
23
22
M5
21
0.1µF
20
VID4 IN
M6
19
VID3 IN
3732 TA01
VCC
VCC
5V TO 7V
VIN
L1 0.002Ω
D1
S1+
S1–
VIN
L2
0.002Ω
D2
S2+
S2–
VIN
L3
0.002Ω
D3
S3+
S3–
VOUT
10µF +
6.3V
×3
COUT
10µF +
25V
×5
VIN
CIN 3.3V TO 20V
68µF
25V
VIN: 5V TO 20V
VOUT: 1.1V TO 1.85V, 65A
SWITCHING FREQUENCY: 300kHz
CIN: SANYO OS-CON 25SP68M
COUT: 270µF/2V ×6 PANASONIC SP EEFSDOD271R
L1 TO L3: 0.8µH SUMIDA CEP125-0R8
M1, M3, M5: IRF7811W ×2 OR FDS6688 ×2
M2, M4, M6: IRF7822 ×2 OR Si7892DP ×2
Figure 14. VRM9.0/9.1 65A Power Supply for Pentium® 4 Processors
RELATED PARTS
PART NUMBER
LTC1530
LTC1628/LTC1628-PG/
LTC1628-SYNC
LTC1629/LTC1629-PG
LTC1702A
LTC1703
LTC1708-PG
LT®1709/
LT1709-8
LTC1735
LTC1736
LTC1778
LTC1929
LTC3711
LTC3729
LTC3730
LTC3731
LTC3778
DESCRIPTION
High Power Step-Down Synchronous DC/DC Controller
2-Phase, Dual Output Synchronous Step-Down
DC/DC Controllers
20A to 200A PolyPhase Synchronous Controllers
No RSENSETM 2-Phase Dual Sync Step-Down Controller
No RSENSE 2-Phase Dual Synchronous Step-Down
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 Regulator
High Efficiency Synchronous Controller with VID Control
No RSENSE Current Mode Sync Step-Down Controller
2-Phase Synchronous Controllers
No RSENSE Current Mode Synchronous Step-Down
Controller with Digital 5-Bit Interface
20A to 200A, 550kHz PolyPhase Synchronous Controller
3-Phase, 5-Bit Intel Mobile VID
600kHz Synchronous Step-Down Controller
3-Phase 600kHz Synchronous Step-Down Controller
Optional RSENSE Current Mode Synchronous
Step-Down Controller
COMMENTS
High Efficiency 5V to 3.3V Conversion at Up to 15A, SO-8 Package
Reduces CIN and COUT, Power Good Output Signal, Synchronizable,
3.5V ≤ VIN ≤ 36V, IOUT up to 20A, 0.8V ≤ VOUT ≤ 5V
Expandable from 2-Phase to 12-Phase, No Heat Sink, VIN up to 36V
550kHz, No Sense Resistor
Mobile Pentium® III Processors, 550kHz,
VIN ≤ 7V
3.5V ≤ VIN ≤ 36V, VID Sets VOUT1, PGOOD
1.3V ≤ VOUT ≤ 3.5V, Current Mode Ensures
Accurate Current Sharing, 3.5V ≤ VIN ≤ 36V
Output Fault Protection, 16-Pin SSOP
Output Fault Protection, 24-Pin SSOP, 3.5V ≤ VIN ≤ 36V
≤97% Efficiency, 4V ≤ VIN ≤ 36V, 0.8V ≤ VOUT ≤ (0.9) (VIN),
IOUT ≤ 20A
Up to 42A, No Heat Sinks, 3.5V ≤ VIN ≤ 36V
Up to 97% Efficiency, Ideal for Pentium III Processors,
0.925V ≤ VOUT ≤ 2V, 4V ≤ VIN ≤ 36V, IOUT up to 20A
Expandable from 2-Phase to 12-Phase, VIN up to 36V
0.6V ≤ VOUT ≤ 1.75V, IMVP3 Compatible
Up to 60A Output Current, Integrated MOSFET Drivers
0.6V ≤ VOUT ≤ 6V, 4.5V ≤ VIN ≤ 32V
IOUT up to 60A, Integrated MOSFET Drivers
4V ≤ VIN ≤ 36V, Adjustable Frequency up to 1.2MHz,
TSSOP-20 Package
No RSENSE is a trademark of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation.
28 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com
3732f
LT/TP 0503 1K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2002
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