LTC3731 Linear Technology, LTC3731 Datasheet - Page 32

• Manufacturer Part Number: LTC3731
• Description: Synchronous Buck Switching Regulator Controller
• Manufacturer: Linear Technology

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LTC3731
RELATED PARTS
PART NUMBER
LTC1628/LTC3728
LTC1629/LTC3729
LTC1702
LTC1703
LTC1708-PG
LT
LT1709-8
LTC1735
LTC1736
LTC1778
LTC1929/
LTC1929-PG
LTC3711
LTC3729
LTC3730
LTC3732
LTC3733
LTC3734/LTC3735
LTC3778
LTC3832
LTC4008
No R
Corporation. Opteron is a trademark of AMD Corporation.
32
®
1709/
SENSE
is a trademark of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation. Centrino is a trademark of Intel
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
2-Phase, Dual Output Synchronous Step-Down
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
High Efficiency, Synchronous Controller with 5-Bit Mobile Output Fault Protection, 24-Pin SSOP,
VID Control
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
IMVP III 3-Phase Synchronous Controller
VRM 9.0/9.1 3-Phase DC/DC Synchronous Step-Down
Controller
AMD Opteron™ CPU, DC/DC Synchronous Step-Down
Controller
Intel Pentium M (Centrino™) CPU, DC/DC Synchronous
Step-Down Controller
Optional R
Controller
Low V
4A Multichemistry Multicell Battery Charger
●
FAX: [phone]
SENSE
SENSE
SENSE
SENSE
IN
High Power Synchronous Controller
SENSE
TM
2-Phase Dual Synchronous Step-Down
Current Mode Synchronous Step-Down
Current Mode Synchronous Step-Down
2-Phase Dual Synchronous Step-Down
Current Mode Synchronous Step-Down
●
www.linear.com
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
3.5V ≤ V
Up to 97% Efficiency, 4V ≤ V
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
I
1.1V ≤ V
3-Phase Operation, up to 60A, 0.8V ≤ V
25A/40A, 4.5V ≤ V
4V ≤ V
V
NiCd, NiMH, Lead Acid, Li-Ion Batteries; 6V ≤ V
1.19V ≤ V
OUT
OUT
IN
OUT
≤ 7V
up to 20A
up to 60A, 0.6V ≤ V
≥ 0.6V, I
IN
IN
IN
OUT
IN
OUT
≤ 36V, Adjustable Frequency up to 1.2MHz, TSSOP-20
OUT
IN
≤ 36V, I
≤ 36V, VID Sets V
≤ 36V
OUT
≤ 3.5V, Current Mode Ensures
≤ 1.85V, 4.5V ≤ V
and C
OUT
≤ 28V
≤ 2V, 4V ≤ V
IN
®
III Processors, 550kHz,
up to 36V
≤ 20A, 3V ≤ V
IN
OUT
OUT
≤ 36V
, Power Good Output Signal, Synchronizable,
up to 20A, 0.8V ≤ V
IN
OUT
≤ 36V
IN
≤ 1.75V, Integrated MOSFET Drivers
OUT1
IN
≤ 36V, I
IN
≤ 36V, 0.8V ≤ V
© LINEAR TECHNOLOGY CORPORATION 2003
IN
≤ 32V, SSOP-36
, PGOOD
≤ 8V
IN
≤ 36V
OUT
OUT
LT/TP 1204 1K • PRINTED IN USA
up to 20A
OUT
≤ 1.55V
IN
≤ 5V
up to 36V
OUT
IN
≤ 28V;
≤ (0.9)(V
IN
),
3731fa