LTC3738 Datasheet, PDF (32/32 Pages) Linear Technology – 3-Phase Buck Controller for Intel VRM9/VRM10 with Active Voltage Positioning

LTC3738
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC1628/LTC1628-PG/
LTC1628-SYNC
LTC1629/
LTC1629-PG
LTC1702
2-Phase, Dual Output Synchronous Step-Down
DC/DC Controllers
20A to 200A PolyPhase Synchronous Controllers
No R_SENSE^TM 2-Phase Dual Synchronous Step-Down
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
Expandable from 2-Phase to 12-Phase, Uses All
Surface Mount Components, No Heat Sink, V_IN up to 36V
550kHz, No Sense Resistor
LTC1703
LTC1708-PG
LT^®1709/
LT1709-8
LTC1735
No R_SENSE 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
Switching Regulator
Mobile Pentium^® III Processors, 550kHz,
V_IN ≤ 7V
3.5V ≤ V_IN ≤ 36V, VID Sets V_OUT1, PGOOD
1.3V ≤ V_OUT ≤ 3.5V, Current Mode Ensures
Accurate Current Sharing, 3.5V ≤ V_IN ≤ 36V
Output Fault Protection, 16-Pin SSOP
LTC1736
LTC1778
LTC1929/
LTC1929-PG
LTC3708
High Efficiency Synchronous Controller with 5-Bit Mobile
VID Control
No R_SENSE Current Mode Synchronous Step-Down
Controller
2-Phase Synchronous Controllers
2-Phase, Dual DC/DC Synchronous Buck Controller with
Output Tracking
Output Fault Protection, 24-Pin SSOP,
3.5V ≤ V_IN ≤ 36V
Up to 97% Efficiency, 4V ≤ V_IN ≤ 36V, 0.8V ≤ V_OUT ≤ (0.9)(V_IN),
I_OUT up to 20A
Up to 42A, Uses All Surface Mount Components,
No Heat Sinks, 3.5V ≤ V_IN ≤ 36V
Tracks Two or More Supplies, Fast Transient Response, No R_SENSE
LTC3711
LTC3717
LTC3719
No R_SENSE Current Mode Synchronous Step-Down
Controller with Digital 5-Bit Interface
DDR/QDR Memory Termination Regulator
2-Phase, 5-Bit VID Current Mode, High Efficiency
Synchronous Step-Down Controller
Up to 97% Efficiency, Ideal for Pentium III Processors,
0.925V ≤ V_OUT ≤ 2V, 4V ≤ V_IN ≤ 36V, I_OUT up to 20A
V_OUT = 0.5V_IN, ±20A, ±0.65% V_OUT Accuracy
AMD Hammer-K8 Processors, Wide V_IN Range: 4V to 36V Operation
LTC3729
LTC3731
LTC3732
20A to 200A, 550kHz PolyPhase Synchronous Controller
3-Phase, 600kHz Synchronous Buck
Switching Regulator Controller
3-Phase, 5-Bit VID, 600kHz Synchronous Buck
Switching Regulator Controller
Expandable from 2-Phase to 12-Phase, Uses all Surface Mount
Components, V_IN up to 36V
Expandable from 3-Phase to 12-Phase, Uses all Surface Mount
Components, V_IN up to 36V
VRM9.0 and VRM9.1 (VID = 1.1V to 1.85V)
LTC3733
3-Phase, 5-Bit VID, 600kHz Synchronous Buck
Switching Regulator Controller
AMD Opteron^TM (VID = 0.8V to 1.55V)
LTC3734
Single Phase DC/DC Controller for Intel IMVP-4
Compatible Processors
6-Bit IMVP-4 VID: 0.7V ≤ V_OUT ≤ 1.708V, 4V ≤ V_IN ≤ 30V, I_OUT ≤ 25A,
Lossless Voltage Positioning
LTC3735
2-Phase DC/DC Controller for Pentium (Centrino)
Processors
40A, 0.7V ≤ V_OUT ≤1.708V, 4V ≤ V_IN ≤ 30V
No R_SENSE is a trademark of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation.
Opteron is a trademark of AMD Corporation.
32 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3738f
LT/TP 0604 1K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2004