LTC3731 Datasheet, PDF (32/32 Pages) Linear Technology – 3-Phase, 600kHz, Synchronous Buck Switching Regulator Controller

LTC3731
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC1628/LTC3728
LTC1629/LTC3729
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
LTC3711
LTC3729
LTC3730
LTC3732
High Efficiency, Synchronous Controller with 5-Bit Mobile Output Fault Protection, 24-Pin SSOP,
VID Control
3.5V ≤ V_IN ≤ 36V
No R_SENSE Current Mode Synchronous Step-Down
Controller
Up to 97% Efficiency, 4V ≤ V_IN ≤ 36V, 0.8V ≤ V_OUT ≤ (0.9)(V_IN),
I_OUT up to 20A
2-Phase Synchronous Controllers
Up to 42A, Uses All Surface Mount Components,
No Heat Sinks, 3.5V ≤ V_IN ≤ 36V
No R_SENSE Current Mode Synchronous Step-Down
Controller with Digital 5-Bit Interface
Up to 97% Efficiency, Ideal for Pentium III Processors,
0.925V ≤ V_OUT ≤ 2V, 4V ≤ V_IN ≤ 36V, I_OUT up to 20A
20A to 200A, 550kHz PolyPhase Synchronous Controller Expandable from 2-Phase to 12-Phase, Uses All Surface Mount
Components, V_IN up to 36V
IMVP III 3-Phase Synchronous Controller
I_OUT up to 60A, 0.6V ≤ V_OUT ≤ 1.75V, Integrated MOSFET Drivers
VRM 9.0/9.1 3-Phase DC/DC Synchronous Step-Down 1.1V ≤ V_OUT ≤ 1.85V, 4.5V ≤ V_IN ≤ 32V, SSOP-36
Controller
LTC3733
AMD Opteron™ CPU, DC/DC Synchronous Step-Down 3-Phase Operation, up to 60A, 0.8V ≤ V_OUT ≤ 1.55V
Controller
LTC3734/LTC3735
Intel Pentium M (Centrino™) CPU, DC/DC Synchronous 25A/40A, 4.5V ≤ V_IN ≤ 36V
Step-Down Controller
LTC3778
Optional R_SENSE Current Mode Synchronous Step-Down 4V ≤ V_IN ≤ 36V, Adjustable Frequency up to 1.2MHz, TSSOP-20
Controller
LTC3832
Low V_IN High Power Synchronous Controller
V_OUT ≥ 0.6V, I_OUT ≤ 20A, 3V ≤ V_IN ≤ 8V
LTC4008
4A Multichemistry Multicell Battery Charger
NiCd, NiMH, Lead Acid, Li-Ion Batteries; 6V ≤ V_IN ≤ 28V;
1.19V ≤ V_OUT ≤ 28V
No R_SENSE is a trademark of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation. Centrino is a 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
3731fa
LT/TP 1204 1K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2003