LTC3853 Datasheet, PDF (36/36 Pages) Linear Technology – Triple Output, Multiphase Synchronous Step-Down Controller

LTC3853
RELATED PARTS
PART NUMBER DESCRIPTION
COMMENTS
LTC1625/
LTC1775
No R_SENSE^TM Current Mode Synchronous Step-Down Controllers 97% Efficiency, 99% Duty Cycle
LTC1735
High Efficiency Synchronous Step-Down Switching Regulator
Output Fault Protection, 16-Pin SSOP
LTC1778
LTC3727A-1
LTC3728
No R_SENSE Wide Input Range Synchronous Step-Down Controller
Dual, 2-Phase Synchronous Controller
2-Phase 550kHz, Dual 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
Very Low Dropout; V_OUT ≤ 14V, 4V ≤ V_IN ≤ 36V
QFN and SSOP Packages, High Frequency for Smaller L and C
LTC3729
20A to 200A PolyPhase^® Synchronous Controllers
Expandable from 2-Phase to 12-Phase, Uses All Surface Mount
Components
LTC3731
3-Phase, Single Output From 250kHz to 600kHz Synchronous
Step-Down Controller
0.6V ≤ V_OUT ≤ 6V, 4.5V ≤ V_IN ≤ 32V, I_OUT ≤ 60A,
Integrated MOSFET Drivers
LTC3773
LTC3810
Triple Output DC/DC Synchronous Controller
3-Phase Step-Down DC/DC Controller,
3.3V ≤ V_IN ≤ 36V, Fixed Frequency 160kHz to 700kHz
100V Current Mode Synchronous Nonisolated Switching Regulator 6.2V ≤ V_IN ≤ 100V, No R_SENSE, Synchronizable with Tracking
Controller
LTC3811
LTC3826
LTC3828
LTC3834/
LTC3834-1
Dual, PolyPhase Synchronous Step-Down Controller, 20A to 200A
Low I_Q, Dual, 2-Phase Synchronous Step-Down Controller
Dual, 2-Phase Synchronous Step-Down Controller with Tracking
Low I_Q, Synchronous Step-Down Controller
Differential Remote Sense Amplifier, R_SENSE or DCR Current Sense
30μA I_Q, 0.8V ≤ V_OUT ≤ 10V, 4V ≤ V_IN ≤ 36V
Up to Six Phases, 0.8V ≤ V_OUT ≤ 7V, 4.5V ≤ V_IN ≤ 28V
30μA I_Q, 0.8V ≤ V_OUT ≤ 10V, 4V ≤ V_IN ≤ 36V
LT3845
Low I_Q, High Voltage Single Output Synchronous Step-Down
DC/DC Controller
1.23V ≤ V_OUT ≤ 36V, 4V ≤ V_IN ≤ 60V, 120μA I_Q
LTC3850
Dual 2-Phase Synchrounous Controller
2-Phase Version of LTC3853 in a 28-Lead 4mm × 4mm QFN,
4mm × 5mm QFN or 28-Lead SSOP Narrow
LTC3851
No R_SENSE Wide Input Range Step-Down Controller
4V ≤ V_IN ≤ 38V, Very Low Dropout with Tracking
PolyPhase is a registered trademark of Linear Technology Corporation. No R_SENSE is a trademark of Linear Technology Corporation.
36 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3853f
LT 0808 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2008