LTC3819 Datasheet, PDF (32/32 Pages) Linear Technology – 2-Phase, High Efficiency, Step-Down Controller for Sun Server CPUs

LTC3819
RELATED PARTS
PART NUMBER
LTC1702A /LTC1703
LTC1706-63
LTC1708-PG
LTC1709-7
LTC1735
DESCRIPTION
Dual High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators
5-Bit VID Programmer for SUN Server CPU
Dual High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator
with 5-Bit VID and Power Good Indication
2-Phase High Efficiency Controller with 5-Bit Mobile VID and Power Good
Indication (0.9V ≤ V_OUT ≤ 2V)
High Efficiency Synchronous Step-Down Controller
LTC1736
LTC1778
LTC3716
LTC3717/LTC3831
LTC3719
LTC3728
LTC3729
High Efficiency Synchronous Step-Down Controller with 5-Bit VID
No R_SENSE^TM Synchronous Current Mode Step-Down Controller
2-Phase High Efficiency Controller with 5-Bit VID and Power Good Indication
DDR Memory Termination Regulators (V_TT Supply)
2-Phase High Efficiency Controller for AMD Hammer CPUs
Dual 2-Phase 550kHz Step-Down Synchronous Controller
550kHz PolyPhase Step-Down Synchronous Controller
LTC3732
3-Phase Step-Down Synchronous Controller (VRM 9.0/9.1)
Adaptive Power and No R_SENSE are a trademarks of Linear Technology Corporation.
COMMENTS
500kHz, 25MHz GBW, 3.3V ≤ V_IN ≤ 7V
1.25V ≤ V_OUT ≤ 1.4125V, 125mV Steps
1.3V ≤ V_OUT ≤ 3.5V, Current Mode Ensures
Accurate Current Sharing, 3.5V ≤ V_IN ≤ 36V
Burst Mode Operation and Cycle Skip Low
Current Modes, 3.5V ≤ V_IN ≤ 36V
Burst Mode Operation, 16-Pin Narrow SSOP,
Fault Protection, 3.5V ≤ V_IN ≤ 36V
Output Fault Protection, Power Good, GN-24,
3.5V ≤ V_IN ≤ 36V, 0.925V ≤ V_OUT ≤ 2V
No Sense Resistor Required, 4V ≤ V_IN ≤ 36V,
0.8V ≤ V_OUT ≤ V_IN, SSOP-16
0.6V ≤ V_OUT ≤ 1.75V, I_OUT ≤ 40A
Precision Regulation, Up to 20A, Small PCB Area
0.8V ≤ V_OUT ≤ 1.55V, I_OUT ≤ 40A
Up to 550kHz per Phase, Dual Output, I_OUT ≤ 20A
Up to 550kHz per Phase, Up to 12-Phase
Operation, I_OUT = 20A per Phase
600kHz per Phase, 5-Bit VID, ±5% Accurate
Current Sharing, I_OUT ≤ 60A
32 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3819f
LT 1005 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2005