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LTC1706-61
170661f
5-Bit VID-Controlled High Current Application (Simplified Block Diagram)
5-Bit VID Voltage
Programmer for AMD
Opteron CPUs
■
Programs Regulator Output Voltage Range from
0.8V to 1.55V in 25mV Steps
■
Programs a Wide Range of Linear Technology
DC/DC Converters with a 0.6V Reference
■
±0.35% Accurate Output Voltage
■
Built-In 40k Pull-Up Resistors on VID Inputs
■
Available in MSOP-10 Package
The LTC
®
1706-61 is a precision, digitally programmed,
resistive ladder which adjusts the output of any 0.6V
referenced regulator. Depending on the state of the five
VID inputs, an output voltage between 0.8V and 1.55V is
programmed in 25mV increments.
The LTC1706-61 is designed specifically to program
an entire family of Linear Technology DC/DC converters
with on board 0.6V references.
The LTC1706-61 programs the following Linear
Technology DC/DC converter products: LTC1629-6,
LTC3714, LTC3731 and LTC3778. (Consult factory for
additional DC/DC converter products.)
■
AMD Opteron
TM
Processor Power Supply
■
Workstations and Servers
■
Large Memory Array Supply
, LTC and LT are registered trademarks of Linear Technology Corporation.
1706-61 TA01
L1 R
SENSE1
V
IN
V
IN
4.5V TO 22V
V
IN
4.5V TO 22V
LTC1629-6
INTV
CC
V
DIFFOUT
SGND
EAIN
I
TH
C
OUT
V
IN
TG1
SW1
BG1
PGND
+
V
OUT
0.8V TO 1.55V
UP TO 80A
VID0
VID1
VID2
VID3
VID4
V
CC
LTC1706-61
GND
SENSE
FB
FROM
µP
L2
R
SENSE2
L3
R
SENSE3
V
IN
LTC1629-6
SGND
EAIN
I
TH
V
IN
TG1
SW1
BG1
PGND
L4
R
SENSE4
TG2
SW2
BG2
TG2
SW2
BG2
DESCRIPTIO
U
FEATURES
APPLICATIO S
U
TYPICAL APPLICATIO
U
AMD Opteron is a trademark of Advanced Micro Devices, Inc.
