LTC1706-63 Datasheet, PDF (1/8 Pages) Linear Integrated Systems – 5-Bit VID Voltage Programmer for Sun CPUs

LTC1706-63
5-Bit VID Voltage
Programmer for Sun CPUs
FEATURES
■ _{Programs Regulator Output Voltage Range from}
1.025V to 1.4125V in 12.5mV 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}
U
APPLICATIO S
■ _Sun^TM _{Processor Power Supply}
■ _{Workstations and Servers}
■ _{Large Memory Array Supply}
DESCRIPTIO
The LTC^®1706-63 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 1.025V and 1.4125V
is programmed in 12.5mV increments.
The LTC1706-63 is designed specifically to program
an entire family of Linear Technology DC/DC converters
with on board 0.6V references. Please see the related parts
list at the end of the data sheet.
For a 2-phase synchronous controller with on-board
LTC1706-63, see the LTC3819.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
FROM
µP
5-Bit VID-Controlled High Current Application (Simplified Block Diagram)
VID0 ^VCC
VID1
SENSE
VID2 LTC1706-63
VID3
FB
VID4 GND
V_IN
4.5V TO 22V
V_IN
LTC1629-6 TG1
SW1
L1 R_SENSE1
INTV_CC
BG1
V_DIFFOUT
PGND
V_IN
SGND
TG2
EAIN
SW2
I_TH
BG2
L2 R_SENSE2
V_IN
4.5V TO 22V
V_OUT
1.025V TO 1.4125V
+
UP TO 80A
C_OUT
V_IN
LTC1629-6 TG1
SW1
BG1
SGND
EAIN
I_TH
PGND
TG2
SW2
BG2
L3 RSENSE3
V_IN
L4 R_SENSE4
1706-63 TA01
170663f
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