LTC1706EMS-81 Linear Technology, LTC1706EMS-81 Datasheet

IC VID VOLTAGE PROGRAMMER 10MSOP

LTC1706EMS-81

Manufacturer Part Number
LTC1706EMS-81
Description
IC VID VOLTAGE PROGRAMMER 10MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1706EMS-81

Applications
VID Voltage Programmer
Voltage - Supply
2.7 V ~ 5.5 V
Current - Supply
0.1µA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Voltage - Input
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1706EMS-81
Manufacturer:
LT
Quantity:
10 000
FEATURES
APPLICATIO S
TYPICAL
Programs Regulator Output Voltage Range from
1.3V to 2.05V in 50mV Steps and from 2.1V to 3.5V
in 100mV Steps (VRM 8.4)
Programs a Wide Range of Linear Technology
DC/DC Converters with a 0.8V Reference
Fully Compliant with the Intel Pentium
Desktop VID Specification
Built-In 40k Pull-Up Resistors on VID Inputs
Available in MSOP-10 Package
Intel Pentium II and III Processor Power Supply
AMD Athlon
Workstations and Servers
Large Memory Array Supply
0.25% Accurate Output Voltage
FROM
APPLICATION
TM
P
Processor Power Supply
U
5-Bit VID-Controlled High Current 4-Phase Application (Simplified Block Diagram)
VID0
VID1
VID2
VID3
VID4
LTC1706-81
GND
V
CC
SENSE
U
FB
®
Processor
INTV
V
SGND
EAIN
SGND
EAIN
DIFFOUT
CC
LTC1629
LTC1629
PGND
PGND
SW1
SW2
SW1
SW2
BG1
BG2
BG1
BG2
TG1
TG2
TG1
TG2
V
V
IN
IN
DESCRIPTIO
The LTC
resistive ladder which adjusts the output of any 0.8V
referenced regulator. Depending on the state of the five
VID inputs, an output voltage between 1.3V and 3.5V is
programmed in 50mV and 100mV increments.
The LTC1706-81 is designed specifically to program
an entire family of Linear Technology DC/DC converters in
full compliance with the Intel Desktop (VRM 8.4) VID
specification.
The LTC1706-81 programs the following Linear
Technology DC/DC converter products: LTC1622,
LTC1628, LTC1629, LTC1702, LTC1735, LTC1735-1,
LTC1772 and LTC1929. (Consult factory for future com-
patible DC/DC converter products.)
Pentium is a registered trademark of Intel Corporation.
AMD Athlon is a trademark of Advanced Micro Devices, Inc.
4.5V TO 22V
, LTC and LT are registered trademarks of Linear Technology Corporation.
4.5V TO 22V
V
IN
V
IN
®
1706-81 is a precision, digitally programmed,
V
V
IN
IN
Voltage Programmer
L2
L3
L4
L1
R
R
R
R
U
5-Bit Desktop VID
SENSE1
SENSE2
SENSE3
SENSE4
1706-81 TA01
+
C
OUT
V
1.3V TO 3.5V
UP TO 70A
LTC1706-81
OUT
1

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LTC1706EMS-81 Summary of contents

Page 1

... Technology DC/DC converter products: LTC1622, LTC1628, LTC1629, LTC1702, LTC1735, LTC1735-1, LTC1772 and LTC1929. (Consult factory for future com- patible DC/DC converter products.) , LTC and LT are registered trademarks of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation. AMD Athlon is a trademark of Advanced Micro Devices, Inc ...

Page 2

... Note 4: Each built-in pull-up resistor attached to the VID inputs also has a series diode connected to V supply without damage or clamping. (See Operation section for further details INFORMATION ORDER PART NUMBER TOP VIEW GND LTC1706EMS- VID4 6 SENSE MS10 PART MARKING = 120 C/ W LTLR JA MIN TYP MAX 2 ...

Page 3

W U TYPICAL PERFORMANCE CHARACTERISTICS Typical Error % vs Output Voltage 0. VID4 = 0 VID4 = 1 –0.25 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 OUTPUT VOLTAGE (V) ...

Page 4

LTC1706- PIN FUNCTIONS VID0 (Pin 1): LSB Programming Input. Low = GND, High = V or Float. Grounding VID0 adds 50mV CC (VID4 = LOW) or 100mV (VID4 = HIGH) to the output sense voltage. VID1 (Pin ...

Page 5

W BLOCK DIAGRA V CC 40k VID0 40k VID1 40k VID2 40k VID3 4 U OPERATIO The LTC1706- precision resistive divider designed specifically for use with an entire family ...

Page 6

LTC1706-81 U OPERATIO Table 1. VID Inputs and Corresponding Output Voltage CODE VID4 VID3 VID2 VID1 10000 Float GND GND GND 10001 Float GND GND GND 10010 Float GND GND Float 10011 Float GND GND Float 10100 Float GND Float ...

Page 7

... INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 8

... High Efficiency Synchronous Step-Down Controller with 5-Bit VID LTC1772 SOT-23 Low Voltage Step-Down Controller LTC1929 2-Phase Synchronous Step-Down Controller Burst Mode, PolyPhase and No R are trademarks of Linear Technology Corporation. SENSE Linear Technology Corporation 8 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com ...

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