Power Management Power Control VID Voltage Programmers

LTC1706-85 - VID Voltage Programmer for Intel VRM 8.5

Features

  • Fully Compliant with the Intel VRM 8.5 VID Specification
  • Programs Regulator Output Voltage from 1.05V to 1.825V in 25mV Steps
  • Programs an Entire Family of Linear Technology DC/DC Converters with 0.8V References
  • ±0.25% Voltage Programming Accuracy
  • Built-In 40k Pull-Up Resistors on Program Inputs
  • Available in MSOP-10 Packaging

Typical Application

LTC1706-85 Typical Application

Description

The LTC®1706-85 is a precision, digitally programmed 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 1.05V and 1.825V is programmed in 25mV increments.

The LTC1706-85 is designed specifically to program an entire family of Linear Technology DC/DC converters in full compliance with the Intel Voltage Regulator Module(VRM) 8.5 specification.

The LTC1706-85 programs the following Linear Technology DC/DC converter products: LTC1622, LTC1628, LTC1629, LTC1702, LTC1735, LTC1735-1, LTC1772, LTC1773, LTC1778, LTC1929, LTC3728 and LTC3729.

Consult factory for additional DC/DC converter products compatible with the LTC1706-85.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing		 RoHS
LTC1706EMS-85#PBF MS-10 MS E 05-08-1661 Yes
LTC1706EMS-85#TRPBF MS-10 MS E 05-08-1661 Yes


LTC1706-85 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LTC1706EMS-85#PBF MS-10 E $2.35 $2.05 Yes
LTC1706EMS-85#TRPBF MS-10 E $2.11 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Applications

  • Server/Desktop Computers
  • Multiprocessor Workstations and Servers
  • Multiphase Processor Power Supply

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

Models for the following parts are available in LTspice:
LTC1706-19
LTC1706-61
LTC1706-63
LTC1706-81
LTC1706-82
LTC1706-85

Technical Support