Power Management Power Control VID Voltage Programmers

LTC1706-81 - 5-Bit Desktop VID Voltage Programmer

Features

  • 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® Processor Desktop VID Specification
  • ±0.25% Accurate Output Voltage
  • Built-In 40k Pull-Up Resistors on VID Inputs
  • Available in MSOP-10 Package

Typical Application

LTC1706-81 Typical Application

Description

The LTC®1706-81 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 1.3V 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 compatible DC/DC converter products.)

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-81#PBF MS-10 MS E 05-08-1661 Yes
LTC1706EMS-81#TRPBF MS-10 MS E 05-08-1661 Yes


LTC1706-81 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-81#PBF MS-10 E $2.35 $2.05 Yes
LTC1706EMS-81#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

  • Intel PentiumII and III Processor Power Supply
  • AMD Athlon™ Processor Power Supply
  • Workstations and Servers
  • Large Memory Array 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