LTC1706-81 Datasheet | Linear Technology

LTC1706-81 5-Bit Desktop VID Voltage Programmer Features s DESCRIPTIO s s s s s Programs Regulator Output Voltage Range from 1.3V to 2.05V in 50m V Steps and from 2.1V to 3.5V in 100m V Steps (VRM 8.4) Programs a Wide Range of Linear Technology DC/DC Converters with a 0.8V Reference Fully pliant 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 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 50m V and 100m V increments. The LTC1706-81 is designed specifically to program an entire family of Linear Technology DC/DC converters in full pliance 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 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. U APPLICATIO S s s s s Intel Pentium II and III Processor Power Supply AMD Athlon TM Processor Power Supply Workstations and Servers Large Memory Array Supply TYPICAL APPLICATION 5-Bit VID-Controlled High Current 4-Phase Application (Simplified Block Diagram) VIN 4.5V TO 22V VIN LTC1629 VID0 VID1 FROM µP VCC SENSE TG1 SW1 INTVCC VDIFFOUT SGND FB GND EAIN TG2 SW2 BG2 VIN 4.5V TO 22V VIN LTC1629 TG1 SW1 BG1 PGND SGND EAIN TG2 SW2 BG2 1706-81 TA01 L1 RSENSE1 BG1 PGND VIN VID2 LTC1706-81 VID3 VID4 L2 RSENSE2 L3 RSENSE3 L4 RSENSE4 + VOUT 1.3V TO 3.5V UP TO 70A...