IR3081 Datasheet | International Rectifier

DESCRIPTION The IR3081 Control IC bined with an IR XPhase TM Phase IC provides a full featured and flexible way to implement a plete VR 10.0 power solution. The “Control” IC provides overall system control and interfaces with any number of “Phase ICs” which each drive and monitor a single phase of a multiphase converter. The XPhase TM architecture results in a power supply that is smaller, less expensive, and easier to design while providing higher efficiency than conventional approaches. The IR3081 is intended for VRD or VRM/EVRD 10.0 applications that use external VCCVID/VTT circuits. FEATURES - - - - - - - - - - - - - 6 bit VR 10.0 patible VID with 0.5% overall system accuracy Programmable Dynamic VID Slew Rate No Discharge of output capacitors during Dynamic VID step-down (can be disabled) +/-300m V Differential Remote Sense Programmable 150k Hz to 1MHz oscillator Programmable VID Offset and Load Line output impedance Programmable Softstart Programmable Hiccup Over-Current Protection with Delay to prevent false triggering Simplified Powergood provides indication of proper operation and avoids false triggering . Operates from 12V input with 9.1V Under-Voltage Lockout 6.8V/5m A Bias Regulator provides System Reference Voltage Enable Input Small thermally enhanced 28L MLPQ package Data Shee PACKAGE PINOUT 28 27 26 25 24 ENABLE PWRGD 23 LGND SS/DEL RMPOUT VCC N/C 22 1 2 3 4 5 6 7 OSCDS VID5 VID0 VID1 VID2 VID3 VBIAS BBFB 21 20 19 18 17 16 15 IR3081 CONTROL IC VOSNS- EAOUT FB VDRP IIN OCSET VID4 TRM1 TRM2 ROSC 13 TRM3 TRM4 . Page 1 of 20 . Data Sheet 4 U . VDAC 9/1/03 .. ORDERING INFORMATION Device IR3081MTR IR3081M Order Quantity 3000 per Reel 5 per Bag ABSOLUTE MAXIMUM RATINGS Operating Junction Temperature……………..150o C Storage Temperature Range………………….-65o C to 150o C ESD Rating………………………………………HBM Class 1C JEDEC standard...