IR3081

www.DataSheet4U.com IR3081 DATA SHEET XPHASETM VR 10.0 CONTROL IC DESCRIPTION The IR3081 Control IC combined with an IR XPhaseTM Phase IC provides a full featured and flexible way to implement a complete 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 XPhaseTM 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 compatible 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) +/-300mV Differential Remote Sense Programmable 150kHz 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 DataSheet4U.com Operates from 12V input with 9.1V Under-Voltage Lockout 6.8V/5mA Bias Regulator provides System Reference Voltage Enable Input Small thermally enhanced 28L MLPQ package DataShee 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 VI...