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IR3081-IR3081M-IR3081MTR
XPHASE VR 10.0 Control IC. The Control IC combined with an IR XPhase TM Phase IC provides a full featured and flexible way toimplement a complete VR 10.0 power solution.
International
19R Rectifier 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 VCCVIDNTT 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
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
PACKAGE PINOUT
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', VID5 BBFB -20
3, VIDO IR3081 EAOUT -19
4_ VID1 CONTROL FB _18
ti, VID2 IC VDRP _17
6_ VID3 IIN _16
7_ VID4 U.) OCSET _15
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Page 1 of 20 9/1/03
International
19R Rectifier
IR3081
ORDERING INFORMATION
Device Order Quantity
IR3081MTR 3000 per Reel
IR3081 M 5 per Bag
ABSOLUTE MAXIMUM RATINGS
Operating Junction Temperature... ... ... ... ... ..150°C
Storage Temperature Range ...................... -65°C to 150°C
ESD Rating ............................................. HBM Class IC JEDEC standard
PIN NAME
VIDO-5
TRM1-4
VOSNS-
RMPOUT
SS/DEL
ENABLE
Page 2 of 20
Do Not Connect
Do Not Connect
-0.31/
-0.31/
-0.31/
-0.31/
ISOURCE
Do Not Connect
Do Not Connect
9/1/03
