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Data Sheet No. PD 94716

IR3094PBF

3 PHASE PWM CONTROLLER FOR POINT OF LOAD

DESCRIPTION

The IR3094 Control IC provides a full featured, cost effective, single chip solution to offers a compact,

efficient solution for high current POL converters. Control and 3 Phase Gate Drive functions are integrated

into a single space-saving IC.

FEATURES

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

0.85V Reference Voltage

3A GATELX Pull Down Drive Capability

Programmable 100KHz to 540KHz oscillator

Programmable Voltage Positioning (can be disabled)

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 up to 16V converter input with 7.5V Under-Voltage Lockout

4.36V Under-Voltage Lockout threshold for gate driver voltage

Adjustable Voltage, 150mA Bias Regulator provides MOSFET Drive Voltage

Enable Input

OVP Flag Output detects high side fet short at powerup

Separate OVP sense line to sense the output voltage and latched OVP with protection

Inductor DCR sensing for current sensing will support up to 5.1V output applications

Available 48L MLPQ package

ORDERING INFORMATION

Device

Order Quantity

IR3094MTRPBF

3000 per Reel

IR3094MPBF

100 piece strips

PACKAGE INFORMATION

NC

NC

ROSC

VOSNS-

OCSET

VREF

VDRP

FB

EAOUT

SS/DEL

SCOMP2

SCOMP3

NC

NC

NC

NC

5VREF

OVPSNS

ENABLE

OVP

CSINP1

CSINM1

NC

VCCH1

IR3094

48LD MLPQ

GATEH1

PGND1

GATEL1

VCCL1_2

5VUVL

GATEL2

PGND2

GATEH2

VCCH2

VCCH3

GATEH3

PGND3

48L MLPQ

(7 x 7 mm Body)

o

JA

= 27 C/W

Page 1 of 29

LGND

SETBIAS

VCC

CSINP3

CSINM3

BIASOUT

PWRGD

CSINP2

CSINM2

NC

VCCL3

GATEL3

09/26/05

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