IR3552

40A Integrated PowIRstage

®

www.irf.com | © 2014 International Rectifier

February 19, 2014 | FINAL

7

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

PWM Input Current High

-

-1

-

mA

Minimum Recognized PWM Pulse Width

MinPWM

IR ATL and Tri-State Modes

-

20

-

ns

VINDIV

Divider Ratio

VDIV

(VIN-LGND)/VINDIV

-

14

-

V/V

VINDIV Total Divider Resistance

-

462

-

kΩ

Fault Pull Down Resistance

-

300

-

ohm

Enable Input – EN

Input Voltage High

1.15

2

2.7

V

Input Voltage Low

0.54

0.8

1.2

V

Input Resistance

Referenced To LGND

-

500

-

kΩ

Thermal Warning - TFAULT Output

Over Temperature Threshold

OT

-

150

-

°C

Over Temperature Hysteresis

-

-20

-

°C

TFAULT Source Current

V(TFAULT)=2.4V

0.45

1.5

5

mA

TFAULT Output High Voltage

2.4

3.2

3.6

V

Input Resistance

Referenced To LGND

-

25

-

kΩ

Bootstrap Diode

Forward Voltage

I(BOOST) = 35mA

-

595

-

mV

VCC & VDRV Under Voltage Lockout

VCC Rising Threshold for POR

-

3.90

4.20

V

VCC Falling Threshold for POR

-

3.40

-

V

VDRV Rising Threshold for POR

-

3.80

4.20

V

VDRV Falling Threshold for POR

-

3.35

-

V

General

Supply Bias Current Off

EN=0V

-

0.6

5

uA

VDRV Supply Bias Current

Cycle, VDRV=5V

-

12.5

-

mA

PWM Float

-

85

-

uA

PWM Float

-

140

-

uA

VCC Supply Bias Current

ATL PWM Mode, PWM

Float

0.2

0.48

1.2

mA

Tri-state PWM Mode, PWM

Float

0.2

0.43

1.2

mA

Notes

1. Guaranteed by design but not tested in production

2. Applies to IR3552 4mm x 6mm Package on IR approved PCB layout. Controller loss and Inductor loss are not included.