IR3553 datasheet(8/22 Pages) IRF

8 / 22 page

November 29, 2012 | FINAL DATASHEET

IR3553

40A Integrated PowIRstage®

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

VCC Supply Current

IVCC

VCC = 4.5V to 7V

8 12

VIN Supply Leakage Current

IVIN

VIN = 20V, 125C, V(PWM) =

Tri‐State

µA

BOOST Supply Current IBOOST

4.75V < V(BOOST)‐V(SW) <

0.5

1.5

3.0

REFIN Bias Current IREFIN

‐1.5

µA

SW Floating Voltage VSW_FLOAT

V(PWM) = Tri‐State

0.2

0.4

SW Pull Down Resistance RSW_PULLDOWN

BBRK# is Low or VCC = 0V

kΩ

Notes

1. Guaranteed by design but not tested in production

2. VIN=12V, VOUT=1.2V, ƒSW = 300kHz, L=210nH (0.2mΩ), VCC=6.8V, CIN=47uF x 4, COUT =470uF x3, 400LFM airflow, no heat sink, 25°C

ambient temperature, and 8‐layer PCB of 3.7” (L) x 2.6” (W). PWM controller loss and inductor loss are not included.

3. VIN=12V, VOUT=1.2V, ƒSW = 400kHz, L=150nH (0.29mΩ), VCC=7V, CIN=47uF x 4, COUT =470uF x3, no airflow, no heat sink, 25°C ambient

temperature, and 8‐layer PCB of 3.7” (L) x 2.6” (W). PWM controller loss and inductor loss are not included.

IR3553 Datasheet(PDF) 8 Page - International Rectifier