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International Rectifier Electronic Components Datasheet

IR3742 Datasheet

20A Integrated PowIRstage

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20A Integrated PowIRstage®
IR3742
FEATURES
Single input voltage range from 5V to 21V
Wide input voltage range from 1.0V to 21V with
external VCC bias voltage
Integrated MOSFET drivers, Control FET,
Synchronous FET with Schottky diode,
bootstrap diode and the internal LDO
Enable input with voltage monitoring capability
Logic Level Tri-state PWM input
Thermally compensated Over Current Indicator
Open-drain over temperature and over current
fault indication
Under-voltage Lockout of VCC/LDO_Out
Operating temp: -40°C < Tj < 125°C
Package size: 5mm x 6mm PQFN
RoHS6 Compliant, lead-free and halogen-free
DESCRIPTION
The IR3742 integrated PowIRstage® is a synchronous
buck gate driver IC with co-packed control and
synchronous MOSFETs and Schottky diode. It is
optimized internally for PCB layout, heat transfer and
driver/MOSFET timing. Custom designed gate driver
and MOSFET combination enables higher efficiency at
lower output voltages required by cutting edge ASIC,
FPGA and advanced controller.
Up to 1.5MHz switching frequency enables high
performance transient response, allowing
miniaturization of output inductors, as well as input and
output capacitors while maintaining industry leading
efficiency. The IR3742’s superior efficiency enables
smallest size and lower solution cost.
The IR3742 includes an over current indicator and over
temperature indicator in the event of a fault condition.
APPLICATIONS
Computing Applications
Set Top Box Applications
Storage Applications
Data Center Applications
Distributed Point of Load Power Architectures
ORDERING INFORMATION
Base Part Number
IR3742
Package Type
PQFN 5 mm x 6 mm
IR3742
Standard Pack
Form
Quantity
Tape and Reel
4000
Orderable Part Number
IR3742MTRPBF
PBF Lead Free
TR Tape and Reel
M Package Type
1 www.irf.com © 2014 International Rectifier
Submit Datasheet Feedback
March 12, 2014


International Rectifier Electronic Components Datasheet

IR3742 Datasheet

20A Integrated PowIRstage

No Preview Available !

BASIC APPLICATION
Vin
Vin PVin Boot
Enable
SW
IR3742
PWM
Vcc /
LDO_out
OC_En
Fault
NC Gnd PGnd
Vo
VCC
Fault
Figure 1: IR3742 Basic Application Circuit
PINOUT DIAGRAM
IR3742
92
90
88
86
84
82
80
78
0
5 10 15
Iout [A]
20
Figure 2: IR3742 Efficiency
PVin=Vin=12V, Vout=1.2V, Fs=300kHz, L=470nH
[DCR=0.165mOhm]
Figure 3: 5mm x 6mm PQFN (Top View)
2 www.irf.com © 2014 International Rectifier
Submit Datasheet Feedback
March 12, 2014


Part Number IR3742
Description 20A Integrated PowIRstage
Maker International Rectifier
Total Page 26 Pages
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