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IR3551 Datasheet(PDF) 2 Page - International Rectifier

Part # IR3551
Description  The IR3551 integrated PowIRstage짰 is a synchronous buck gate driver co-packed with a control MOSFET and a synchronous MOSFET with integrated Schottky diode.
PDF  22 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3551 Datasheet(HTML) 2 Page - International Rectifier

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September 10, 2012 | FINAL DATASHEET
2
IR3551
50A Integrated PowIRstage®
PINOUT DIAGRAM
Figure 3: IR3551 Pin Diagram, Top View
ORDERING INFORMATION
Package
Tape & Reel Qty
Part Number
PQFN, 28 Lead
5mm x 6mm
4000
IR3551MTRPBF
Package
Qty
Part Number
PQFN, 28 Lead
5mm x 6mm
100
IR3551MPBF
TYPICAL APPLICATION DIAGRAM
SW
PWM
VIN
PGND
Gate
Drivers
and
Current
Sense
Amplifier
LGND
VCC
PHSFLT#
IOUT
VCC
BOOST
VIN
VOUT
PWM
IOUT
PHSFLT#
BBRK#
BBRK#
REFIN
REFIN
CSIN-
CSIN+
IR3551
4.5V to 7V
4.5V to 15V
C2
10uF x 2
C5
0.22uF
C3
1uF
R1
10k
C4
0.22uF
R2
2.49k
L1
150nH
C7
470uF
3
16-19
20
21
22
23
25
24
26
1
2
14, 15
6-13
C1
0.1uF
PGND 4
27
TGND
No Connect
C8
1nF
C9
22nF
Optional for
diode emulation
setup
C6
22uF
Figure 4: Application Circuit with Current Sense Amplifier



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