IR3551MTRPBF International Rectifier, IR3551MTRPBF Datasheet - Page 2

• Manufacturer Part Number: IR3551MTRPBF
• Description: The IR3551 integrated PowIRstage is a synchronous buck gate driver IC with co-packed control and synchronous MOSFETs and Schottky diode.
• Manufacturer: International Rectifier

Specifications of IR3551MTRPBF

• Package: PQFN / 5 x 6
• Iout (a): 50
• Switch Freq (khz): up to 1.0MHz
• Input Range (v): 4.5 - 15
• Output Range (v): 0.25 - (VCC -2.5)

PINOUT DIAGRAM
TYPICAL APPLICATION DIAGRAM
4.5V to 7V
PHSFLT#
diode emulation
BBRK#
Optional for
REFIN
PWM
VCC
IOUT
setup
Figure 3: IR3551 Pin Diagram, Top View
10k
1nF
R1
2
C8
March 12, 2012 | FINAL DATASHEET
22nF
C9
25
21
22
23
24
26
1uF
C3
No Connect
PHSFLT#
PWM
BBRK#
LGND
REFIN
IOUT
TGND
IR3551
27
Figure 4: Application Circuit with Current Sense Amplifier
CSIN-
Amplifier
Current
Drivers
1
Sense
Gate
and
VCC
3
2
CSIN+
50A Integrated PowIRstage®
16-19
VIN
ORDERING INFORMATION
BOOST
PQFN, 28 Lead
PQFN, 28 Lead
5mm x 6mm
5mm x 6mm
PGND
PGND 4
SW
Package
Package
20
6-13
14, 15
0.22uF
0.1uF
C5
C1
2.49k
Tape & Reel Qty
R2
150nH
L1
3000
Qty
100
0.22uF
10uF x 2
C4
C2
4.5V to 15V
22uF
C6
VIN
IR3551
470uF
IR3551MTRPBF
C7
Part Number
Part Number
IR3551MPBF
VOUT