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IR3553 Datasheet(PDF) 3 Page - International Rectifier

Part No. IR3553
Description  40A Integrated PowIRstage
Download  22 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3553 Datasheet(HTML) 3 Page - International Rectifier

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July 16, 2014 | DATASHEET V3.3
3
IR3553
40A Integrated PowIRstage®
TYPICAL APPLICATION DIAGRAM (CONTINUED)
SW
PWM
VIN
PGND
Gate
Drivers
and
Current
Sense
Amplifier
IOUT
VCC
PHSFLT#
VCC
BOOST
VIN
PWM
REFIN
PHSFLT#
BBRK#
BBRK#
CS+
LGND
CSIN-
CSIN+
IR3553
4.5V to 7V
4.5V to 15V
C2
10uF x 2
C5
0.22uF
C3
0.22uF
R1
10k
C4
0.22uF
R2
2.49k
L1
150nH
3
14-16
17
18
19
20
21
23
22
1
2
12, 13
6-11
C1
0.22uF
PGND 4
24
TGND
No Connect
CS-
VOUT
C7
470uF
C6
22uF
Figure 5: Application Circuit without Current Sense Amplifier
FUNCTIONAL BLOCK DIAGRAM
PW M
6
7
8
9
10
11
14
15
16
VIN
VIN
VIN
SW
SW
SW
SW
SW
SW
1
4
12
13
CSIN -
PG N D
PG N D
PG N D
17
BO O ST
Pow er-on
Reset
(PO R),
3.3V
Reference,
and
D ead-tim e
Control
19
IO U T
23
VCC
3
BBRK#
20
25
5
G ATEL G ATEL
D river
D river
18
PH SFLT#
2
CSIN +
21
LG N D
22
REFIN
Current Sense
Am plifier
M O SFET
& Therm al
D etection
S
Q
R
PO R
3.3V
VCC
-
+
3.3V
24
TG N D
Figure 6: IR3553 Functional Block Diagram


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