IR3553MTRPBF International Rectifier, IR3553MTRPBF Datasheet - Page 3

• Manufacturer Part Number: IR3553MTRPBF
• Description: The IR3553 integrated PowIRstage is a synchronous buck gate driver IC with co‐packed control and synchronous MOSFETs and Schottky diode.
• Manufacturer: International Rectifier

Specifications of IR3553MTRPBF

• Package: PQFN / 4 x 6
• Iout (a): 40
• Switch Freq (khz): up to 1.0MHz
• Input Range (v): 4.5 - 15
• Output Range (v): 0.25 - (VCC -2.5)

TYPICAL APPLICATION DIAGRAM (CONTINUED)
FUNCTIONAL BLOCK DIAGRAM
4.5V to 7V
PHSFLT#
BBRK#
PWM
VCC
3
10k
PHSFLT#
R1
BBRK# 20
REFIN
LGND
PWM
IOUT
March 12, 2012 | FINAL DATASHEET
VCC
19
18
21
23
22
18
19
21
3
20
22
23
0.1uF
C3
No Connect
IR3553
PHSFLT#
PWM
BBRK#
REFIN
LGND
IOUT
TGND
3.3V
IR3553
200k
24
Figure 5: Application Circuit without Current Sense Amplifier
& Thermal
Current Sense
Detection
MOSFET
Amplifier
CSIN-
POR
+
-
CSIN-
Amplifier
Current
Drivers
1
Figure 6: IR3553 Functional Block Diagram
R
Sense
S
1
Gate
3.3V
and
Q
3
CSIN+
VCC
2
2
CSIN+
Reference,
Dead-time
Power-on
PGND
40A Integrated PowIRstage®
Control
(POR),
Reset
BOOST
3.3V
and
4
17
VCC
TGND
24
14-16
VIN
Driver
VCC
Comparator
Emulation
GATEL
BOOST
Diode
PGND
PGND 4
5
Driver
SW
Offset
+
-
GATEL
25
12, 13
17
6-11
+
-
0.22uF
18k
VIN
14
0.1uF
C5
C1
PGND
2.49k
12
R2
VIN
15
150nH
PGND
CS+
13
L1
0.22uF
10uF x 2
VIN
16
C4
C2
CS-
4.5V to 15V
22uF
10
11
12
C6
7
8
9
VIN
SW
SW
SW
SW
SW
SW
IR3553
470uF
C7
VOUT