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IRF7457 Datasheet(PDF) 17 Page - International Rectifier

Part # IRF7457
Description  8-PIN SYNCHRONOUS PWM CONTROLLER
PDF  21 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IRF7457 Datasheet(HTML) 17 Page - International Rectifier

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IRU3037 / IRU3037A
17
Rev. 2.8
03/10/03
www.irf.com
DEMO-BOARD APPLICATION
5V or 12V to 3.3V @ 10A
Ref Desig
Description
Value
Qty
Part#
Manuf
1
1
1
3
1
1
1
2
2
2
1
1
1
3
1
1
1
1
Q1
Q2
U1
D1, D2, D4
L1
L2
C1
C2A, C2B
C9B, C9C
C5, C6
C3
C4
C7
C8, C13, C19
R3
R4
R5
R6
MOSFET
MOSFET
Controller
Diode
Inductor
Inductor
Capacitor, Tantalum
Capacitor, Poscap
Capacitor, Poscap
Capacitor, Ceramic
Capacitor, Ceramic
Capacitor, Ceramic
Capacitor, Ceramic
Capacitor, Ceramic
Resistor
Resistor
Resistor
Resistor
IRF7457
IRF7460
IRU3037
LL4148
D03316P-102HC
D05022P-332HC
ECS-T1CD336R
16TPB47M
6TPC150M
ECJ-2VF1E104Z
ECJ-3YB1E105K
ECJ-2VB1H222K
ECJ-2VB2D471K
ECJ-2VF1C105Z
IR
IR
IR
Coilcraft
Coilcraft
Panasonic
Sanyo
Sanyo
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Application Parts List
20V, 7m
V, 15A
20V, 10m
V, 12A
Synchronous PWM
Fast Switching
1
mH, 10A
3.3
mH, 12A
33
mF, 16V
47
mF, 16V, 70mV
150
mF, 6.3V, 40mV
0.1
mF, Y5V, 25V
1
mF, X7R, 25V
2200pF, X7R, 50V
470pF, X7R
1
mF, Y5V, 16V
20K, 5%
4.7
V, 5%
1K, 1%
1.65K, 1%
Figure 21 - Demo-board application of IRU3037.
IRU3037
U1
Vcc
Vc
HDrv
LDrv
Fb
Gnd
Comp
SS/SD
L2
L1
Gnd
Gnd
VIN
5V or 12V
R6
Q2
Q1
IRF7457
IRF7460
D2
C2A
47uF
16V
C2B
47uF
16V
R3
20K
C1
33uF
16V
D1
LL4148
LL4148
C6
0.1uF
3.3uH
C7
470pF
R4
4.7
V
C9B
150uF
6.3V
C13
1uF
1uH
C3
1uF
C19
1uF
C8
1uF
C5
0.1uF
C4
2200pF
1.65K
D4
LL4148
VOUT
3.3V
@ 10A
R5
1K
C9C
150uF
6.3V



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