IRU3037(2003) データシートの表示（PDF） - International Rectifier
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IRU3037 Datasheet PDF : 21 Pages
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IRU3037 / IRU3037A
DEMO-BOARD APPLICATION
5V or 12V to 3.3V @ 10A
VIN
5V or 12V
C1
33uF
16V
Gnd
C8
1uF
C5
0.1uF
C4
2200pF
R3
20K
L1
1uH
D4
LL4148
C2A
47uF
16V
C2B
47uF
16V
D2
LL4148
D1
LL4148
Vcc
Vc
HDrv
SS/SD
U1
IRU3037
LDrv
Comp
Gnd Fb
C3
C19
1uF
1uF
Q2
IRF7460
Q1
IRF7457
C6
0.1uF
L2
C7
470pF
R4
4.7V
3.3uH
R6
1.65K
R5
1K
C9B C9C C13
150uF 150uF 1uF
6.3V 6.3V
VOUT
3.3V
@ 10A
Gnd
Figure 21 - Demo-board application of IRU3037.
Application Parts List
Ref Desig
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
Description
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
Value
Qty
Part#
20V, 7mV, 15A
1 IRF7457
20V, 10mV, 12A
1 IRF7460
Synchronous PWM 1 IRU3037
Fast Switching
3 LL4148
1mH, 10A
1 D03316P-102HC
3.3mH, 12A
33mF, 16V
1 D05022P-332HC
1 ECS-T1CD336R
47mF, 16V, 70mV 2 16TPB47M
150mF, 6.3V, 40mV 2 6TPC150M
0.1mF, Y5V, 25V
2 ECJ-2VF1E104Z
1mF, X7R, 25V
1 ECJ-3YB1E105K
2200pF, X7R, 50V 1 ECJ-2VB1H222K
470pF, X7R
1 ECJ-2VB2D471K
1mF, Y5V, 16V
3 ECJ-2VF1C105Z
20K, 5%
1
4.7V, 5%
1
1K, 1%
1
1.65K, 1%
1
Manuf
IR
IR
IR
Coilcraft
Coilcraft
Panasonic
Sanyo
Sanyo
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Rev. 2.8
03/10/03
www.irf.com
17
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