iru3072 International Rectifier Corp., iru3072 Datasheet - Page 22

• Manufacturer Part Number: iru3072
• Description: 20-pin Synchronous Pwm Controller/ 3 Ldo Controller -
• Manufacturer: International Rectifier Corp.

IRU3072
TYPICAL APPLICATION
22
V
V
V
OUT2
OUT4
2.5V
OUT3
1.5V
3.3V
1.8V
IRLR2703
C2
C4
C9
C10
Q1
Q2
Q3
C13
0.1uF
3.3K
220pF
R8
1.24K
2.15K
Figure 33 - IRU3072 typical application with one bus input voltage
866
R5
R1
R3
33nF
47K
C14
R9
R4
1K
R6
C11
R2
1K
1K
15nF
V
Drv2
Fb2
Drv3
Fb3
Drv4
Fb4
Rt
SS1
SSLDO
Comp
SEN33
V
Gnd
CC
IRU3072
=V
/ SDB
U1
BUS
PGnd
VccLDO
OCSet
=12V to generate all LDO output.
HDrv
LDrv
Fb1
Vcc
Vc
www.irf.com
6.8K
R13
1K
R7
C1
1uF
C5
1uF
C6
0.1uF
R11
1K
Q4
IRF7460
Q5
IRF7460
200
3.125K
R12
R10
C7
16TPB47M
47uF, 16V
V
1uH
1uH
L2
L1
C12
3x 6TPB330M
6.3V, 330uF, 40m
C8
10uF
V
3.3V
V
V
IN
OUT1
=12V
Rev. 1.0
3/25/04