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IRU3072C Datasheet(PDF) 5 Page - International Rectifier

Part # IRU3072C
Description  20-PIN SYNCHRONOUS PWM CONTROLLER/ 3 LDO CONTROLLER
Download  24 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IRU3072C Datasheet(HTML) 5 Page - International Rectifier

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IRU3072
5
Rev. 1.0
3/25/04
www.irf.com
BLOCK DIAGRAM
Figure 2 - Simplified block diagram of the IRU3072.
20uA
64uA
Max
POR
Oscillator
Error Amp
Ct
Error Comp
64uA
325K=1.6V
When SS=0
Reset Dom
POR
0.4V
FbLo Comp
Vc
HDrv
Vcc
LDrv
PGnd
SS1
Fb1
Comp
25K
3V
R
S
Q
Rt
Gnd
Rt
CS Comp
OCSet
3V
20uA
20uA
64uA
Max
SSLDO
0.8V
VSEN33 / SDB
Drv2
Drv3
Drv4
0.8V
VccLDO
Fb2
Fb3
Fb4
Bias
Generator
0.8V
3V
POR
VccLDO
UVLO
2.5V / 2.35V
1.27V / 1.2V
Vc
3.5V / 3.3V
Vcc
4.2V / 4.0V
Enbl
12
17
16
15
14
11
4
18
19
20
1
2
3
7
8
6
5
9
10
13
64uA
Max
64uA
Max
25K
25K
25K
25K
1.27V


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