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IRU3048CS Datasheet(PDF) 4 Page - International Rectifier

Part # IRU3048CS
Description  DUAL SYNCHRONOUS PWM CONTROLLER CIRCUITRY AND LDO CONTROLLER
PDF  18 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IRU3048CS Datasheet(HTML) 4 Page - International Rectifier

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4
Rev. 1.7
09/12/02
IRU3048
www.irf.com
BLOCK DIAGRAM
Figure 2 - Block diagram of the IRU3048.
Bias
Generator
LDrv2
Two Phase
Oscillator
1.25V
3V
Ramp1
Fb3
0.5V
POR
POR
Gnd
HDrv2
VcH2
SS
Comp2
Error Amp2
PWMComp2
POR
VOUT3
25uA
Reset Dom
LDrv1
HDrv1
VcH1
Fb1
Comp1
Error Amp1
PWMComp1
25K
25K
Reset Dom
Set1
Set2
Ramp2
64uAMax
UVLO
VcH2
3.5V / 3.3V
VcH1
3.5V / 3.3V
4.2V / 4.0V
Fb2
25K
40mA LDO Controller
PGnd
Vcc
1.25V
1.25V
SS>2V
R
S
Q
S
R
Q
Vcc
9
15
16
3
2
4
14
1
12
11
10
5
6
7
8
13
1.25V
2V
SS
25K
25K
25K



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