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IR3651SPBF Datasheet(PDF) 3 Page - International Rectifier

Part No. IR3651SPBF
Description  HIGH VOLTAGE SYNCHRONOUS PWM BUCK CONTROLLER
Download  19 Pages
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Maker  IRF [International Rectifier]
Homepage  http://www.irf.com
Logo IRF - International Rectifier

IR3651SPBF Datasheet(HTML) 3 Page - International Rectifier

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IR3651SPbF
10/11/2006
Block Diagram
Fig. 1: Simplified block diagram of the IR3651
3
64uA Max
POR
Oscillator
Error Amp
Ct
Error Comp
Reset Dom
Vcc
Gnd
4.17V
0.25V
Bias
Generator
3V
1.25V
POR
SS/SD
Fb
Comp
25K
25K
3V
R
S
Q
SYNC
Vb
Rt
4
3
1
2
8
11
13
Vcc
DELAY
UV
DETECT
UV Q
S
R
UV
DETECT
HIGH
VOLTAGE
LEVEL
SHIFT
CIRCUIT
LOW
VOLTAGE
LEVEL
SHIFT
LOW
VOLTAGE
LEVEL
SHIFT
HDrv
9
Vs
10
DRVcc
7
LDrv
6
PGND
5
Vcc
1.25V
14
Rt
10uA
OCset
12
OCP
3uA
OCP
20uA
0.3V
SS
Q
R
S
POR
PBias


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