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FSD1000 Datasheet(PDF) 2 Page - Fairchild Semiconductor

Part No. FSD1000
Description  Combo Fairchild Power Switch (FPS)
Download  20 Pages
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FSD1000 Datasheet(HTML) 2 Page - Fairchild Semiconductor

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FSD1000
2
Internal Block Diagram
Figure 2. Functional Block Diagram of FSD1000
5
6
1
11
Vref
Internal
Bias
S
Q
Q
R
OSC
I
delay
I
FB
S
Q
Q
R
R
Vcc
V
FB,AUX
Isense
Gate drive
12
Vstr
I
ch
Vcc good
Soft Start
(10ms)
4Output
9.5/13.5V
21V
Vcc OVP
8
I
delay
I
FB
2V
FB.MAIN
Vcc
Vcc
Power off Reset
(Vcc <6V)
OTP
Line OVP
Vcc OVP
9
S
Q
Q
R
Gate
drive
Burst
R
Q
Q
S
Auto
restart
Latch
Counter
/4
Burst
Aux OLP
7
Line OVP
Aux OFF
3
OSC
7V
S/S
LS2
Drain
GND
I
LIM
LS1
0.8 V
1.0 V
1.4 V
1.68 V
Main OFF
4.4 V
2.4 V
2.0 V
PWM
Comparator
0.5 V
0.7 V
4.5V
R
3R
Vcc
Vref
Vref
Main OLP
Vcc good
1:110
0.3V
Vcc good
Vcc
good
time delay
(30ms)
Main
OLP
Vth
H : Dmain < 0.67
L : Dmain < 0.50
I
SS


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