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NCP1027 Datasheet(PDF) 3 Page - ON Semiconductor

Part No. NCP1027
Description  High−Voltage Switcher for Medium Power Offline SMPS Featuring Low Standby Power
Download  30 Pages
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP1027 Datasheet(HTML) 3 Page - ON Semiconductor

 
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NCP1027
http://onsemi.com
3
VCC
Vclamp
Auto−Recovery OVP
+
+
+
VCC
Mngt
Fault
UVLOs
4 V rst
VDD
IC1
GND
20
ms RC
S
Q
Q
R
LEB
Timer
Ip Flag
+
VCC < 4 V
Reset
IBO
+
VBO
65 kHz or
100 kHz
CLOCK
S
Q
Q
R
Jittering
Vdd
BO
Ramp
Comp.
+
25%
of lp
+
Vdd
RFB
FB
Skip
+
Soft−Start
Ip Flag
+
OPP
Vcc
Drain
UVLO
Figure 2. Internal Block Diagram
+
Vlatch
Icomp
Max Ip Selection
Over Power
Protection Input
Ramp Compensation
50
ms RC


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