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NCP1562A Datasheet(PDF) 2 Page - ON Semiconductor

Part No. NCP1562A
Description  High Performance Active Clamp/Reset PWM Controller
Download  26 Pages
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1562A Datasheet(HTML) 2 Page - ON Semiconductor

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NCP1562A, NCP1562B
http://onsemi.com
2
Figure 1. Detailed Block Diagram
Vin
1
16
VAUX
Iinhibit
Istart
Disable
+
--
VAUX(on)
+
--
Central
Logic
Disable_VREF
5.0 V Reference
VAUX
P.O.R.
Bias
VREF
8
S
Dominant
Reset
Latch
R
Q
CAUX
VAUX(on)/
VAUX(off1)/
VAUX(off2)
+
--
+
--
One Shot
Pulse
VUV Soft--Stop
Complete
Thermal
Shutdown
STOP
UVOV
Detector
UVOV
Vin
R2
R1
2V
3V
Vref
CT
RT
6
RTCT
500 mA
SYNC
DMAX
Clock
Oscillator
7
SYNC
+
--
CSKIP
Comparator
+
--
VCSKIP
CSKIP
Control
Logic
VREF
ICSKIP(C)
ICSKIP(D)
12
CSKIP
CCSKIP
Clock
+
--
Not
Saturated
+
--
3.6 V
Saturation
Comparator
S
Dominant
Reset
Latch
R
Q
Q
Clock
FF Reset
Delay
Logic
Enable_Output
OUT1
15
VAUX
14
PGND
OUT2
13
VAUX
11
270 kΩ
20 kΩ
VREF
--
+
PWM
Comparator
-- +
Soft--Start
Comparator
-- +
FF
Comparator
+
--
0.2 V
3V
+
--
Vin
RFF
CFF
VEA
FF
3
5
GND
FF Reset
Ilimit
Comparator
+
--
+
--
0.2 V = A ver.
(0.5 V= Bver.)
OUT
Fixed80ns LEB
Clock
Enable
Not
Saturated
Soft--Start
Soft--Stop
Control Logic
STOP
VX
Soft--Start
Complete
Soft--Stop
Complete
VREF
ISS(C)
ISS(D)
10
SS
CSS
4
CS
Enable_Output
1V
2
tD
RD
9
VX


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