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NCP1280_05 Datasheet(数据表) 2 Page - ON Semiconductor

部件型号  NCP1280
说明  Active Clamp Voltage Mode PWM Controller for Off-Line Applications
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

NCP1280 Datasheet(HTML) 2 Page - ON Semiconductor

  NCP1280_05 数据表 HTML 1Page - ON Semiconductor NCP1280_05 数据表 HTML 2Page - ON Semiconductor NCP1280_05 数据表 HTML 3Page - ON Semiconductor NCP1280_05 数据表 HTML 4Page - ON Semiconductor NCP1280_05 数据表 HTML 5Page - ON Semiconductor NCP1280_05 数据表 HTML 6Page - ON Semiconductor NCP1280_05 数据表 HTML 7Page - ON Semiconductor NCP1280_05 数据表 HTML 8Page - ON Semiconductor NCP1280_05 数据表 HTML 9Page - ON Semiconductor Next Button
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NCP1280
http://onsemi.com
2
Figure 2. NCP1280 Functional Block Diagram
+
+
5.0 V Reference
Vin
GND
VEA
Delay
Logic
OUT1
+
+
+
CS
S
R
Q
CSS
10
5
14
16
1
11
12
RD
STOP
STOP
Vin
Disable
CCSKIP
Clock
Disable_ss
S
R
Q
Monotonic
Start
(250 ns)
Disable_ss
CAUX
DIS
VAUX
VAUX
OUT2
VAUX
15
13
VAUX
10 pF
FF Ramp
(Adjustable)
* Trimmed during
manufacturing to obtain
1.3 V with RT = 101 kW
Vin
RFF
FF
4
+
CURRENT MIRROR
+
RT
2 V
10 pF
I1
+
2 V
7
Oscillator Ramp
2 V
+
DIS
DIS
8
+ −
2 V
Max DC
Comparator
PWM
Comparator
+
Soft Start
Comparator
0.5 V
+
0.6 V
+
SS
9
One Shot
Pulse
+
6
CSKIP
3.6 V
1.49 V
3
UV/OV
+
2 V
+
One Shot
Pulse
+
+
I1
2
+
1.3 V*
VREF
tD
20 k
W
40 k
W
VREF
DCMAX
2 k
W
32 k
W
27 k
W
5.3 k
W
6.7 k
W
+
VDC(inv)
RMDP
RP
CFF
Disable_VREF
Disable_VREF
IFF
Disable
11
mA
+
V
+
I
+
V
125 k
W
RT
(600 ns)
One Shot
Pulse
Clock
VREF
VREF
Output
Latch
(Reset
Dominant)
Latch
(Reset
Dominant)
ISTART
VAUX(ON)/VAUX(OFF)
6
mA




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