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Номер в каталоге
Компоненты Описание
NCP1280DR2G Просмотр технического описания (PDF) - ON Semiconductor
Номер в каталоге
Компоненты Описание
производитель
NCP1280DR2G
Active Clamp Voltage Mode PWM Controller for Off-Line Applications
ON Semiconductor
NCP1280DR2G Datasheet PDF : 18 Pages
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NCP1280
1
V
in
I
START
Disable
V
AUX
16
V
AUX
C
AUX
+
14
−
GND
V
in
+
1.49 V
−
3
V
AUX(ON)
/V
AUX(OFF)
Disable_V
REF
+
−
One Shot
Pulse
(250 ns)
S
Q
Monotonic
Start
Latch
(Reset
Dominant)
R
5.0 V Reference
DIS
V
REF
11
Disable_V
REF
R
D
UV/OV
+
−
+
3.6 V−
V
REF
CSKIP
11
m
A
Disable
−
+
6
C
CSKIP
5
CS
−
+
+
One Shot
2V
−
Pulse
(600 ns)
+
−
+
0.6 V
−
Clock
STOP
Disable_ss
S
Q
Output
Latch
(Reset
Dominant)
R
Delay
Logic
12
t
D
DIS
15
OUT1
V
AUX
DIS
13
OUT2
V
AUX
V
REF
+
+−
0.5 V
−
6
m
A
9
Disable_ss
Soft Start
− +
Comparator
CURRENT MIRROR
I
1
I
1
2
Oscillator Ramp
2V
SS
C
SS
7
R
T
R
T
V
in
STOP
+
* Trimmed during
1.3 V* manufacturing to obtain
−
1.3 V with R
T
= 101 k
W
10 pF
+
2V
−
Clock
One Shot
Pulse
+
−
+
2V
−
R
FF
4
5.3 k
W
FF
I
FF
6.7 k
W
+
V
−
I
+
V
125 k
W
+
−
FF Ramp
(Adjustable)
PWM
Comparator
+−
10
V
EA
2 k
W
20 k
W
Max DC
+ − Comparator
2V
40 k
W
+
32 k
W
V
DC(inv)
−
27 k
W
V
REF
R
MDP
8
DC
MAX
R
P
10 pF C
FF
Figure 2. NCP1280 Functional Block Diagram
http://onsemi.com
2
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