NCP1280_05 ONSEMI [ON Semiconductor], NCP1280_05 Datasheet - Page 5

• Manufacturer Part Number: NCP1280_05
• Description: Active Clamp Voltage Mode PWM Controller for Off-Line Applications
• Manufacturer: ONSEMI [ON Semiconductor]

2. Guaranteed by design only.
ELECTRICAL CHARACTERISTICS
R
STARTUP CONTROL AND V
LINE UNDER/OVERVOLTAGE DETECTOR
CURRENT LIMIT
V
Minimum Startup Voltage (Pin 1)
I
Startup Circuit Output Current
Startup Circuit Off−State Leakage Current (V
Startup Circuit Breakdown Voltage (Note 2)
Auxiliary Supply Current After V
Undervoltage Threshold (V
Undervoltage Hysteresis
Overvoltage Threshold (V
Overvoltage Hysteresis
Cycle by Cycle Threshold Voltage
Propagation Delay to Output (V
Cycle Skip Threshold Voltage
Cycle Skip Charge Current (V
D
START
Undervoltage Propagation Delay to Output
Overvoltage Propagation Delay to Output
AUX
= 60.4 kW, R
Startup Threshold/V
Minimum Operating V
Hysteresis
V
V
T
T
I
Outputs Disabled
Outputs Enabled
V
START(off)
AUX
AUX
J
J
CS
Regulation
= 25 C
= −40 C to 125 C
T
T
T
T
V
V
= 1.5 mA, V
J
J
J
J
= I
EA
UV/OV
= 0 V
= V
= 25 C
= −40 C to 125 C
= 25 C
= −40 C to 125 C
LIM1
= 0 V
AUX(on)
= 50 mA, T
= 0.7 V
FF
to 2.0 V, measured when V
= 1.0 MW, for typical values T
AUX
− 0.2 V
= V
AUX
J
AUX
= 25 C
in
AUX(on)
in
Regulation Peak (V
Increasing)
Increasing)
Characteristic
Valley Voltage After Turn−On
AUX
CSKIP
EA
AUX
REGULATOR
− 0.2 V, I
= 2.0 V)
= 0 V)
Turn−On
(V
OUT
in
REF
in
= 82 V, V
= 700 V)
reaches 0.5 V
AUX
J
= 0 A
= 25 C, for min/max values, T
increasing)
AUX
http://onsemi.com
= 12 V, V
OH
NCP1280
5
EA
= 2 V, R
V
I
START(min)
V
V
START(off)
Symbol
V
J
I
V
V
I
T
AUX(on)
AUX(off)
I
I
I
START
(BR)DS
I
I
CSKIP
= −40 C to 125 C, unless otherwise noted)
AUX1
AUX2
AUX3
V
V
t
OV(H)
UV(H)
LIM1
LIM2
t
t
V
ILIM
= 101 kW, C
OV
UV
UV
OV
H
CSKIP
0.080
10.5
1.40
3.47
0.44
0.54
Min
700
6.6
8.0
13
10
10
−
−
8
−
−
−
−
−
−
−
−
−
= 6800 pF,
0.098
0.145
11.0
17.5
13.8
1.52
3.61
0.48
0.57
12.3
Typ
250
160
7.0
4.0
2.7
1.3
4.6
23
90
−
−
−
−
−
0.120
Max
11.5
1.64
3.75
0.52
0.62
100
150
7.4
5.0
2.5
6.5
25
21
25
17
19
50
15
−
−
−
−
−
Unit
mA
mA
mA
mA
ns
ns
ns
V
V
V
V
V
V
V
V
V