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NCP1238BD65R2G

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P38
NCP1238
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7
ELECTRICAL CHARACTERISTICS (For typical values T
J
= 25°C, for min/max values T
J
= −40°C to +125°C, V
HV
= 120 V,
V
CC
= 11 V unless otherwise noted)
Characteristics UnitMaxTypMinSymbolTest Condition
LATCH−OFF INPUT
High Threshold
V
Latch
going up V
OVP
2.37 2.5 2.63 V
Low Threshold V
Latch
going down V
OTP
0.76 0.8 0.84 V
Current Source for Direct NTC Connection
During normal operation
During soft−start
V
Latch
= 0 V
I
NTC
I
NTC(SSTART)
78
156
91
182
104
208
mA
Blanking Duration on High Latch Detection t
Latch(OVP)
40 55 70
ms
Blanking Duration on Low Latch Detection t
Latch(OTP)
− 400 −
ms
Clamping Voltage I
Latch
= 0 mA
I
Latch
= 1 mA
V
clamp0(Latch)
V
clamp1(Latch)
1.0
1.8
1.2
2.3
1.4
2.8
V
TEMPERATURE SHUTDOWN
Temperature Shutdown
T
J
going up T
TSD
135 150 165 °C
Temperature Shutdown Hysteresis T
J
going down T
TSD(HYS)
20 30 40 °C
5. Internal supply current only, current in FB pin not included (current flowing through GND pin only).
NCP1238
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8
TYPICAL PERFORMANCE CHARACTERISTICS
T
J
, JUNCTION TEMPERATURE (°C)
150125100250−50
3
5
7
9
11
V
CC
, SUPPLY VOLTAGE THRESHOLDS
(V)
Figure 4. Supply Voltage Thresholds vs.
Junction Temperature
Figure 5. Inhibit Threshold Voltage vs.
Junction Temperature
Figure 6. Inhibit Current vs. Junction
Temperature
Figure 7. Startup Current vs. Junction
Temperature
Figure 8. Minimum Startup Voltage vs.
Junction Temperature
7550−25
T
J
, JUNCTION TEMPERATURE (°C)
150125100250−50
0.0
0.2
0.4
0.6
1.0
V
inhibit
, INHIBIT THRESHOLD VOLTAGE
(V)
7550−25
4
6
8
10
12
13
T
J
, JUNCTION TEMPERATURE (°C)
150125100250−50
360
400
440
480
520
I
start1
, INHIBIT CURRENT (mA)
7550−25
0.8
380
420
460
500
T
J
, JUNCTION TEMPERATURE (°C)
150125100250−50
4.5
5.5
6.5
7.5
I
start2
, STARTUP CURRENT(mA)
7550−25
5.0
6.0
7.0
8.0
T
J
, JUNCTION TEMPERATURE (°C)
150125100250−50
0
5
10
15
30
V
HV(min)
, MINIMUM STARTUP
VOLTAGE (V)
7550−25
20
25
T
J
, JUNCTION TEMPERATURE (°C)
15
0
125100250−50
0
10
20
30
40
I
(start(off)
, STARTUP CIRCUIT LEAK-
AGE CURRENT (A)
7550−25
5
15
25
35
45
50
V
CC(reset)
V
CC(off)
V
CC(min)
V
CC(on)
1.4
1.2
V
CC
= 0 V
V
CC
= V
CC(on)
− 0.5 V
8.5
9.5
9.0
10
40
35
V
CC
= 10.5 V
I
HV
= 0.95 X I
start2
V
HV
= 500 V
Figure 9. Startup Circuit Leakage Current vs.
Junction Temperature
NCP1238
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9
TYPICAL PERFORMANCE CHARACTERISTICS
T
J
, JUNCTION TEMPERATURE (°C)
150125100250−50
80
90
100
110
120
V
HV
, BROWN−OUT CIRCUIT
THRESHOLDS (V)
Figure 10. Brown−Out Circuit Thresholds vs.
Junction Temperature
Figure 11. Line Overvoltage Circuit Thresholds
vs. Junction Temperature
Figure 12. I
CC
Supply Currents vs. Junction
Temperature
Figure 13. Oscillator Frequency vs. Junction
Temperature
Figure 14. Maximum Duty Ratio vs. Junction
Temperature
7550−25
T
J
, JUNCTION TEMPERATURE (°C)
150125100250−50
410
415
420
425
435
V
HV
, LINE OVERVOLTAGE CIRCUIT
THRESHOLDS (V)
7550−25
85
95
105
115
125
130
T
J
, JUNCTION TEMPERATURE (°C)
150125100250−50
0.50
1.00
1.50
2.00
2.50
I
CC
, OPERATING SUPPLY CURRENT (mA)
7550−25
430
0.75
1.25
1.75
2.25
T
J
, JUNCTION TEMPERATURE (°C)
150125100250−50
45
55
65
75
f
OSC
, OSCILLATOR FREQUENCY (kHz)
7550−25
50
60
70
80
T
J
, JUNCTION TEMPERATURE (°C)
150125100250−50
78.0
78.5
79.0
79.5
81.0
D
MAX
, MAXIMUM DUTY RATIO (%)
7550−25
80.0
80.5
T
J
, JUNCTION TEMPERATURE (°C)
15
0
125100250−50
0
10
20
30
40
t
rise
, t
fall
, DRIVER TRANSITIONS TIME
(ns)
7550−25
5
15
25
35
V
HV(start)
450
440
I
CC1
85
82.0
81.5
t
fall
V
HV(stop)
445
V
HV(OV1)
V
HV(OV2)
2.75
3.25
3.75
3.00
3.50
4.00
I
CC2
I
CC3
I
CC4
t
rise
Figure 15. Driver Transitions Time vs. Junction
Temperature
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NCP1238BD65R2G

Mfr. #:
Buy NCP1238BD65R2G
Manufacturer:
ON Semiconductor
Description:
Switching Controllers DSS AUTOR SOCP 65KHZ
Lifecycle:
New from this manufacturer.
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