NCP1237 ONSEMI [ON Semiconductor], NCP1237 Datasheet - Page 7

• Manufacturer Part Number: NCP1237
• Description: Fixed Frequency Current Mode Controller for Flyback Converters
• Manufacturer: ONSEMI [ON Semiconductor]

ELECTRICAL CHARACTERISTICS
V
LATCH−OFF INPUT
TEMPERATURE SHUTDOWN
6. Internal supply current only, current in FB pin not included (current flowing through GND pin only).
High threshold
Low threshold
Current source for direct NTC connection
Blanking duration on high latch detection
Blanking duration on low latch detection
Clamping voltage
Temperature shutdown
Temperature shutdown hysteresis
CC
= 11 V unless otherwise noted)
During normal operation
During soft−start
Characteristics
(For typical values T
http://onsemi.com
V
V
V
I
I
T
T
Latch
Latch
Latch
Latch
Latch
J
J
going up
going down
J
= 25°C, for min/max values T
= 0 mA
= 1 mA
Test Condition
going up
going down
= 0 V
7
V
V
I
NTC(SSTART)
t
t
clamp0(Latch)
clamp1(Latch)
T
Latch(OVP)
Latch(OTP)
Symbol
TSD(HYS)
V
V
T
J
I
NTC
OVP
OTP
TSD
= −40°C to +125°C, V
2.37
0.76
Min
156
135
1.0
1.8
78
40
20
−
Typ
182
400
150
2.5
0.8
1.2
2.3
91
55
30
HV
= 120 V,
Max
2.63
0.84
104
208
165
1.4
2.8
70
40
−
Unit
mA
°C
°C
ms
ms
V
V
V