NCP1234
ELECTRICAL CHARACTERISTICS (For typical values TJ = 25C, for min/max values TJ = −40C to +125C, VHV = 125 V,
VCC = 11 V unless otherwise noted)
Characteristics
Test Condition
Symbol
Min
Typ
Max
LATCH−OFF INPUT
High threshold
Low threshold
Current source for direct NTC
connection
During normal operation
During soft−start
Blanking duration on high latch
detection
VLatch going up
VLatch going down
VLatch = 0 V
65 kHz version
100 kHz version
VOVP
VOTP
2.35
2.5
2.65
0.76
0.8
0.84
INTC
65
95
105
INTC(SSTART)
130
190
210
tLatch(OVP)
35
50
70
25
35
45
Blanking duration on low latch
detection
tLatch(OTP)
−
350
−
Clamping voltage
TEMPERATURE SHUTDOWN
ILatch = 0 mA
ILatch = 1 mA
Vclamp0(Latch)
1.0
1.2
1.4
Vclamp1(Latch)
2.0
2.4
3.0
Temperature shutdown
Temperature shutdown
hysteresis
TJ going up
TJ going down
TTSD
135
150
165
TTSD(HYS)
20
30
40
Unit
V
V
mA
ms
ms
V
C
C
http://onsemi.com
7