UCC28740
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SLUSBF3A –JULY 2013–REVISED JULY 2013
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, VVDD = 25 V, HV = open, VFB = 0 V, VVS = 4 V, TA = –40°C to +125°C, TJ = TA
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP MAX UNITS
PROTECTION
VOVP
Overvoltage threshold
At VS input, TJ = 25°C(2)
4.52
1.4
4.6
1.5
4.71
1.6
V
VOCP
Overcurrent threshold
At CS input
IVSL(run)
IVSL(stop)
KVSL
VS line-sense run current
VS line-sense stop current
VS line sense ratio
Current out of VS pin increasing
Current out of VS pin decreasing
IVSL(run) / IVSL(stop)
190 225
275
100
µA
70
80
2.8
2.45
3.05 A/A
°C
TJ(stop)
Thermal-shutdown temperature
Internal junction temperature
165
(2) The overvoltage threshold level at VS decreases with increasing temperature by 0.8 mV/°C. This compensation is included to reduce the
power-supply output overvoltage detection variance over temperature.
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