Datasheet

STBP120 Operation
Doc ID 15492 Rev 5 11/36
3.4 Overvoltage lockout (OVLO)
If the input voltage V
IN
rises above the threshold level V
OVLO
, the MOSFET switch is
immediately turned off (see Figure 7). At the same time, the fault indication output FLT
is
activated (i.e. driven low). This device is equipped with hysteresis, V
HYS(OVLO)
, to improve
noise immunity under transient conditions.
For available OVLO thresholds and hystereses, please see the Ta bl e 5 .
3.5 Thermal shutdown
If the STBP120 internal junction temperature exceeds the T
OFF
threshold, internal MOSFET
switch is turned off and the fault indication output FLT
is driven low.
To improve thermal stability, this circuit has a 20 °C hysteresis, T
HYS(OFF)
.