Datasheet

Functional description A7986A
14/42 DocID022801 Rev 5
Figure 8. Overcurrent protection
5.5 Enable function
The enable feature allows the device to be put into standby mode. With the EN pin is lower
than 0.3 V the device is disabled and the power consumption is reduced to less than 30 μA.
With the EN pin is lower than 1.2 V, the device is enabled. If the EN pin is left floating, an
internal pull-down ensures that the voltage at the pin reaches the inhibit threshold and the
device is disabled. The pin is also V
CC
compatible.
5.6 Hysteretic thermal shutdown
The thermal shutdown block generates a signal that turns off the power stage if the junction
temperature goes above 150 °C. Once the junction temperature goes back to about 120 °C,
the device restarts in normal operation. The sensing element is very close to the PDMOS
area, so ensuring an accurate and fast temperature detection.