L5987 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L5987' PDF : 40 Pages View PDF
Functional description
Figure 8. Overcurrent protection strategy
L5987
5.5
Inhibit function
The inhibit feature allows to put the device into standby mode . With the INH pin higher than
1.9 V, the device is disabled and the power consumption is reduced to less than 30 A. With
the INH pin lower than 0.6 V, the device is enabled. If the INH pin is left floating, an internal
pull-up ensures that the voltage at the pin reaches the inhibit threshold and the device is
disabled. The pin is also VCC 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
130 °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.
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DocID14972 Rev 4
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