L6377

Over current operation

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Over current operation

In order to implement a short circuit protection the output power MOS is driven in linear

must be chosen according to the following formula:

with

For

This condition (current limited to the Isc value) lasts for a Ton time interval, that can be set

formula:

for

interval with:

Figure 5.

Short circuit operation waveforms

OUTPUT

CURRENT

Time

DIAG

(active low)

Time

Short Circuit

Short Circuit

Isc

Iout

D94IN105