VNQ660SP

Application information

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This resistor can be shared amongst several different HSDs. Please note that the value of

maximum on-state currents of the different devices.

Please note that, if the microprocessor ground is not shared by the device ground, then the

values. This shift will vary depending on how many devices are ON in the case of several

If the calculated power dissipation requires the use of a large resistor, or several devices

have to share the same resistor, then ST suggests using solution 2 below.

3.1.2

an inductive load. This small signal diode can be safely shared amongst several different

HSD. Also in this case, the presence of the ground network will produce a shift (j600mV) in

the input threshold and the status output values if the microprocessor ground is not common

with the device ground. This shift will not vary if more than one HSD shares the same

diode/resistor network. Series resistor in INPUT and STATUS lines are also required to

prevent that, during battery voltage transient, the current exceeds the Absolute Maximum

Rating. Safest configuration for unused INPUT and STATUS pin is to leave them

unconnected.

3.2

Load dump protection

line that are greater than those shown in the ISO T/R 7637/1 table.

3.3

MCU I/O protection

prevent the µC I/O pins from latching up.

The value of these resistors is a compromise between the leakage current of µC and the

current required by the HSD I/Os (Input levels compatibility) with the latch-up limit of µC

I/Os:

Example

For the following conditions:

5k

Recommended values are: