Functional description

L9848

20/27

3.14

Abnormal voltage conditions

The L9848 survives the following abnormal voltage conditions.

3.14.1

Reverse Battery

applied either directly, or through a load to the drain pins (DRN1-6) with the source pins

(SRC1-6) connected to a load or to ground (cold lamp, solenoid, etc).

3.14.2

Maximum negative transients

that force the drains or sources of the outputs going -20V below the module ground.

3.14.3

Ground offsets

with a maximum of -0.5V to 1.0V between the L9848 ground and any load directly

connected to a chassis ground in the case of high side loads. If driving a low side load there

will not be an offset between the L9848 ground and the load ground. In addition there may

be a maximum ground difference between the L9848 ground and any other module

interfacing with it of -0.5V to 1.0V or ±VAC (10-200Hz).

3.14.4

Loss of ground operation

Any outputs are protected to become active in case of lost ground of the L9848 module with

the supply is still applied.