The output stage is able to source simultaneously 400 mA on each of the 16 power lines (columns) with a duty cycle of 33% in normal printing and 66% in head pre-heating. On the address lines (rows), the load is only capacitive (MOS FET driving capability). The driver can control two print heads, but only one is active at a time. The address scanning counter is included and can be disabled to allow a different scanning scheme.
In order to avoid output activation during the supply transient, an internal power-up system is implemented.
As supporting function, L6452 is capable of sensing the head silicon temperature and to electrically check each nozzle.
The device is also integrating a thermal protection.