VNI4140K

The VNI4140K is a monolithic device made using STMicroelectronics VIPower technology, intended for driving four independent resistive or inductive loads with one side connected to ground. Active current limitation of VNI4140K avoids dropping the system power supply in case of shorted load. Built-in thermal shut-down protects the chip from overtemperature and short circuit. In overload condition, channel turns OFF and back ON automatically so as to maintain junction temperature between TTSD and TR. If this condition makes case temperature reach TCSD, overloaded channel is turned OFF and will restart only when case temperature has decreased down to TCR. In case of more than one channel in overload, re-start of the overloaded channels will not be simultaneous, in order to avoid high peak current from the supply. Non overloaded channels continue to operate normally. The open drain diagnostics outputs of VNI4140K indicates over-temperature conditions.