‘Intelligent’ power switch optimised for automotive applications

Optimised for automotive auxiliary positive temperature coefficient electric heaters, the device offers a low on state resistance of 4Ohm at 25°C, as well as higher current with a smaller heat sink to reduce system footprint. The 40V device also features current sensing to allow precise monitoring of load current in order to provide additional data to the microcontroller for diagnostic applications. Over current and over temperature protection is included as standard, which IR says results in more reliable operation even during short circuit protection, as well as smooth turn on and turn off waveform to limit EMI.