This part is a kind of semiconductor called NCV8401A.

Function of this product has Self-Protected Low Side Driver.

Manufacturers : ON Semiconductor

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Some of the text within the PDF file :

NCV8401, NCV8401A Self-Protected Low Side Driver with Temperature and Current Limit NCV8401/A is a three terminal protected Low-Side Smart Discrete device. The protection features include overcurrent, overtemperature, ESD and integrated Drain-to-Gate clamping for overvoltage protection. This device offers protection and is suitable for harsh automotive environments. Features • Short Circuit Protection • Thermal Shutdown with Automatic Restart • Over Voltage Protection • Integrated Clamp for Inductive Switching • ESD Protection • dV/dt Robustness • Analog Drive Capability (Logic Level Input) • NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable • These Devices are Pb−Free and are R [ ... ]

NCV8401A PDF Datasheet Download