This part is a kind of semiconductor called A8498.

Function of this product has Wide Input Voltage 3.0 A Step Down Regulator.

Manufacturers : Allegro MicroSystems

Image and pinout :

Some of the text within the PDF file :

A8498 Wide Input Voltage 3.0 A Step Down Regulator Features and Benefits ▪ ▪ ▪ ▪ ▪ 8 to 50 V input range Integrated DMOS switch Adjustable fixed off-time Highly efficient Adjustable 0.8 to 24 V output Description The A8498 is a step down regulator that will handle a wide input operating voltage range. The A8498 is supplied in a low-profile 8-lead SOIC with exposed pad (package LJ). Applications include: ▪ Applications with 8 to 50 V input voltage range needing buck regulator for 3.0 A output current ▪ Consumer equipment power ▪ Uninterruptible power supplies (lead acid battery charger) ▪ Automotive telematics: 9 to 16 V input, with higher voltage protection ▪ 12 V lighter-powered applications (portable DVD, etc.) ▪ Point of Sale (POS) application [ ... ]

A8498 PDF Datasheet Download