This part is a kind of semiconductor called APS1006.

Function of this product has 600mA Synchronous Step-Down Converter.

Manufacturers : APSemi

Image and pinout :

Some of the text within the PDF file :

A1468 Three-Wire True Zero-Speed Differential Peak-Detecting Sensor IC with Continuous Calibration Features and Benefits • 4.0 to 26.5 V supply operating range • Minimum differential field 20 Gpk-pk • Running mode calibration for continuous optimization • Single chip IC for high reliability • Precise duty cycle signal throughout operating temperature range • Large operating air gaps • Automatic Gain Control (AGC) for air-gap–independent switchpoints • Automatic Offset Adjustment (AOA) for signal processing optimization • True zero-speed operation • Undervoltage lockout • Reverse battery protection • Scan and IDDQ for increased test coverage Description The A1468 is an optimized Hall effect sensing IC that provides a user-friendly solution for digital ring-magnet [ ... ]

A1468 PDF Datasheet Download