This part is a kind of semiconductor called BD9486F.

Function of this product has LED Drivers.

Manufacturers : ROHM

Image and pinout :

Some of the text within the PDF file :

Datasheet LED Drivers for LCD Backlights 1ch Boost up type White LED Driver for large LCD BD9486F 1.1 General Description BD9486F is a high efficiency driver for white LEDs and is designed for large LCDs. BD9486F has a boost DCDC converter that employs an array of LEDs as the light source. BD9486F has some protect functions against fault conditions, such as over-voltage protection (OVP), over current limit protection of DCDC (OCP), LED OCP protection, and Over boost protection (FBMAX). Therefore it is available for the fail-safe design over a wide range output voltage. Key Specifications     Operating power supply voltage range:9.0V to 18.0V Oscillator frequency of DCDC: 150kHz (RT=100kΩ) Operating Current: 2.6mA(Typ.) Operating temperature range: -40°C to +85°C W(Typ) x [ ... ]

BD9486F PDF Datasheet Download