This part is a kind of semiconductor called BD9483F.

Function of this product has White LED Driver.

Manufacturers : Rohm

Image and pinout :

Some of the text within the PDF file :

Datasheet LED Drivers for LCD Backlights White LED Driver for large LCD Panels (DCDC Converter type) BD9483F,FV ●General Description BD9483F,FV is a high efficiency driver for white LEDs and designed for large LCDs. This IC is built-in 2ch boost DCDC converters that employ an array of LEDs as the light source. BD9483F,FV has some protect function against fault conditions, such as the over-voltage protection (OVP), the over current limit protection of DCDC (OCP), Max duty protection, LED OCP protection. Therefore BD9483F,FV is available for the fail-safe design over a wide range output voltage. ●Key Specification  Operating power supply voltage range:11.0V to 35.0V  Oscillator frequency: 150kHz (RT=100kΩ)  Operating Current: 3mA (typ.)  Operating temperature range: -40°C [ ... ]

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