This part is a kind of semiconductor called AME9001.

Function of this product has CCFL BACKLIGHT CONTROLLER.

Manufacturers : Analog Microelectronics

Image and pinout :

Some of the text within the PDF file :

AME, Inc. AME9001 CCFL Backlight Controller n General Description The AME9001 controller provides a cost efficient means to drive single or multiple cold cathode fluorescent lamps (CCFL). Specifically the AME9001 drives 3 external MOSFETs that, in turn, drive a wirewound transformer that is coupled to the CCFL. The AME9001 includes features such as soft start, duty cycle dimming control, and fault detection. It is designed to work with input voltages from 7V up to 24V. When disabled the circuit goes into a zero current mode. For applications that use a piezoelectric transformer please look at the AME9000. n Pin Configuration 24 23 22 21 20 19 18 17 16 15 14 13 AME9001 1 2 3 4 5 6 7 8 9 10 11 12 AME9001 24PIN QSOP 1. VREF 2. CE 3. SSC 4. RDELTA 5. FAULT [ ... ]

AME9001 PDF Datasheet Download