This part is a kind of semiconductor called AAT1164C.

Function of this product has TRIPLE-CHANNEL TFT LCD POWER SOLUTION.

Manufacturers : Advanced Analog Technology

Image and pinout :

Some of the text within the PDF file :

Advanced Analog Technology, Inc. April 2007 AAT1164/AAT1164B/AAT1164C Product information presented is current as of publication date. Details are subject to change without notice. TRIPLE-CHANNEL TFT LCD POWER SOLUTION WITH OPERATIONAL AMPLIFIERS FEATURES Built in 3A, 0.2Ω Switching NMOS Positive LDO Driver Up to 28V/5mA GENERAL DESCRIPTION The AAT1164/AAT1164B/AAT1164C is a triple-channel TFT LCD power solution that provides a step-up PWM controller, two high voltage LDO drivers (one for positive voltage and one for negative voltage), five operational amplifiers, and one high voltage switch up to 28V for TFT LCD display. The PWM controller consists of an on-chip voltage reference, oscillator, error amplifier, current sense circuit, comparator, under-voltage lock [ ... ]

AAT1164C PDF Datasheet Download