This part is a kind of semiconductor called AAT11671.

Function of this product has INTEGRATED TFT LCD POWER SOLUTION.

Manufacturers : Advanced Analog Technology

Image and pinout :

Some of the text within the PDF file :

Advanced Analog Technology, Inc. Product information presented is current as of publication date. Details are subject to change without notice. April 2009 AAT11671 INTEGRATED TFT LCD POWER SOLUTION FEATURES Built In 2A (Max.), 0.2Ω Switching NMOS Negative LDO Driver Down to –14V/+20mA VCOM Operational Amplifier Up to 350mA LDO Reset Signal Output for TCOM 28V High Voltage Switch for VGH Adjustable Soft-Start Function 1.2MHz Fixed Switching Frequency Fault and Thermal Protection Low Dissipation Current : Typical 2.3mA In Operation VQFN24-4*4 Package Available GENERAL DESCRIPTION The AAT11671 provides a step-up PWM controller, negative high voltage LDO drivers, low dropout linear regulator, VCOM operational amplifier and one high voltage switch (up to 28V) for TFT LCD display. RST p [ ... ]

AAT11671 PDF Datasheet Download