This part is a kind of semiconductor called AP3041.

Function of this product has Boost Controller for WLED Driver in Medium-sized LCD Panel.

Manufacturers : BCD Semiconductor

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Data Sheet Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041 General Description The AP3041 is a current mode high voltage low-side channel MOSFET controller, which is ideal for boost regulators. It contains all the features needed to implement single-ended primary topology DC/DC converters. The input voltage of AP3041 ranges from 5V to 27V. Its operation frequency is adjustable from 100kHz to 1MHz. The AP3041 has UVLO (Under Voltage Lock Out) circuit. It uses two external resistors to set the UVLO voltage. The AP3041 also has an over output voltage protection to limit the output voltage. The OVP voltage can be set through external resistors. If the output voltage is higher than the OVP high threshold point, it will disable the driver and the system is latched up. The out [ ... ]

AP3041 PDF Datasheet Download