This part is a kind of semiconductor called A7530.

Function of this product has PFM STEP-UP DC-DC CONVERTER.

Manufacturers : Advanced Innovation Technology

Image and pinout :

Some of the text within the PDF file :

PFM STEP-UP DC-DC CONVERTER WITH HIGH EFFICIENCY AND LOW NOICE A7530 Description A7530 is CMOS-based PFM step-up DC-DC converter. The converter can start up by Features Deliver 200mA at 3.3V Output Voltage with 1.8V Input Voltage Low Start-Up Voltage @1mA:0.8V The Converter Output Voltage Can Be Adjusted From 2.5V~6.0V (in 0.1V step) Output Voltage Accuracy:±2% Low Temperature-Drift Coefficient of the Output Voltage: ±100ppm/ C Only Three External Components are needed: an Inductor, a Schottky Diode and an Output Filter Capacitor. High Power Conversion Efficiency: 85% Low Quiescent Current Drawn from Power Source: <7uA o supply voltage as low as 0.8V, and capable of delivering maximum 200mA output current at 3.3V output with 1.8V input voltage. Quiescent current drawn from power sou [ ... ]

A7530 PDF Datasheet Download