This part is a kind of semiconductor called FAN301.
Function of this product has PWM Controller.
Manufacturers : Fairchild Semiconductor
Image and pinout :
Some of the text within the PDF file :
FAN301 PWM Controller for Low Standby Power Charger Applications July 2010 FAN301 PWM Controller for Low Standby Power Charger Applications Features Ultra-Low Standby Power Under 20mW at 264VAC Constant-Current (CC) Control without SecondaryFeedback Circuitry Green Mode: PWM Frequency Linearly Decreasing Fixed PWM Frequency at 45kHz with Frequency Hopping to Solve EMI Problems High-Voltage Startup Low Operating Current: 3mA Peak-Current-Mode Control in CV Mode Cycle-by-Cycle Current Limiting VDD Over-Voltage Protection (Auto-Restart) VDD Under-Voltage Lockout (UVLO) Gate Output Maximum Voltage Clamped at 15V Fixed Over-Temperature Protection (Auto-Restart) Description This highly integrated PWM controller, FAN301, provides features to enhance the [ ... ]
FAN301 PDF Datasheet Download
