This post explains for the Buck Offline LED Driver.
The Part Number is BP2832A.
The function of this semiconductor is Non-isolated Buck Offline LED Driver.
The package is SOP 8 Pin Type
Preview images :
The BP2832A is a high precision buck constant current LED driver. The device operates in critical
conduction mode and is suitable for 85Vac~265Vac universal input offline LED lighting.
The BP2832A integrates a 500V power MOSFET. With patent pending MOSFET driving technique, the
operating current of the IC is very low. So it doesn’t need the auxiliary winding for supplying the chip. It can achieve excellent constant current performance with very few external components, so the system cost and size are minimized. […]
. Critical Conduction Mode Operation
. Internal 500V Power MOSFET
. No Auxiliary Winding
. Ultra Low Operating Current
. ±5% LED Output Current Accuracy
. LED Open Protection
. LED Short Protection
. Current Sensing Resistor Short Protection
. VCC Under Voltage Protection
. Thermal Regulation Function
. LED Candle Light
. LED Bulb
. Other LED Lighting