TRIAC dimmable

Internal 300V Power MOSFET

Critical Conduction Mode Operation

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

Available in SOP-8 Package

Typical Appliction

LED Candle Light

LED Bulb

Other LED Lighting

 

Structure Type		Part No.	MOS	Package	App. Watt		OVP	PDF
					176-264Vac	90-264Vac
Controller IC	-	WS9841	3A/300V	SOP8	54V/180mA(90-130Vac)		External Set

 

The WS9841 is a high efficiency TRIAC dimmable LED driver. The device operates in critical conduction mode and is suitable for buck, buck-boost or fly-back LED lighting.

The WS9841 integrates a 300V power MOSFET. It utilizes patent pending MOSFET driving technique and current sensing method. The operating current of the IC is very low. With very few external components count, it can achieve excellent constant current performance, so the system cost and size are greatly reduced.

The WS9841 offers rich protection functions to improve the system reliability, including LED open circuit protection,LED short circuit protection, VCC under voltage protection,CS resistor short circuit protection and thermal regulation function.

The WS9841 is available in a SOP-8 Package.