WS9841 Product Description
WS9841 High Efficiency TRIAC dimmable LED
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
LED Candle Light
Other LED Lighting
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
The WS9841 is available in a SOP-8 Package.
Typical Application Circuit
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