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WS9841 Datasheet Preview

WS9841 Datasheet

High Efficiency TRIAC dimmable LED

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WS9841 Product Description
WS9841 High Efficiency TRIAC dimmable LED
Features
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
Driver
Description
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.
Typical Application Circuit
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
Copyright@Winsemi Microelectronics Co., Ltd., All right reserved.
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
B1 1222




Winsemi

WS9841 Datasheet Preview

WS9841 Datasheet

High Efficiency TRIAC dimmable LED

No Preview Available !

WS9841 Product Description
Pin Definition and Device Marking
WS9841 is available in SOP-8 package
WS9841S8PProduct Code
AProduct Code
XInternal Code
BCYInternal QC Code
YMXD/C
Package Pin Definition
Pin name
Pin No.
GND
1
VLN 2
FB 3
VCC
4
DRAIN
5,6
CS 7,8
Description
Ground
Line Voltage Detecting Pin
Over Voltage Protection Detecting Pin.
Power Supply Pin
Internal HV Power MOSFET Drain.
Current Sense Pin. Connect a sensing resistor between this pin and GND pin.
Block Diagram
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
www.winsemi.com Tel : +86-755-8250 6288 Fax : +86-755-8250 6299
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
2/8


Part Number WS9841
Description High Efficiency TRIAC dimmable LED
Maker Winsemi
Total Page 8 Pages
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