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WS3441

Applications
LED Candle Light
LED Bulb, Spot Light
T8/T10 LED String
Other LED Lighting

Features
Critical Conduction Mode Operation
Internal 500V Power MOSFET
No Auxiliary Winding
Ultra Low Operating Current
 ±3% LED Output Current Accuracy
Efficiency up to 93%
LED Open Protection
LED Short Protection
Current Sensing Resistor Short Protection
Thermal Regulation Function
Available in SOP-8 Package and DIP-7 Package

Structure Type

Part No.

MOS

Package

App. Watt

OVP

PDF

176-264Vac

90-264Vac

Non-isolation

PF0.5

WS3441

1A/650V

SOP8/DIP7

80V/200mA

150V/150mA

80V/150mA

External Set

WS3441.pdf 

Description
The WS3441 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 WS3441 integrates a 500V power MOSFET. 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.
The WS3441 utilizes patent pending current control method. It can achieve precise output current and excellent line regulation. The driver operates in critical conduction mode, the output current does not change with the inductance and LED output voltage.
The WS3441 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 WS3441 is available in SOP-8 Package and DIP-7 Package.

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Money Return

100% Guarentee

Return Policy

30 Days Service

Solution & Support

Call +86-755-8418 2951