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Winsemi - High Precision PSR Constant Current LED Driver

Numéro de référence WS9226
Description High Precision PSR Constant Current LED Driver
Fabricant Winsemi 
Logo Winsemi 





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WS9226 fiche technique
WS9226ProductDescription
High Precision PSR Constant Current LED Driver
Features
Built-in650V Power MOSFET
Constant current control without secondary sense and
feedback circuit.
No Auxiliary winding for sensing and supplying
Ultra low operating current to improve efficiency
Universal input voltage
±5% LED current accuracy
LED short and open circuit protection
VCC under-voltage protection
Over temperature protection
Available in DIP-8 package
Applications
LED bulb, spot light
Other LED lighting
Description
The WS9226 is a high precision primary-side feedback
and regulation controller for LED lighting, it operates in
constant current control mode and is designed to work in
inductor current discontinuous conduction mode and
especially suitable for flyback convertor under universal input.
The output power of system is recommended to less than
24W.
The WS9226integrates 650V power MOSFET. Since
adopting primary sense and feedback control technology, the
secondary sense and feedback circuit is eliminated. The loop
compensation components are also removed while
maintaining stability overall operating conditions. The
operating current is very low, and it doesn’t need the auxiliary
winding for sensing the output current and supplying the chip.
The low component counts and small system size are
realized.
Since using the proprietary high accurate current sense
method, theWS9226 realizes ±5% accuracy of LED current
along with excellent line and load regulation.
The WS9226 offers rich protection functions including
LED open/short circuit protection, over-temperature
protection, VCC under voltage protection.
Typical Application
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
Copyright@WinsemiMicroelectronics Co.,Ltd.,All rightreserved
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
1117

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