WS9252 Datasheet, PDF (1/8 Pages) List of Unclassifed Manufacturers – High Precision PSR Constant Current LED Driver

WS9252ProductDescription
High Precision PSR Constant Current LED Driver
Features
 Constant current control without secondary sense and
feedback circuit.
 ±3% LED current accuracy
 Ultra low operating current to improve efficiency
 High resistance feedback resistor to improve efficiency
 Universal input voltage
 LED short and open circuit protection
 VCC under-voltage protection
 Feedback loop short circuit protection
 Current sense resistor open circuit protection
 Over temperature protection
 No external loop compensation component required
 Available in SOT23-5 package
Applications
 GU10/E27 LED bulb, spot light
 Other LED lighting
Description
The WS9252 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 extremely suitable for buckboost/flyback convertor
under universal input.
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 low component counts and low BOM cost
are realized.
Since using the proprietary high accurate current
sense method, theWS9252 realizes ±3% accuracy of LED
current along with excellent line regulation and load
regulation.
The WS9252 offers rich protection functions including
LED short circuit protection, LED open circuit protection,
die over-temperature protection, VCC over voltage
protection, VCC under voltage protection and FB short
circuit protection. All the protection features are
auto-recovery.
Typical Application
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
Copyright@WinsemiMicroelectronics Co.,Ltd.,All rightreserved.
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
1208