优势供应PT4223，原装，深圳现货，原边反馈恒流LED驱动IC

PT4223   1-5W Primary Side CC Regulator

性能描述：

        The PT4223 is primary side constant current regulator, which is designed for high performance and cost-effective LED lighting applications. With Powtech’s proprietary constant current compensation technique accurate output current regulation is achieved without the need of a secondary feedback circuitry. Integrated primary inductance compensation circuitry provides accurate constant current operation despite variations in primary inductance. Excellent  EMI performance is achieved with frequency jittering function together with soft driving control at totem pole gate drive output.
       The device  integrates a high voltage power switch, an oscillator, a current sense circuit, CC control  circuit. It also features a complete set of integrated  protection functions to protect against all fault  conditions including output open/short circuit, line under-voltage, and over temperature shut down.
       The PT4223 is available in an SOP-7, SOP-8 package.
                                                 

特点：

·  CC Without Secondary Feedback
· Integrates 600V Power Switch
· Inductance Compensation
· Low Startup Current (<10uA)
· Adjustable Primary Side Current limit
· VCC/FB Over Voltage Protection
· VCC/FB UVLO
· Feedback Loop Open Circuit Protection
· Over Temperature Protection

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