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      2. PSR High Precision Constant Current Controller CL1226



        GENERAL DESCRIPTION

                   CL1226 is a PSR controller with excellent performance, integrating many types of protection functions. CL1226 works in discontinuous operating mode, suitable for the isolated LED driver with input voltage of 85Vac~265Vac and power dissipation of lower than 5W. The system component count is decreased furthest and the chip is offered in DIP8 package, reducing the space which CL1226 occupied. A high precision current sampling circuit is applied in

                   CL1226, the output current accuracy can be within ±3%. Besides, CL1226 has LED open/short protection, over current protection (OCP), VDD under voltage lockout (UVLO), etc.



        FEATURES

        ◆±3% LED Output Current Accuracy

        ◆PSR Constant Current Control

        ◆No Auxiliary Sensing/Power Supply Winding required

        ◆Extremely Low Working Current: 250μA (Typical)

        ◆Wide Input Voltage Range: 85Vac~265Vac

        ◆Internal integrated 650V Power MOSFET

        ◆LED Open/Short Protection

        ◆Primary Side Over Current Protection

        ◆VDD Under Voltage Lockout (UVLO)

        ◆Over Temperature Protection (OTP)



        APPLICATIONS

        ◆GU10 LED Lamp

        ◆LED Bulk Light

        ◆Other LED Lighting

        CL1226 is offered in DIP8 package




        TYPICAL APPLICATIONS



        PIN CONFIGURATION


        TERMINAL ASSIGNMENTS


        CL1226
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