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USR3652

HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH; including Cycle-by-cyclecurrent limiting, VDD over voltage protection, VDD clamp, OTP,leading edge blanking, VDD under voltage lockout, etc.?FEATURES? Built-in 650V Power MOSFET ±5% constant voltage regulation at universal AC input High precision constant current regulation at universal AC input Primary side control without TL431 and opto-coupler Programmable CV and CC regulation Programmable cable compensation in CV mode Flyback topology in DCM operation Frequency hopping to reduce system EMI Built-in leading edge blanking Built-in primary winding inductance compensation Power on soft start Gate Output Maximum Voltage Clamped at 15V Cycle-by-cycle current limiting Over voltage protection VDD under-voltage lockout;

The UTC USR3652 is a primary control switch mode chargerand adapter applications. The controlled variable is transferred byan auxiliary winding from the secondary to the primary side. Thedevice integrates PWM controller to enhance the performance ofdiscontinuous conduction mode (DCM) flyback converters.The UTC USR3652 operates in primary-side sensing andregulation. Opto-coupler and TL431 could be eliminated. It alsoprovides off-time modulation to linearly decrease PWM frequencyunder light-load conditions so that low standby power can beachieved.The UTC USR3652 achieves high precision CV/CC regulationand high power efficiency. It offers comprehensive protectioncoverage with auto-recovery

USR3652

HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH

USR3652G-S08-R

HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH

USR3652L-S08-R

HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH

USR3652S

HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH

USR3652SG-D08-T

CMOS IC

USR3652SG-D08-T

HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH

USR3652SL-D08-T

CMOS IC

USR3652SL-D08-T

HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH