XCL303/XCL304 Series ■ BLOCK DIAGRAM L1 L2 Inductor AV DD Phase Current Sense PVDD FB Compensation Current Limiter AVDD Error Amp PWM Comparator - V REF - PWM/PFM Buffer VREF VIN start up + Controller Logic Driver Controller + Each LX Circuit CE CE Controller Logic RAMP Wave Oscillator Generatar PVDD AVDD VIN UVLO GND * Diodes inside the circuit are an ESD protection diode and a parasitic diode. ■PRODUCT CLASSIFICATION ●Ordering information XCL303①②③④⑤⑥-⑦ PWM Control XCL304①②③④⑤⑥-⑦ PWM/PFM Automatic Switching Control DESIGNATOR ITEM SYMBOL DESCRIPTION ① Product Type A Refer to Selection Guide ②③ Feedback Voltage 05 Feedback Voltage is fixed at 0.5V ④ Oscillation Frequency 2 2.5MHz ⑤⑥-⑦ (*1) Packages (Order Unit) KR-G CL-2025-02 (3,000pcs/Reel) (*1) The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant. ●Selection Guide OUTPUT CHIP CURRENT SOFT TYPE UVLO VOLTAGE ENABLE LIMIT START A External set Yes Yes Yes Yes 2/24
