BP9938X - Non-isolated step-down LED constant current driver chip

Features​

• No VCC Capacitor and Startup Resistor
• Internal 500V Power MOSFET
• Integrated HV JFET for IC Power Supply
• No Auxiliary Winding
• Critical Conduction Mode Operation
• ±5% LED Output Current Accuracy
• LED Short Protection
• VCC Under Voltage Protection
• Thermal Regulation Function
• Available in SOT33-4 Package

Applications​

• LED Candle Light
• LED Bulb
• Other LED Lighting