Hangzhou Silan Microelectronics SD6602D

SD6602D is a high-precision, low-cost primary-side feedback LED constant-current driver IC designed for flyback isolated LED lighting applications. The IC operates in discontinuous conduction mode (DCM), suitable for input voltages of 90Vac~265Vac and output power below 12W. Using a proprietary constant-current control method, current accuracy is within ±3%, and the output current can be set via a peak current sense resistor. The IC integrates an internal 600V power MOSFET switch and adopts primary-side feedback control, eliminating the need for loop compensation and external components such as optocouplers, TL431, and transformer auxiliary windings, reducing system cost and board space. The IC integrates LED open/short-circuit protection, primary-side overcurrent protection, overvoltage protection, and over-temperature protection to enhance system reliability. Available in DIP-8-300-2.54 package.

• ±3% LED output current accuracy
• Primary-side feedback control without auxiliary winding
• High efficiency, low system cost
• Integrated 600V power transistor
• Built-in line voltage compensation
• No loop compensation required
• Built-in leading-edge blanking circuit
• LED short-circuit/open-circuit protection
• Primary-side cycle-by-cycle overcurrent protection
• CS pin short-circuit protection
• Undervoltage protection
• Over-temperature protection

• GU10 LED spotlight
• LED bulb
• PAR lamp
• Other LED lighting