Hangzhou Silan Microelectronics SDH7611STR

SDH7611S is a high-precision, low-cost primary-side feedback LED constant-current driver IC for flyback isolated LED lighting. The IC operates in discontinuous inductor current mode, suitable for 90Vac~265Vac input voltage and 5W output power. Integrated 650V high-voltage power MOS with built-in high-voltage startup circuit enables autonomous power supply without startup resistors or auxiliary windings; no external VCC capacitor required; significantly reducing system cost. Multiple protection features are integrated internally, including OVP and over-temperature regulation, enhancing system safety and reliability. Housed in SOP-7-255-1.27 package.

• ±3% LED output current accuracy
• Integrated 650V high-voltage power MOS
• Integrated high-voltage startup module
• No VCC capacitor required
• No loop compensation required
• LED open-circuit protection
• Undervoltage protection
• Over-temperature regulation, no auxiliary winding required

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