Str F6267 Datasheet Pdf Upd Jun 2026

| Symptom | Likely Cause | Datasheet Check Point | Solution | |---------|--------------|------------------------|-----------| | VCC cycles between 8V and 15V | Startup circuit fails or OLP (Overload) triggered | Check UVLO on/off thresholds (typically 15V on, 8.5V off) | Replace startup resistor or check secondary short | | No output, drain pin shows 320V but IC not switching | VCC pin voltage <15V | Measure VCC pin voltage during operation | Auxiliary winding may be open | | IC heats up rapidly | Overcurrent or MOSFET Rds(on) degradation | Check OCP threshold voltage (0.7V typical) | Replace current sense resistor (0.47Ω) | | Random shutdown under load | Thermal shutdown (TSD) activated | TSD temperature >140°C (from datasheet) | Improve heatsinking or reduce ambient temperature |

Based on standard datasheet documentation, the typical pinout for this series includes: : Drain/Startup terminal for the MOSFET. : Source/Overcurrent Protection terminal. : Power supply input for the control circuit. : Ground terminal. : Feedback terminal for constant voltage control. Primary Applications Consumer Electronics str f6267 datasheet pdf upd