Primary side PWM converter for SMPS, commonly used in televisions (like Sony models), CRT monitors, and general industrial power supplies.
The STR-F6267 series is widely recognized for its robust performance in consumer electronics, including television power supplies, monitors, and industrial equipment requiring regulated off-line switching power.
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The STR-F6267 belongs to the STR-F6200 series of regulators. It is widely used in consumer electronics like CRT televisions, monitors, and audio power supplies due to its robust protection features and minimal external component requirements. Key Features Avalanche-energy guaranteed. Low Startup Current: Only maximum startup current.
Based on the features and applications of the STR F6267, we recommend: Primary side PWM converter for SMPS, commonly used
This IC is versatile and can be found in various modern electronic systems: STRF6267 Sk - Avaq Semiconductor
| Pin Number | Name/Function | Description | | :--- | :--- | :--- | | | GND / Source | Ground reference for the control circuit and the source connection of the internal power MOSFET. | | 2 | VCC | Power supply pin for the IC. Provides operating voltage for the internal control logic. Requires a stabilizing capacitor. | | 3 | FB / Feedback | Feedback input pin. Connects to the secondary side via an optocoupler to regulate the output voltage. | | 4 | CS / Current Sense | Current Sense pin. Monitors the primary current via an external sense resistor. Used for overcurrent protection and feedback control. | | 5 | DRAIN | Drain pin of the internal high-voltage MOSFET. Connects to the primary side of the switching transformer. | 🛠️ Key Applications The STR-F6267 belongs to the
Utilizing a quasi-resonant or PWM approach tailored to the load. Robust Protection Mechanisms: OCP (Overcurrent Protection): Pulse-by-pulse limiting.
The STR-F6267 remains a reliable choice for flyback designs under 80W. However, do not rely on a decade-old printout. from Allegro or a verified distributor to get the latest thermal derating curves and PCB layout guidelines.
While the STR-F6267 is quite specific, ensure any replacement is a genuine Sanken component , as cheap clones may not handle thermal loads correctly. Conclusion
datasheet or purchasing the IC can be done through several reliable electronics distributors: