Str F6267 Datasheet — Pdf
| Protection | Trigger Condition | Action | | :--- | :--- | :--- | | | ( V_S/OCP ) > 0.72V per cycle | Pulse-by-pulse duty cycle reduction. | | Overload (OLP) | FB pin voltage > threshold for >50ms | Latch-off (requires VCC power cycle to reset). | | Overvoltage (OVP) | ( V_CC ) > 24V (due to aux winding failure) | Latch-off. | | Thermal Shutdown (TSD) | Junction temp > 140°C | Soft shutdown; auto-recovery when temp drops 50°C hysteresis. |
The internal architecture of the STR-F6267 is what makes it a highly integrated solution. It combines:
A typical application circuit diagram, available in the official datasheet, will show the STR-F6267 connected to a flyback transformer, an optocoupler for feedback, and a few passive components like resistors and capacitors. The circuit usually includes an AC input rectifier, a bulk capacitor, and the output rectification stage. The IC's internal oscillator and control logic manage the switching of the MOSFET to regulate the output voltage based on the feedback signal.
A common repair scenario involves a Sony TV that died after a lightning strike. In one such case, the following were the findings:
The chip is primarily designed for flyback converters operating in current-mode control. By combining control logic and high-voltage power switching elements, it achieves an efficiency rating of up to 95% in optimized applications. STR-F6267 Technical Specifications Specification / Value Sanken Electric Co., Ltd. Package Type TO-3PF-5 / SIP-5 Overmolded Topology Support Off-line Switched-Mode Flyback Regulators Control Method Current Mode PWM Controller Max Operating Temperature 105°C (Ensures reliability in high-heat layouts) Key Built-in Features Frequency Jittering, Soft Start, Thermal Shutdown Pinout Configuration and Functional Descriptions str f6267 datasheet pdf
Capable of reaching up to 95% efficiency , which reduces heat and saves energy. ⭐ Expert Review & Performance
Reliable performance in high-heat environments up to
Disclaimer: The values in this report are typical from historical datasheets (circa 2005-2015). Always consult the latest official Sanken datasheet for your specific revision before designing or repairing any power supply.
While the exact pinout can vary slightly depending on the package, the typical functions of the 5 pins on the STR-F6267, as referenced in its datasheet, are: | Protection | Trigger Condition | Action |
Note: Some references mention additional pins (up to 8) for specific variants or synchronization inputs, so always check your physical chip's configuration.
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Understanding the pinout is critical for troubleshooting or replacing this IC. The standard configuration for the 5-pin package is:
The STR-F6267 datasheet outlines several critical attributes that make it a robust choice for power conversion: | | Thermal Shutdown (TSD) | Junction temp
The STR-F6267 is a versatile IC and can be found in a wide range of electronic devices where efficient and reliable power conversion is required. Its datasheet lists typical applications including:
STR-F6267 Datasheet PDF: Ultimate Guide to the Flyback Switching Regulator
Finding the exact "STR-F6267" datasheet can sometimes be difficult because Sanken often groups components under series datasheets.
The STR-F6267 features built-in frequency jittering. By slightly shifting the switching frequency back and forth over a set range, the IC spreads peak EMI energy across a wider bandwidth, drastically easing compliance with strict RF noise standards. STRF6267 Sk | | Xecor
(Note: Always refer to the specific Sanken STR-F6267 PDF datasheet to confirm pin functions in your particular application). Typical Application Circuit