Designed for modern Switch Mode Power Supplies (SMPS), the IC includes several built-in functions to enhance performance:
such as televisions, monitors, and set-top boxes. Industrial SMPS circuits and LED drivers.
Features a high-voltage power MOSFET, making it suitable for direct off-line operation.
It was commonly used in CRT televisions (e.g., Sony Wega Trinitron series, Samsung D61B chassis), VCD/DVD players, set-top boxes, and other consumer electronics requiring a compact, low-standby power supply up to ~85W. str f6267 datasheet pdf upd
Always check the section in the STR F6267 datasheet PDF for "Active," "NRND" (Not Recommended for New Designs), or "Obsolete."
The most definitive test is to replace the IC with a known good component. However, before doing so, always perform the secondary-side checks mentioned in the troubleshooting guide. A shorted horizontal output transistor (HOT) or vertical deflection IC can also cause the power supply to shut down, mimicking a primary-side failure.
: Motor drivers and industrial power supply units. Datasheet Resources Designed for modern Switch Mode Power Supplies (SMPS),
STR-F6267 Datasheet PDF: Updated Technical Guide and Application Insights
Receives signal from the optocoupler to regulate output voltage. Ground (GND): Common reference point. Core Features
You can find and download the official STR-F6267 datasheet from major electronic component databases: It was commonly used in CRT televisions (e
The internal PWM controller oscillates at a fixed frequency modified by a frequency jittering algorithm. This jittering slightly modulates the switching clock, spreading the radio frequency energy across a wider bandwidth to simplify compliance with global EMI standards. Regulation Loop
: Capable of reaching high efficiency levels up to 95% .