Str F6267 Datasheet Pdf

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

Integrated into power modules for various household electronics. Pinout and Installation

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: Operates as a quasi-resonant flyback converter, which helps achieve high efficiency (up to 95%) and significantly lower EMI noise compared to standard PWM solutions. Integrated Power MOSFET

electrolytic capacitor on Pin 4. If this capacitor loses capacitance or develops high ESR, the IC will cycle continuously between its UVLO start and stop thresholds. The chip is primarily designed for flyback converters

💡 If you are trying to find a replacement for a blown

A: No, unless you recalculate the primary current limit. The F6263 has a lower drain current rating (3.5A) and higher RDS(on). Always consult both datasheets. Package Type TO-3PF-5 / SIP-5 Overmolded Topology Support

Provides stable, regulated power for LED lamps and fixtures.

The remains a relevant and robust IC for linear-to-SMPS power supply upgrades and repairs. By understanding its key features and pinout from its datasheet , engineers can ensure reliable, efficient power regulation in their applications.

If the IC has no voltage on Pin 4 despite the main filter capacitor being charged to roughly 300V DC, inspect the high-value startup resistors for open-circuit failure.