Str - F6267 Datasheet Pdf !free!

The STR-F6267 integrates a primary control and drive circuit with a robust, avalanche-guaranteed power MOSFET on a single silicon substrate. Packaged in a standard , it significantly reduces external component count, minimizes printed circuit board (PCB) footprint, and enhances overall system reliability.

The from Sanken remains a relevant and powerful solution for designing off-line flyback converters. Its integration of a quasi-resonant controller with a high-voltage MOSFET provides an optimal balance of efficiency, simplicity, and reliability for a wide array of consumer and industrial electronics. str f6267 datasheet pdf

| Pin Number | Pin Name | Function Description | | :--------- | :------------- | :----------------------------------------------------------------------------------------------------------------------------------- | | 1 | | Ground Pin. The reference ground for the IC's control circuit. It must be connected to the primary-side ground in the PSU. | | 2 | Vcc | Power Supply Pin. Supplies the operating voltage to the internal controller (typically around 15-18V). This voltage is usually derived from an auxiliary winding on the transformer. | | 3 | FB | Feedback Pin. Receives the feedback signal from the secondary side (usually via an optocoupler) to regulate the output voltage. | | 4 | CS | Current Sense Pin. Monitors the primary current via an external sense resistor to detect overcurrent conditions and for cycle-by-cycle current limiting. | | 5 (or 8)* | DRAIN | Power Switching Pin. The drain terminal of the internal high-voltage power MOSFET. It is connected to the primary winding of the flyback transformer. | | 6 | SYNC | Synchronization Input Pin. Allows the switching frequency to be synchronized with an external clock for system-level timing coordination. May not be present on all variants (check datasheet). | | 7 | CT | Soft Start Time Setting Pin. An external capacitor connected to this pin sets the soft-start duration. | | 8 | DTC | Duty Taper Control Pin. Used to control the maximum duty cycle of the PWM output. | The STR-F6267 integrates a primary control and drive

– The control circuitry reference ground pin. Its integration of a quasi-resonant controller with a

Though typically found in a 5-pin configuration, the internal controller logic manages several critical tasks: Pin Number Description System ground connection. Power supply input for the internal control logic. Feedback input used to regulate the output voltage.

is a high-performance, off-line switching regulator IC specifically designed for Quasi-Resonant Flyback converters. Manufactured by Sanken Electric