Str F6267 Datasheet Pdf Updated

Pay attention to Figure 6: "Quasi-Resonant Operation." The updated datasheet adds notes on valley switching, which reduces turn-on loss. The IC detects voltage dips on the Drain after demagnetization.

The STR-F6267 is a current‑mode PWM controller with an integrated high‑voltage MOSFET, designed for flyback converter topologies in low‑to‑medium power applications. It belongs to the STR‑F6200 series, typically used in AC‑DC adapters, standby power supplies, and auxiliary power for consumer electronics (TVs, monitors, white goods).

Key features (typical of the series):

The reference design shows a typical 150W flyback converter. Key external components include: str f6267 datasheet pdf updated

Older versions of the STR-F6267 datasheet circulating on random server sites often miss critical application notes regarding:

Q1: Is STR F6267 obsolete? A: While not in active high-volume production, it is classified as "NRND" (Not Recommended for New Designs) by Sanken. However, updated datasheets are maintained for repair and legacy manufacturing. The “updated” status refers to revisions clarifying thermal data and OCP thresholds.

Q2: Can I replace STR F6267 with STR F6268? A: No. The F6268 has a higher Rds(on) and lower current rating (6A vs 8A). Using it in a 150W design designed for the F6267 will cause overheating and premature failure. Always verify the suffix. Pay attention to Figure 6: "Quasi-Resonant Operation

Q3: Does the updated PDF include PCB layout guidelines? A: Yes. The latest revision adds a dedicated section on Kelvin connection for the Source pin to prevent false OCP triggering due to common impedance coupling.

Q4: What is the expected switching frequency? A: The frequency varies with load and line voltage, ranging from 20kHz (heavy load) to 120kHz (light load). At no load, it drops to burst mode (~500Hz bursts).

| Parameter | Value | Unit | |--------------------------|--------------|------| | Drain‑source voltage | 700 | V | | Drain current (pulsed) | ~8 (check) | A | | VCC voltage | 32 | V | | FB pin voltage | -0.3 to +7 | V | | Operating junction temp. | -20 to +125 | °C | | Storage temp. | -40 to +150 | °C | ⚠️ These are typical

⚠️ These are typical. The updated datasheet may show higher/lower ratings, especially for VCC OVP trip point.

To avoid the old, corrupted, or watermarked versions floating around on generic document sites, you can download the official updated PDF directly from our component library.

[Click here to download STR-F6267 Datasheet (PDF, 380kb)]