Str F6267 Datasheet Pdf

The STR-F6267 is a high-performance, off-line switching regulator IC developed by Sanken Electric. It is specifically designed for use in Quasi-Resonant Flyback switching power supplies (SMPS) to provide high efficiency and low electromagnetic interference (EMI). 1. Key Features and Functional Overview

• STR F6267 vs 2–3 similar power ICs: strengths/weaknesses (power rating, features, cost).

7. Protection Modes Explained

| Protection | Trigger Condition | Action | | :--- | :--- | :--- | | Overcurrent (OCP) | ( 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. | str f6267 datasheet pdf

Protects the device from overheating during prolonged high-load operation Soft Start: STR F6267 vs 2–3 similar power ICs: strengths/weaknesses

• Device Category: AC-DC Switching Power Supply Controller (Hybrid IC).
• Internal Components:

  The Importance of the Datasheet

  The STR-F6267 pinout is critical for correct integration. While specific pin roles can vary by application, they generally include: Drain: Connection to the transformer primary. Source: Ground or current sensing point. VCC: Power supply input for the control IC. Feedback (FB): Used for output voltage regulation. threshold for &gt

  AC-DC Adapters: Used in chargers for laptops and mobile devices.

  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.