Necessary cookies
Cookies needed for the website to work and provide a good and safe user experience.
Analytical cookies
Cookies that are used to analyze how you as a visitor use our website, which in turn helps us to improve the website.
Str F6267 Datasheet Pdf __full__ Online
Includes built-in overcurrent protection (OCP), overvoltage protection (OVP), and thermal shutdown (TSD). Soft Start:
The Sanken STR-F6267 is a powerful and efficient solution for offline switching power supplies, especially in quasi-resonant designs. Its high level of integration, combining a power MOSFET, control logic, and protection features, allows for reliable and compact power supply units. 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. | | Pin Number | Pin Name | Function
Circuit Diagram Note: A complete schematic is available in the original PDF, but the typical topology is a quasi-resonant or fixed-frequency flyback with a 67kHz switching frequency. | | 2 | Vcc | Power Supply Pin
The STR-F6267 is a highly integrated PMIC that offers high-performance power management and low power consumption. The datasheet PDF provides a comprehensive overview of the IC's features, specifications, and application notes. While there are some limitations to the documentation, overall, the datasheet is well-organized, and the information is easy to find.
The main advantage of using the STR-F6267 is its comprehensive suite of protection circuits, which safeguard the power supply against severe field failures:
Note: The tab of the TO-220F package is internally connected to the DRAIN (pin 5) and must be isolated from the heatsink.