Str F6267 Datasheet Pdf [ EXTENDED ✪ ]
Sanken STR-F6267 is an integrated circuit (IC) designed specifically for off-line quasi-resonant flyback switching regulators
. It combines a high-voltage power MOSFET and a controller in a single package to provide stable and efficient power regulation for applications like TVs and VCRs. Key Features & Functionality Quasi-Resonant Topology
: 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
: Includes a built-in power MOSFET and a current-mode controller in one 5-pin package, reducing external component count. Advanced Control
: Features a frequency jittering circuit to further minimize EMI and a feedback mechanism for precise voltage regulation. Soft Start Functionality
: Ensures a gradual and controlled power-up sequence to prevent excessive stress on components during start-up. Built-in Protections Over-Current Protection (OCP)
: Uses cycle-by-cycle current limiting to protect against output overloads. Thermal Shutdown (TSD)
: Automatically shuts down the IC if internal temperatures exceed safe operating limits. Under-Voltage Lock-Out (UVLO) str f6267 datasheet pdf
: Prevents the IC from operating at insufficient supply voltages, ensuring reliable startup and shutdown cycles. Technical Specifications Description Manufacturer Sanken Electric Package Type 5-pin SIP / TO-3P Primary Application Off-line SMPS (Switching Mode Power Supplies) Core Functions Switching regulator, current mode controller Efficiency Common Applications Color TV and VCR power supplies. AC/DC adapters and battery chargers. LED and motor drivers. Alltronic Computer Singapore For a full technical analysis, you can view the STR-F6267 Datasheet AllDatasheet Jotrin Electronics or a specific pinout diagram for this IC?
STR-F6267 SANKEN Discrete Semiconductors - Jotrin Electronics
The STR-F6267 is an off-line switching regulator IC developed by Sanken. It is designed for use in power supply circuits, integrating a power MOSFET and a current-mode PWM controller into a single 5-pin package. 📄 Quick Datasheet Summary Manufacturer: Sanken Package Type: 5-pin SIP (Single In-line Package) or ZIP
Main Function: High-performance switching regulator for flyback power supplies
Key Features: Integrated soft-start, current limiting, thermal shutdown, and high efficiency (up to 95%) 🔌 Pinout Information
The standard 5-pin configuration for the STR-F series typically includes: Description 1 Drain MOSFET drain terminal 2 Source MOSFET source terminal / Current sense 3 GND Ground terminal 4 VCC Power supply for control circuit 5 FB/OLP Feedback input and Overload Protection
(Note: While some distributors list more pins for generic modules, the standard Sanken IC in this series uses a 5-pin layout.) 🛠️ Common Applications Sanken STR-F6267 is an integrated circuit (IC) designed
This IC is frequently used in power supplies for consumer electronics, including:
Sony CRT TVs: Often found in the power regulation stage of older Sony Trinitron models. AC-DC Adapters: Used for laptop and mobile device chargers.
LED Drivers: Provides stable power for LED lighting fixtures. 📥 Datasheet Access
You can find the full PDF documentation on major electronic component databases: Alldatasheet - STR-F6267 Datasheet Archive - STR F 6267 Search Utsource - Technical Specs
If you are looking for an equivalent or replacement, the STR-F6268 is often listed as a compatible higher-power variant within the same series. STRF6267 INTEGRATED CIRCUIT STR-F6267 F6267 - Nikkoe
1. Overview: What is the STR-F6267?
The STR-F6267 is a current-mode PWM (Pulse Width Modulation) controller with a built-in power MOSFET. It is part of Sanken’s STR-F6200 series, designed specifically for flyback converter topologies. The device significantly reduces external component count by integrating the oscillator, control logic, protection circuits, and a high-voltage MOSFET into a single 5-pin TO-220F (fully molded) package.
5. Internal Block Diagram – What the Datasheet Reveals
The STR F6267 datasheet PDF contains a detailed block diagram showing: DVD power supplies
- High-voltage startup circuit
- Pulse-by-pulse overcurrent comparator
- PWM comparator
- Oscillator (67 kHz)
- Soft-start circuit
- Overload/Overvoltage detection logic
- Driver for internal MOSFET
- Reference voltage generator
Understanding this block diagram helps troubleshoot feedback loops and protection triggers.
3. Absolute Maximum Ratings (From the Official STR F6267 Datasheet PDF)
Before designing a power supply, always verify the absolute maximum ratings. Exceeding these values can destroy the IC.
| Parameter | Symbol | Rating | Unit | |--------------------|-------------|--------------|-------| | Drain-to-Source Voltage | V_DSS | 650 | V | | Drain Current (pulsed) | I_DP | 16 | A | | VCC Voltage | V_CC | 35 (including ripple) | V | | FB/OLP input voltage | V_FB | -0.3 to 9 | V | | S/OCP input voltage | V_S_OCP | -0.3 to 9 | V | | Operating junction temp. | T_J | -20 to +125 | °C | | Storage temp. | T_STG | -40 to +125 | °C |
Where to Find the Official STR F6267 Datasheet PDF
Because search engines sometimes surface outdated or fake datasheets, always obtain the STR F6267 datasheet PDF from reliable sources:
- Sanken Electric Official Website – Product page under "Power ICs" > "STR-F6200 series". (Requires registration on some regional sites).
- Authorized Distributors:
- Mouser Electronics (product technical documents)
- Digi-Key (datasheet link under "Technical Resources")
- RS Components
- Aggregator Sites with Verified Curations:
- Alldatasheet.com (check for "Sanken" logo on first page)
- Datasheet4U.com
- DatasheetArchive.com
Warning: Avoid PDF hosting sites that require a CAPTCHA or ask for a credit card. The STR F6267 datasheet PDF is free for download from legitimate electronics component sites.
Conclusion
The STR F6267 datasheet PDF is more than just a pinout diagram—it is an engineering toolkit that includes all necessary specifications for designing robust, high-efficiency flyback power supplies. By understanding the absolute maximum ratings, protection features, and typical application circuit, you can confidently integrate this IC into your next AC-DC converter project.
Always download the latest revision of the datasheet from an authorized source, and cross-reference the date code to ensure you are not working with an obsolete or preliminary version. With the right design practices derived from the STR F6267 datasheet PDF, you can achieve cost-effective, reliable power conversion in the 60W–100W range.
Need to troubleshoot a specific circuit? The STR F6267 datasheet PDF includes detailed waveforms and design equations. Keep a copy saved locally for quick reference during PCB debugging.
11. Final Verdict
The STR-F6267 is a reliable, if older, power supply IC. It is ideal for repairing classic CRT TVs, DVD power supplies, and industrial flyback converters from the 2000s. For new designs, use a modern IC like the STR-A6000 series or TOP26x family (higher efficiency, lower standby power). If you are repairing equipment, check the VCC capacitor and snubber diode first – they cause 70% of failures.