Str F6267 Datasheet Pdf top ⭐

The STR-F6267 is a high-performance, off-line switching regulator IC developed by Sanken Electric. Designed specifically for Switched Mode Power Supplies (SMPS), it integrates a power MOSFET and a current-mode PWM controller into a single, compact 5-pin package. Key Technical Specifications

The STR-F6267 datasheet outlines several critical attributes that make it a robust choice for power conversion:

Integrated Power MOSFET: Combines the high-voltage switching transistor and control circuitry to reduce external component count.

High Efficiency: Capable of achieving efficiency levels up to 95%.

Operating Temperature: Reliable performance in high-heat environments up to

EMI Management: Features a built-in frequency jittering circuit to minimize electromagnetic interference.

Package Type: Available in a TO-3P (5-pin) or ZIP-5 package, designed for easy heat sink mounting. Comprehensive Protection Features

To ensure the longevity of both the IC and the connected electronics, the STR-F6267 includes several internal safety mechanisms:

Soft Start Circuit: Prevents high inrush current during startup.

Current Limit Circuit: Protects against overcurrent conditions.

Thermal Shutdown: Automatically powers down the device if internal temperatures exceed safe limits. Common Applications str f6267 datasheet pdf

Due to its efficient power regulation and compact design, this IC is widely used in various consumer and industrial products:

Televisions: Frequently found in the power supply stage of CRT and modern display units.

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

LED Drivers: Provides stable, regulated power for LED lamps and fixtures.

Home Appliances: Integrated into power modules for various household electronics. Pinout and Installation

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.

Synchronization/Soft Start: Controls the timing of the switching cycle. Replacement and Equivalents

If you are searching for an alternative to the STR-F6267, several similar parts from the Sanken STR-F series may be compatible depending on the voltage and current requirements of your circuit: STR-F6268 STR-F6264 STR-F6256 STR-F6238

For those performing repairs, distributors such as Utsource or Veswin Electronics typically provide the full PDF datasheet and current pricing for original Sanken modules.

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 Sanken Electric official website (product page for STR-F6200

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

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

9. Where to Download the Official STR F6267 Datasheet PDF

Because the keyword "STR F6267 datasheet PDF" is highly specific, ensure you source the document from legitimate manufacturers or distributors: VCC stuck &lt

Sanken Electric official website (product page for STR-F6200 series)
Mouser Electronics – Component page often includes a datasheet link.
Digi-Key – Similar to Mouser, with a direct PDF link.
Alldatasheet.com – Use with caution; verify revision date.
DatasheetArchive.com – Good for older components.

Note: Always check the revision number. The latest revision (as of 2025) is STR-F6267-DS-Rev.3.0. Earlier revisions may have different OLP timer settings.

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 |

Problem 3: Overheating

Verify RDS(on) from the datasheet (max 1.8Ω). If heatsinking is insufficient, refer to the "Thermal Impedance" section (RθJC).

5. Electrical Characteristics (Test Conditions: ( V_CC=18V ), ( T_a=25°C ))

| Parameter | Symbol | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | MOSFET Section | | | | | | | Drain-Source Breakdown | ( V_DSS ) | 800 | - | - | V | | Static Drain-Source On-Resistance | ( R_DS(on) ) | - | 1.8 | 2.5 | ( \Omega ) | | Control Section | | | | | | | Oscillator Frequency | ( f_OSC ) | 60 | 66 | 72 | kHz | | Start-up Voltage | ( V_CC(ON) ) | 15.0 | 16.0 | 17.0 | V | | Shutdown (Stop) Voltage | ( V_CC(OFF) ) | 9.0 | 10.0 | 11.0 | V | | Operating Current (after start) | ( I_CC ) | - | 3.5 | 5.5 | mA | | FB Pin Open Voltage | ( V_FB(open) ) | - | 5.7 | - | V | | Overcurrent Detection Threshold | ( V_S/OCP ) | 0.65 | 0.72 | 0.79 | V |

Electrical Characteristics (Typical Values)

These values are extracted from a typical STR F6267 datasheet PDF (VCC=18V, Ta=25°C unless specified).

7. Typical Faults & Diagnostic Guide (Practical from field experience)

Based on repair datasheets and real-world service manuals:

10. Common Issues & Troubleshooting Using the Datasheet

Engineers frequently report the following problems when using the STR-F6267:

| Symptom | Likely cause per datasheet | Solution | |------------------------------|-----------------------------------------------------|--------------------------------------------| | No startup, VCC oscillates | VCC startup capacitor too small or leakage | Increase to 47µF, check startup resistor | | Supply shuts down under load | Current sense resistor too large (false OCP) | Reduce resistor value (e.g., 0.33Ω→0.27Ω) | | Blown IC | Drain overvoltage spike exceeding 650V | Improve snubber, check transformer leakage | | Intermittent restart | Overload protection triggered by noise on FB pin | Add 100pF capacitor from FB to GND |