Str F6267 Datasheet Pdf =link= May 2026

The STR-F6267 is a high-performance, off-line switching regulator integrated circuit (IC) manufactured by Sanken Electric Co., Ltd.. Primarily designed for use in Switch-Mode Power Supplies (SMPS), this 5-pin device integrates a power MOSFET and a controller IC into a single package, typically the TO-3P or ZIP-5 form factor. Key Technical Specifications

According to technical data from Utsource and Xecor, the STR-F6267 is engineered for efficiency and reliability in power conversion.

Integrated Components: Includes a power MOSFET, a current-mode PWM controller, and a frequency jittering circuit to minimize EMI.

Operating Modes: Specifically optimized for off-line quasi-resonant flyback switching.

Efficiency: Capable of achieving high efficiency, with some benchmarks reaching up to 95%.

Temperature Rating: Certain models are rated to operate reliably at temperatures up to 105°C. Pin Configuration and Functions

The 5-pin configuration simplifies PCB layout compared to discrete designs.

Pin 1 (D/ST): Drain/Startup terminal for the MOSFET and startup signal input. Pin 2 (S/OCP): Source/Overcurrent Protection terminal. Pin 3 (GND): Ground terminal. Pin 4 (VCC): Power supply terminal for the control circuit.

Pin 5 (FB): Feedback terminal for constant voltage control signals. Core Features and Protections str f6267 datasheet pdf

The STR-F6267 incorporates several built-in protection mechanisms to safeguard electronic systems:

Over-Voltage Protection (OVP): Monitors input voltage to prevent component failure.

Over-Current Protection (OCP): Limits output current to safe levels.

Thermal Shutdown (OTP): Automatically shuts down the IC if it exceeds safe operating temperatures.

Soft Start: Gradually increases output voltage during startup to reduce component stress.

Frequency Jittering: Reduces electromagnetic interference (EMI) noise, aiding in regulatory compliance. Common Applications

Due to its robust power regulation, the STR-F6267 is widely used across consumer and industrial electronics:

Consumer Electronics: Historically prevalent in TV and VCR power regulator circuits (e.g., JVC units). AC input → Bridge rectifier → Bulk capacitor

Power Adapters: AC/DC adapters and battery chargers for various peripherals.

Lighting: Utilized as a stable power source for LED drivers.

Industrial Equipment: Applied in motor drivers and general-purpose power supply units. STRF6267 Sk | | Xecor

The STR-F6267 is a high-performance, off-line switching regulator IC manufactured by Sanken Electric. It is specifically designed for use in Switch-Mode Power Supplies (SMPS) to provide efficient and reliable power regulation for various electronic applications. General Specifications Manufacturer: Sanken Electric

Package Type: Available in 5-pin SIP (Single In-line Package) or ZIP packages, often identified in TO-3P style moldings.

Primary Function: SMPS Primary IC / Off-line switching regulator.

Integrated Components: Combines a power MOSFET and a current-mode PWM controller within a single package. Key Features High Efficiency: Capable of achieving efficiency up to 95%.

Low Noise: Features built-in frequency jittering to reduce EMI (Electromagnetic Interference). The STR-F6267 is a high-performance

Comprehensive Protection: Includes internal circuits for thermal shutdown, current limiting, and general protection to enhance reliability.

Startup Control: Equipped with a soft-start circuit to minimize component stress during initial power-up. Typical Applications The STR-F6267 is commonly found in: AC/DC adapters and battery chargers. LED and motor drivers.

Standard switching power supply circuits for consumer electronics. Technical Documentation & Resources

For detailed pinout voltages, schematic diagrams, and cross-references, you can access technical support and PDF downloads through distributors like Veswin Electronics or Jotrin Electronics. STR-F6267 Datasheet, PDF - ALLDATASHEET.COM

(Note: If "str f6267" refers to a specific legacy audio component or a less common variant, the pinout may differ, but the STF6267 is the primary active component matching this part number).

6. Application Circuit Analysis (Typical from datasheet)

A standard flyback converter using STR-F6267 includes:

Troubleshooting Common Issues Using the Datasheet

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 |