Str F6267 Datasheet Pdf May 2026

Q1: Is there a difference between STR-F6267 and STR-F6267S?
A: Yes, the “S” suffix may indicate improved ESD rating or different package material. Refer to the specific datasheet.

Q2: Can I use this IC in a 24V output supply?
A: Yes, by adjusting the feedback divider ratio (TL431 resistors) and the transformer turns ratio.

Q3: Does the datasheet include a formula for transformer design?
A: No. It provides electrical parameters, but you must refer to application notes AN-STR6200 or use standard flyback formulas.

Q4: How do I reset the latched OVP?
A: Remove input power and discharge the main bulk capacitor completely, then reapply power.

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 |

Many engineers mistake the STR F6267 for the STR F6263 or STR F6268. Always verify the current rating and RDS(on) in the datasheet. The F6267 is a mid-current variant (5.5A continuous, 650V).

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

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

Introduction

The STR-F6267 is a power management IC (PMIC) developed by Sanken Electric Co., Ltd. The datasheet PDF provides detailed information about the IC's features, specifications, and application notes. In this review, we'll take a closer look at the datasheet and provide an overview of the IC's capabilities. str f6267 datasheet pdf

Datasheet Overview

The STR-F6267 datasheet PDF is a comprehensive document that covers the IC's features, pin configuration, electrical characteristics, and application notes. The datasheet is well-organized, and the information is easy to find.

Key Features

The STR-F6267 is a highly integrated PMIC that features:

Specifications

The datasheet provides detailed specifications for the STR-F6267, including:

Application Notes

The datasheet includes several application notes that provide guidance on using the STR-F6267 in different applications. These notes cover topics such as:

Evaluation

Overall, the STR-F6267 datasheet PDF provides a comprehensive overview of the IC's features, specifications, and application notes. The document is well-organized, and the information is easy to find.

Pros

Cons

Conclusion

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.

Rating

Based on the review, I would give the STR-F6267 datasheet PDF a rating of 4.5 out of 5 stars.

Please let me know if you want me to make any changes or if you'd like a more detailed review.

Here is a sample of the Datasheet:

You can find the STR-F6267 datasheet PDF on various online platforms, including:

You can also search for the datasheet on other online platforms or contact the manufacturer directly to request a copy.

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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

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 Q1: Is there a difference between STR-F6267 and STR-F6267S

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).

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

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)

: 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

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

The STR F6267 datasheet PDF is an indispensable tool for anyone repairing or designing power supplies using this robust controller. By understanding its pin functions, protection features, and typical application circuit, you can build efficient, reliable flyback converters in the 40-100W range. Always download the latest version from an authorized distributor and respect the maximum ratings to avoid costly failures.

For further reading, pair the STR-F6267 datasheet with Sanken’s “STR-F6200 Series Design Guide” and a good flyback transformer design reference. The STR-F6267 is an off-line switching regulator IC

Looking for the official STR F6267 datasheet PDF? Visit Sanken’s semiconductor portal or Mouser’s technical resources to download a verified copy today.

| Parameter | Symbol | Min | Typ | Max | Unit | |-----------|--------|-----|-----|-----|------| | VCC Start-up Voltage | VCC(on) | 14.5 | 15.5 | 16.5 | V | | VCC Shutdown (Under-voltage lockout) | VCC(off) | 8.5 | 9.5 | 10.5 | V | | Operating Current (Normal) | ICC(ON) | - | 3.5 | 5.5 | mA | | Operating Current (Burst mode) | ICC(Burst) | - | 0.9 | - | mA | | Maximum Duty Cycle | Dmax | 70 | 75 | 80 | % | | Oscillation Frequency | fosc | 60 | 67 | 74 | kHz |