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| Parameter | Condition | Min | Typ | Max | Unit | |-------------------------------|----------------------------|-----|-----|-----|------| | Startup current | VCC = Vth(start) – 0.5V | - | 10 | 20 | µA | | Operating current (normal) | FB open, VCC = 18V | - | 3.0 | 5.0 | mA | | Operating current (burst) | Light load | - | 0.9 | - | mA | | VCC startup threshold | VCC rising | 14.5| 16.0| 17.5| V | | VCC under‑voltage lockout | VCC falling | 8.0 | 9.0 | 10.5| V | | VCC overvoltage protection | VCC rising | 26 | 27.5| 29 | V | | Maximum duty cycle | - | 72 | 76 | 80 | % | | Oscillator frequency | - | 60 | 67 | 74 | kHz | | Sense voltage limit (OCP) | Pulse‑by‑pulse | 0.75| 0.80| 0.85| V | | FB terminal open voltage | - | - | 5.5 | - | V | | Thermal shutdown | Tjunction rising | - | 140 | - | °C |
Based on the new revision: If you are replacing an STR-F6267 and the power supply still ticks (start/stop/start/stop), check the Resistor on Pin 3. The new datasheet stresses that a tolerance of ±5% is required here. If you use a ±10% carbon resistor, the FB loop will misread the feedback current.
Have you run into a strange failure mode with the STR-F6267? Drop a comment below with your scope shots or voltage readings. The community troubleshooting thread is open.
Disclaimer: Always verify that the updated datasheet matches the revision number printed on your physical IC.
Go to product viewer dialog for this item. (also written as STRF6267) is a high-performance, off-line switching regulator IC manufactured by Sanken Electric
. It is primarily designed for use in flyback converters within power supply circuits for consumer electronics. Alltronic Computer Singapore Key Specifications & Features Package Type
: 5-pin overmolded SIP (Single In-line Package), often referred to as a TO-3P style for isolation and thermal performance. Integrated Components
: Combines a power MOSFET with a current-mode PWM controller and frequency jittering circuitry. Efficiency : Capable of reaching up to 95% efficiency. Control Method str f6267 datasheet pdf updated
: Features off-line quasi-resonant flyback switching for reduced electromagnetic interference (EMI). Protections
: Includes built-in soft start, current limiting, thermal shutdown, and overvoltage protection. Alltronic Computer Singapore Common Applications
The STR-F6267 is frequently found in the primary power stages of: Television and VCR power regulators (e.g., JVC models). AC-DC adapters for laptops and mobile devices. LED drivers and battery chargers. Industrial power supplies and standby power systems. Alltronic Computer Singapore Datasheet and Resource Links
You can find updated technical documentation and pinout details at the following specialized repositories: Alldatasheet
: Provides various versions of the PDF datasheet, including related series like the STR-F6600.
: Offers a detailed summary of product attributes, features, and common usage. Veswin Electronics
: A source for availability, pricing, and technical support for older or hard-to-find components. or finding a specific circuit diagram for this IC? STR-F6267 Datasheet, PDF - ALLDATASHEET.COM STR-F6267 Datasheet, PDF - Alldatasheet. ALLDATASHEET.COM | Parameter | Condition | Min | Typ
The Go to product viewer dialog for this item. is a high-performance off-line switching regulator IC manufactured by Sanken Electric. It is specifically designed for use in flyback-type SMPS (Switching Mode Power Supplies) and is housed in a 5-pin TO-3P or SIP package. Key Technical Specifications
integrates a power MOSFET and a controller into a single module, providing high efficiency and simplified circuit design. Manufacturer: Sanken Electric Package Type: 5-Pin SIP (or TO-3P)
Description: Integrated SMPS Primary IC containing a power MOSFET and PWM controller Efficiency: Capable of up to 95% efficiency Core Features: Frequency Jittering: Built-in circuit to reduce EMI noise.
Comprehensive Protection: Includes built-in soft start, current limit, and thermal shutdown circuits.
Low Cost: Designed for high efficiency at a lower system cost. Common Applications AC/DC adapters and battery chargers Switching power supplies for consumer electronics LED drivers and motor control circuits Datasheet Resources & Equivalents
You can find the most recent PDF documentation and technical details through various component distributors:
Technical Information & Pinouts: Detailed manufacturer information, pin voltages, and circuit diagrams are available at Veswin Electronics. Datasheet Downloads: Disclaimer: Always verify that the updated datasheet matches
Direct PDF access and version history can be found on AllDatasheet.
A searchable database of specifications is hosted at ecadata.de.
Potential Equivalents: The STR-F6267 is often associated with the STR-F6500 series (e.g., STR-F6502, STR-F6511) which share similar SMPS Primary IC descriptions. STR-F6267 Datasheet, PDF - ALLDATASHEET.COM
The STR-F6267 is a current‑mode PWM controller with an integrated high‑voltage MOSFET, designed for flyback converter topologies in low‑to‑medium power applications. It belongs to the STR‑F6200 series, typically used in AC‑DC adapters, standby power supplies, and auxiliary power for consumer electronics (TVs, monitors, white goods).
Key features (typical of the series):
The updated document clarifies which faults cause auto-restart vs latch-off. Overload (OLP) triggers auto-restart (1 second hiccup), while OVP on VCC triggers a full latch (requires AC power cycling).