Str F6267 Datasheet Pdf Instant
The on Pins 2, 4, and 5 if the circuit is safe to probe.
A common pinout for the 5-pin package includes:
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| Specification | Detail | | :--- | :--- | | | Sanken Electric Co., Ltd. | | Part Number | STR-F6267, STRF6267 | | Function | Off-line Quasi-Resonant Flyback Switching Regulator | | Package | TO-3PF-5 (ZSIP-5, TO-220F) | | Power MOSFET Rating | High-voltage (e.g., 650V+), integrated | | Control Method | Current-Mode PWM | | Key Features | Quasi-Resonant, Soft-Start, Frequency Foldback | | Protections | OCP, OVP, Thermal Shutdown | | Typical Output Power | Up to 85W (in applications like TVs and monitors) | | RoHS Status | Lead-free / RoHS Compliant |
The STR-F6267 integrates a power MOSFET and a control IC into a single 5-pin package (TO-220F-5). This integration reduces external component count, simplifies PCB layout, and enhances reliability. Common applications include: The on Pins 2, 4, and 5 if the circuit is safe to probe
| Pin Number | Pin Name | Function Description | | :--------- | :------------- | :----------------------------------------------------------------------------------------------------------------------------------- | | 1 | | Ground Pin. The reference ground for the IC's control circuit. It must be connected to the primary-side ground in the PSU. | | 2 | Vcc | Power Supply Pin. Supplies the operating voltage to the internal controller (typically around 15-18V). This voltage is usually derived from an auxiliary winding on the transformer. | | 3 | FB | Feedback Pin. Receives the feedback signal from the secondary side (usually via an optocoupler) to regulate the output voltage. | | 4 | CS | Current Sense Pin. Monitors the primary current via an external sense resistor to detect overcurrent conditions and for cycle-by-cycle current limiting. | | 5 (or 8)* | DRAIN | Power Switching Pin. The drain terminal of the internal high-voltage power MOSFET. It is connected to the primary winding of the flyback transformer. | | 6 | SYNC | Synchronization Input Pin. Allows the switching frequency to be synchronized with an external clock for system-level timing coordination. May not be present on all variants (check datasheet). | | 7 | CT | Soft Start Time Setting Pin. An external capacitor connected to this pin sets the soft-start duration. | | 8 | DTC | Duty Taper Control Pin. Used to control the maximum duty cycle of the PWM output. |
: Forces the IC into a latched or restart shutdown state if the junction temperature exceeds safe operating thresholds due to inadequate heatsinking. Primary Applications It must be connected to the primary-side ground in the PSU
Operating the IC beyond its maximum ratings can cause permanent damage. The internal MOSFET is rated for high-stress environments commonly found in AC-DC conversion. 650 V (Minimum) Maximum Drain Current ( IDcap I sub cap D
: Modern high-frequency GaN or silicon controllers are a fraction of the size.