STR3A255D

AC DC Converters, Offline Switchers Overview

The STR3A255D is an AC/DC converter IC designed for offline flyback applications. It integrates a PWM controller with a power MOSFET rated at 650V breakdown voltage. The device operates at a switching frequency of 67kHz and supports a maximum duty cycle of 75%. It features comprehensive protection mechanisms including over-temperature (OTP), constant voltage (CV), under-voltage (UVP), over-voltage (OVP), and over-current (OCP) protection, along with soft-start functionality.

AC DC Converters, Offline Switchers Feature Summary

• Integrates PWM controller and high-voltage power MOSFET
• Includes thermal, voltage, and current protection circuits
• Supports flyback topology with soft-start capability

AC DC Converters, Offline Switchers Applications

• Offline AC/DC power supplies
• Flyback converter designs
• Consumer electronics power adapters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'D' against the manufacturer's official documentation to confirm pinout and package variations. Ensure compatibility with existing PCB footprints and thermal management requirements before procurement.

AC DC Converters, Offline Switchers Selection Notes

Select this component for cost-effective flyback designs requiring integrated protection. Verify input voltage ranges and load requirements match the 650V MOSFET rating. Consider thermal dissipation needs due to integrated power stage.

AC DC Converters, Offline Switchers Part Context

Part of Sanken's STR series of off-line PWM controllers with integrated power MOSFETs. Designed for high-reliability AC/DC conversion in compact form factors.

AC DC Converters, Offline Switchers Replacement Considerations

Consult official substitution lists for equivalent flyback controllers with integrated MOSFETs. Verify pin compatibility and electrical ratings before replacing.