TNY255GN

AC DC Converters, Offline Switchers Overview

The TNY255GN is an AC/DC switching converter from the TinySwitch family, designed for flyback topologies. It operates with a fixed switching frequency of 44 kHz and supports input voltages from 85 VAC to 265 VAC. The device delivers up to 6.5 W of output power at 5.8 V, with a maximum duty cycle of 67%. It features a low operating supply current of 215 uA and functions within a temperature range of -40°C to +150°C TJ. Packaged in an 8-pin SOP (SMD-8) format, it integrates high-voltage switching capabilities.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage power MOSFET with control circuitry for compact offline converter designs
• Includes proprietary frequency jittering to reduce electromagnetic interference peaks
• Provides comprehensive protection against over-current, over-temperature, and open-loop conditions

AC DC Converters, Offline Switchers Applications

• Adapters and chargers for portable electronic devices
• Low-power consumer appliance power supplies
• Standby power sources for general electronics

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'GN' confirms the surface-mount SOP-8 package variant. Confirm RoHS compliance status as some legacy listings may indicate different environmental standards. Check for moisture sensitivity level requirements during storage and handling. Ensure the source document explicitly lists this part number rather than a generic family member.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring isolated AC/DC conversion under 10W. The fixed 44 kHz frequency suits designs where transformer size and EMI filtering are balanced constraints. Verify that the thermal resistance of the SOP-8 package meets the junction temperature limits for the intended enclosure environment.

AC DC Converters, Offline Switchers Part Context

This part belongs to the TinySwitch series, which combines a power switch and controller into a single monolithic IC. The TNY255 variant specifically targets higher power outputs compared to lower-numbered siblings in the same series, utilizing silicon technology for robust operation in offline converter architectures.

AC DC Converters, Offline Switchers Replacement Considerations

Publicly confirmed substitutes include TNY254GN-TL and TNY255PN. Verify pinout compatibility and thermal performance when substituting between surface-mount and through-hole packages.