TNY255P

AC DC Converters, Offline Switchers Overview

The TNY255PN is an AC/DC converter from the TinySwitch family, designed for off-line flyback applications. It operates within a wide input voltage range of 85 VAC to 265 VAC and delivers up to 6.5 W output power at 5.8 V. The device features a switching frequency of 44 kHz with a maximum duty cycle of 67%. It draws a working supply current of 215 uA and supports an output current of 310 mA. The component functions reliably across a temperature range of -40°C to +150°C TJ.

AC DC Converters, Offline Switchers Feature Summary

• Integrates high-voltage switched-current source and power MOSFET in a single monolithic package
• Includes proprietary Cycle-by-Cycle current limiting and thermal shutdown protection
• Supports universal AC input ranges without external auxiliary winding requirements

AC DC Converters, Offline Switchers Applications

• Universal AC adapter designs
• Battery chargers for portable devices
• Standby power supplies for consumer electronics

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'PN' corresponds to the DIP-8 through-hole package configuration. Confirm RoHS compliance status and check for any recent Product Change Notifications regarding leadframe or assembly sources. Ensure the ordering part number matches the required pinout and thermal specifications for the target PCB layout.

AC DC Converters, Offline Switchers Selection Notes

Select this component for low-power offline applications requiring minimal external components. The integrated high-voltage startup circuit simplifies design by eliminating the need for bias windings. Consider the thermal performance limits when designing for maximum load conditions within the specified junction temperature range.

AC DC Converters, Offline Switchers Part Context

This part belongs to the TinySwitch series, which consolidates control logic, oscillator, and power MOSFET into one IC. The TNY255 variant specifically targets higher power outputs compared to lower-numbered siblings like the TNY253, offering increased current capability while maintaining the same compact footprint and simple control architecture.

AC DC Converters, Offline Switchers Replacement Considerations

Public confirmed substitute: VIPER22ADIP-E.