TNY274GN

AC DC Converters, Offline Switchers Overview

The TNY274GN is an integrated offline switcher from the TinySwitch-III family, designed for high-efficiency AC/DC conversion. It operates with a wide input voltage range of 85 VAC to 265 VAC and delivers up to 11 W at 230 VAC or 8.5 W generally. The device features a fixed switching frequency of 132 kHz and a maximum duty cycle of 65%. Quiescent supply current is 275 uA. It utilizes an SMD-8 package and functions within a temperature range of -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700 V power MOSFET with high-voltage startup circuitry and proprietary control logic.
• Includes advanced protection mechanisms such as cycle-by-cycle current limiting, thermal shutdown, and open-loop detection.
• Utilizes EcoSmart technology to optimize efficiency across varying load conditions while minimizing standby power consumption.

AC DC Converters, Offline Switchers Applications

• Universal input adapters for portable audio players
• Chargers for mobile phones and handheld devices
• Low-power consumer appliance power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'GN' confirms the surface-mount SMD-8 package variant distinct from through-hole options. Confirm RoHS compliance status via the manufacturer's latest documentation. Ensure design-in compatibility with required isolation creepage distances for the target application environment.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring a compact solution with minimal external components. The fixed frequency operation simplifies EMI filter design compared to variable-frequency alternatives. Evaluate thermal performance requirements given the high junction temperature rating and integrated power switch capabilities.

AC DC Converters, Offline Switchers Part Context

This part belongs to the TinySwitch-III series, representing a generation of highly integrated offline converters. It succeeds earlier generations by offering improved efficiency and enhanced protection features within a small footprint, suitable for cost-sensitive applications demanding reliable performance.

AC DC Converters, Offline Switchers Replacement Considerations

The TNY274PN serves as a pin-compatible alternative utilizing a DIP-8 through-hole package. Verify that the change in mounting style aligns with the PCB layout and assembly process without altering electrical characteristics.

AC DC Converters, Offline Switchers FAQ

What is the breakdown voltage of the internal MOSFET?

The internal power MOSFET has a breakdown voltage of 700 V.

Does the device support constant current output?

Yes, the TNY274GN supports both constant voltage and constant current regulation modes.