TNY289KG

AC DC Converters, Offline Switchers Overview

The TNY289KG is a TinySwitch-4 AC/DC converter IC from Power Integrations, designed for high-voltage offline applications. It delivers up to 25 W at 85–265 VAC and 32 W at 230 VAC input. The device features an integrated 725 V power switch and operates within a temperature range of -40 °C to 150 °C. Key electrical parameters include a maximum output current of 2.25 A, a minimum output voltage of 50 VDC, and a switching frequency between 124 kHz and 140 kHz. The package is DIP-8 with seven pins.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage 725 V power switch for compact design
• Includes proprietary Cycle-by-Cycle Peak Current Control
• Features internal soft-start and thermal shutdown protection

AC DC Converters, Offline Switchers Applications

• Offline AC/DC power supplies
• Universal input adapter designs
• Battery chargers

AC DC Converters, Offline Switchers Procurement Notes

Verify the suffix 'KG' corresponds to the specific tape-and-reel or cut-tape packaging variant required for your assembly line. Confirm RoHS compliance status through official datasheets. Ensure moisture sensitivity handling protocols are followed during storage and reflow soldering processes.

AC DC Converters, Offline Switchers Selection Notes

Select this component for isolated flyback converters requiring universal input ranges. It suits applications needing moderate power levels up to 32 W. Consider the DIP-8 package for through-hole mounting requirements. Evaluate thermal performance against the 150 °C junction limit.

AC DC Converters, Offline Switchers Part Context

This part belongs to the TinySwitch-4 family, which integrates control logic, high-voltage MOSFET, and protection circuits into a single package. It replaces earlier generations like TinySwitch-II and III, offering improved efficiency and higher power density capabilities for cost-sensitive designs.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct pin-compatible substitutes within the same manufacturer's portfolio. Verify that alternative parts support the required 725 V breakdown voltage and similar switching frequencies.