TNY253GN

AC DC Converters, Offline Switchers Overview

The TNY253GN is a TinySwitch-III integrated offline switcher designed for low-power AC/DC flyback converters. It combines a high-voltage power MOSFET with a current-mode controller in an 8-pin DIP or SMD package. The device operates from an 85 VAC to 265 VAC input range and delivers up to 2 W of output power. Key electrical parameters include a 700 V breakdown voltage, a fixed switching frequency of 44 kHz, and a maximum duty cycle of 68%. It features low standby supply current and supports operation over a temperature range of -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage power MOSFET and current-mode controller into a single compact package.
• Provides comprehensive protection against overload, short circuit, and over-temperature conditions.
• Enables cost-effective design through reduced component count and simplified transformer requirements.

AC DC Converters, Offline Switchers Applications

• Low-power AC/DC adapters
• Standby power supplies
• Battery chargers

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (e.g., GN for SOP-8) to ensure correct package type. Confirm RoHS compliance status as manufacturing processes may evolve. Check for Not Recommended for New Design (NRND) status which may impact long-term availability. Validate moisture sensitivity level requirements for surface-mount assembly processes.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring minimal external components and high reliability at low power levels. Consider the fixed 44 kHz frequency when designing magnetic components. Ensure the thermal management strategy accommodates the junction temperature limits specified in the datasheet for the chosen enclosure.

AC DC Converters, Offline Switchers Part Context

The TNY253GN belongs to the TinySwitch-III family, representing an evolution in integrated offline switcher technology. It offers improved performance over previous generations while maintaining compatibility with standard flyback topologies. This series is widely used in consumer electronics where space constraints and efficiency standards are critical.

AC DC Converters, Offline Switchers Replacement Considerations

TNY253GN-TL

AC DC Converters, Offline Switchers FAQ

What is the default switching frequency?

The TNY253GN operates at a fixed switching frequency of 44 kHz.

Does it support remote shutdown?

Yes, the device includes a control pin that can be used for remote on/off functionality.