TNY265PN

AC DC Converters, Offline Switchers Overview

The TNY265PN is a TinySwitch-II AC/DC converter IC from Power Integrations, designed for offline power supplies. It integrates a 700V power MOSFET, oscillator, high-voltage switched current source, and control logic into a single DIP-8 package. The device operates at a switching frequency of 132 kHz with a maximum duty cycle of 68%. It supports an input voltage range of 85 VAC to 265 VAC, delivering up to 7.5 W output power at 5.8 V and 295 mA. Quiescent supply current is 245 uA, and it functions within a temperature range of -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700V power MOSFET, oscillator, and control circuitry in a single DIP-8 package.
• Features automatic restart protection that safely limits output power during fault conditions such as short circuits or open loops.
• Includes programmable undervoltage line detection to prevent power supply on/off cycling.
• Utilizes frequency jittering to significantly reduce electromagnetic interference.

AC DC Converters, Offline Switchers Applications

• Offline flyback converters
• Universal input AC/DC adapters
• Battery chargers
• General-purpose isolated power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (PN) confirms the through-hole DIP-8 package configuration. Ensure the component matches the required 700V rating and 132 kHz switching frequency specifications. Confirm RoHS compliance status via the manufacturer's official documentation before integration.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring a minimal external component count and integrated protection features. It is suitable for applications needing universal AC input support and reliable thermal shutdown capabilities without complex feedback loops.

AC DC Converters, Offline Switchers Part Context

This part belongs to the TinySwitch-II family, which combines high-voltage MOSFETs with intelligent control circuitry. The series is known for simplifying offline power supply design by eliminating the need for bias windings and reducing overall system cost and size.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer's portfolio that offer similar power ratings and package types. Verify electrical parameter compatibility before substitution.

AC DC Converters, Offline Switchers FAQ

Does the TNY265PN require a bias winding?

No, the device is powered directly from the DRAIN pin, eliminating the need for a bias winding and associated circuitry.

What is the switching frequency of the TNY265PN?

The TNY265PN operates at a fixed switching frequency of 132 kHz.