TNY279PNAU

AC DC Converters, Offline Switchers Overview

The TNY279PNAU is an energy-efficient off-line switcher from the TinySwitch-III family, integrating a 700V power MOSFET and control circuitry in an 8-pin DIP package. It operates with a switching frequency of 132 kHz and supports input voltages from 85 VAC to 265 VAC. The device delivers up to 25 W output at universal input or 32 W at 230 VAC. Key electrical parameters include a maximum duty cycle of 65%, quiescent current of 510 uA, and an operating temperature range of -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates open-loop on/off control for simplified design without loop compensation
• Features user-selectable current limit via BP/M pin capacitor value
• Includes enhanced thermal shutdown with automatic recovery
• Utilizes frequency jittering to reduce EMI filtering requirements

AC DC Converters, Offline Switchers Applications

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

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'AU' against the manufacturer's official datasheet to confirm if it denotes a distinct marking, tape-and-reel packaging variant, or environmental compliance status compared to the standard 'PN' designation. Ensure the component matches the required DIP-8 through-hole form factor and that the integrated 700V MOSFET rating aligns with the target application's voltage stress.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high flexibility and extended power ranges within the TinySwitch-III series. The ability to adjust current limits allows optimization for either higher peak power or improved efficiency in closed enclosures. Its self-biasing capability eliminates the need for auxiliary windings, reducing system cost and complexity while maintaining robust performance across wide input voltage ranges.

AC DC Converters, Offline Switchers Part Context

The TNY279PNAU belongs to the TinySwitch-III product line by Power Integrations, designed as a monolithic off-line switcher. This series integrates the power MOSFET, oscillator, and protection circuits into a single package. The TNY279 specifically targets applications needing higher power density than previous generations while maintaining low standby power consumption and simplified design requirements.

AC DC Converters, Offline Switchers Replacement Considerations

The TNY279 series allows for direct replacement with adjacent TinySwitch-III products without circuit redesign, provided the current limit settings are adjusted accordingly. Verify that any substitute part maintains the same 700V breakdown voltage and DIP-8 package dimensions to ensure mechanical and electrical compatibility.