TNY285KG

AC DC Converters, Offline Switchers Overview

The TNY285KG is an AC/DC converter from the TinySwitch-4 family, rated for 11.5 W at 85-265 VAC and 15 W at 230 VAC. It integrates a 725 V rated MOSFET and operates within a switching frequency range of 124 kHz to 140 kHz. The device supports a maximum output current of 1.05 A and withstands input voltages from 85 VAC to 265 VAC. It functions reliably across a temperature range of -40 °C to +150 °C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates line compensated overload power protection to limit maximum output power during fault conditions without additional components.
• Features a self-biased architecture that eliminates the need for bias windings or external bias components.
• Includes ON-time extension capability to increase low-line regulation range and hold-up time, reducing input bulk capacitance requirements.

AC DC Converters, Offline Switchers Applications

• PC standby power supplies
• Constant voltage adapters
• Chargers

AC DC Converters, Offline Switchers Procurement Notes

Verify the package type matches design requirements, as the TNY285KG series includes variants like DG (SOIC-8) and KG (eSOP-12B). Confirm RoHS compliance status through official datasheets. Ensure ordering suffixes align with specific packaging needs such as cut tape or reel quantities defined by the manufacturer.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high efficiency and reduced system cost in offline switcher applications. The integrated 725 V MOSFET allows for higher reflection voltages and bus voltage designs. Consider the selectable current limit via the BP/M capacitor value to optimize peak power or continuous power based on thermal constraints.

AC DC Converters, Offline Switchers Part Context

This part belongs to the TinySwitch-4 family of energy-efficient off-line switchers. The family emphasizes lowest system cost through enhanced flexibility and tight I2f parameter tolerance. These devices maximize MOSFET and magnetics utilization while simplifying heat sinking due to electrically quiet SOURCE pins.

AC DC Converters, Offline Switchers Replacement Considerations

TNY285DG serves as a pin-compatible alternative in SOIC-8 packaging. Verify electrical parameters and thermal performance match application needs when substituting between package types within the same power rating family.