TOP261EN

AC DC Converters, Offline Switchers Overview

The TOP261EN is an AC-DC converter from the TOPSwitch-GX family, integrating a high-voltage power MOSFET and control circuitry. It operates in a SIP-7 package with through-hole mounting. Key electrical parameters include a switching frequency of 66 kHz or 132 kHz, a maximum duty cycle of 78%, and an input voltage range of 85 VAC to 265 VAC. The device supports a breakdown voltage of 700 V and has a dissipation power rating of 118 W. It functions within a temperature range of -40 °C to 150 °C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates high-voltage power MOSFET and PWM controller on a single CMOS chip
• Features externally programmable accurate current limit for design flexibility
• Includes line undervoltage detection and overvoltage shutdown protection
• Provides hysteretic thermal shutdown for automatic fault recovery

AC DC Converters, Offline Switchers Applications

• High-power offline switcher applications
• Industrial power supplies
• Consumer electronics requiring extended power range
• Equipment needing high surge withstand capability

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'EN' against the manufacturer's official datasheet to confirm pinout configuration and environmental compliance status. Ensure the ordering part number matches the required switching frequency option (66 kHz or 132 kHz) as defined in the product selection guide. Confirm package type compatibility with the target PCB footprint prior to procurement.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring higher power output capabilities compared to standard TOPSwitch families. The integrated features reduce external component count and system cost. Consider the thermal performance requirements given the 118 W dissipation rating. Evaluate the need for separate line sense and current limit pins available in specific package variants.

AC DC Converters, Offline Switchers Part Context

The TOP261EN belongs to the TOPSwitch-GX family, which offers extended power ranges and enhanced design flexibility. This series integrates soft-start, frequency reduction for efficiency, and robust protection mechanisms. It is designed to replace older generations while providing improved energy efficiency and reduced standby power consumption in various AC-DC conversion scenarios.

AC DC Converters, Offline Switchers Replacement Considerations

Consult official substitution lists for direct replacements. Verify pin-to-pin compatibility and electrical parameter equivalence before swapping.