TOP244PN

AC DC Converters, Offline Switchers Overview

The TOP244PN is an AC-DC converter from the TOPSwitch family, integrating a high-voltage MOSFET and PWM controller in a DIP-8 package. It operates at a switching frequency of 132 kHz with a maximum duty cycle of 83%. The device supports an input voltage range of 85 to 265 VAC and delivers up to 20 W output power under universal input conditions. Key electrical parameters include a breakdown voltage of 700 V, a supply current of 1.6 mA, and an operating temperature range from -40 °C to +150 °C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates high-voltage MOSFET, PWM controller, and fault protection on a single CMOS chip
• Features fully integrated soft-start circuitry to reduce device stress and output voltage overshoot
• Includes externally programmable accurate current limit for precise system design
• Provides line undervoltage detection to prevent turn-off glitches during line surges

AC DC Converters, Offline Switchers Applications

• Universal input adapters
• Open-frame power supplies
• Battery chargers
• General-purpose offline power conversion

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix PN indicates the DIP-8 through-hole package configuration. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the ordering part number matches the required pinout and thermal characteristics for your PCB layout. Cross-reference the datasheet revision date to confirm parameter accuracy.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring a cost-effective, highly integrated solution for low-to-medium power applications. The wide operating temperature range and robust protection features make it suitable for industrial and consumer environments. Consider the DIP-8 package constraints regarding thermal dissipation and board space requirements.

AC DC Converters, Offline Switchers Part Context

This device belongs to the TOPSwitch family, which combines power switching and control logic into a single monolithic IC. The TOP244 variant specifically offers extended power capabilities compared to earlier generations, utilizing a 132 kHz switching frequency to minimize transformer size while maintaining high efficiency across various load conditions.

AC DC Converters, Offline Switchers Replacement Considerations

TOP244PG (Surface Mount)

AC DC Converters, Offline Switchers FAQ

Does the TOP244PN support external synchronization?

Yes, depending on the package type, additional pins allow for synchronization with an external lower frequency signal.

What is the purpose of the line sensing feature?

Line sensing provides overvoltage and undervoltage detection, enabling voltage feedforward and reducing DCMAX requirements.