TOP223PN

AC DC Converters, Offline Switchers Overview

The TOP223PN is a monolithic high voltage switcher from the TOPSwitch-II family, integrating a power MOSFET and PWM controller in an 8-pin DIP package. It operates with a switching frequency of 100 kHz and supports a maximum duty cycle of 70%. The device accepts an input voltage range from 85 VAC to 265 VAC. It provides a fixed output voltage of 5.7 V and draws a working supply current of 1.2 mA. The component functions within a temperature range of -40°C to +150°C TJ.

AC DC Converters, Offline Switchers Feature Summary

• Integrates power MOSFET, PWM controller, and fault protection into a single three-terminal IC
• Utilizes internal lead frame for direct thermal transfer to the board without heat sinks
• Includes built-in line undervoltage detection and overtemperature shutdown protection

AC DC Converters, Offline Switchers Applications

• Universal input AC/DC converters
• Battery chargers
• Offline power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify that the specific part number suffix matches the required package type, as the TOP223 series includes TO-220 and SMD variants. Confirm RoHS compliance status through official manufacturer documentation prior to ordering. Ensure design specifications align with the isolated output requirements and thermal management capabilities defined in the datasheet.

AC DC Converters, Offline Switchers Selection Notes

Select this component for cost-sensitive applications requiring low external component counts. The DIP-8 package eliminates the need for heatsinks in lower power scenarios by transferring heat directly to the PCB. Consider the fixed 5.7V output constraint when designing secondary circuits.

AC DC Converters, Offline Switchers Part Context

This device belongs to the TOPSwitch-II family, offering enhancements over the first generation. It extends the power range for universal inputs compared to earlier models. The integration reduces sensitivity to board layout and line transients, simplifying the design process for offline converter systems.

AC DC Converters, Offline Switchers Replacement Considerations

TOP223YN serves as a pin-compatible alternative in a TO-220 package. Other members of the TOP223 family may offer different power ratings or package styles.