UC2842N

Power Supply Controllers, Monitors Overview

The UC2842N is a current-mode PWM controller manufactured by Texas Instruments, designed for high-performance DC/DC converter applications. It supports Boost, Flyback, and Forward topologies with a maximum switching frequency of 500 kHz. The device features an 8-pin PDIP package and operates within a supply voltage range of 10 V to 30 V. It provides a peak output drive current of 1 A and supports up to 97% maximum duty cycle. The operational temperature range spans from -40 °C to +85 °C, ensuring reliability in industrial environments.

Power Supply Controllers, Monitors Feature Summary

• Implements current-mode control architecture for rapid transient response and inherent line feed-forward capability.
• Provides robust gate drive performance with a 1 A peak output current capacity for efficient power stage switching.
• Integrates precision oscillators and comparators to enable stable operation across wide input voltage ranges.

Power Supply Controllers, Monitors Applications

• Universal offline switchers
• Forward converters
• Flyback converters
• Boost converters

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'N' corresponds to the PDIP-8 through-hole package variant when sourcing. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the ordering part number matches the exact thermal and mechanical specifications required for the target PCB layout.

Power Supply Controllers, Monitors Selection Notes

Select this component for designs requiring through-hole mounting and standard industrial temperature ratings. It is suitable for applications where current-mode control offers advantages over voltage-mode schemes. Consider alternative packages like SOIC or variants with automotive qualification if surface-mount or extended temperature ranges are necessary.

Power Supply Controllers, Monitors Part Context

This part belongs to the UCx84x family of current-mode PWM controllers, widely used in power management integrated circuits. It shares functional similarities with other members of the series but differs in pinout configuration and specific electrical characteristics tailored for single-output switching applications.

Power Supply Controllers, Monitors Replacement Considerations

UC2842AN

Power Supply Controllers, Monitors FAQ

What is the maximum duty cycle supported by the UC2842N?

The device supports a maximum duty cycle of up to 97 percent.

Which switching topologies are compatible with this controller?

It is designed for use in Boost, Flyback, and Forward converter topologies.