UC3842D8

Power Supply Controllers, Monitors Overview

The UC3842D8 is a current-mode PWM controller manufactured by Texas Instruments, designed for single-output DC-DC converter applications. It supports Boost, Buck, Flyback, and Forward topologies with a switching frequency of 500 kHz. The device features a maximum duty cycle of 100% and provides an output voltage of 5 V at 200 mA. Operating within a supply voltage range of 12 V to 28 V, it draws a working supply current of 25 mA. The component operates between 0°C and +70°C, housed in an SOIC-8 surface-mount package.

Power Supply Controllers, Monitors Feature Summary

• Implements current-mode pulse width modulation control architecture
• Supports versatile power conversion topologies including flyback and forward configurations
• Enables full load regulation through 100 percent maximum duty cycle capability

Power Supply Controllers, Monitors Applications

• Flyback power supply designs
• Forward converter implementations
• Buck step-down regulator circuits
• Boost step-up regulator architectures

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix D8 confirms the SOIC-8 surface mount package variant distinct from other packaging options. Confirm RoHS compliance status as indicated in official documentation. Ensure the ordering part number matches the exact manufacturer designation to avoid substitution errors during procurement processes.

Power Supply Controllers, Monitors Selection Notes

Select this component for designs requiring a 500 kHz switching frequency and single-channel current-mode control. The SOIC-8 package suits space-constrained surface mount layouts. Verify that the input voltage range of 12 V to 28 V aligns with the system power rail requirements before integration into the final circuit design.

Power Supply Controllers, Monitors Part Context

This part belongs to the UC3842 series of current-mode PWM controllers produced by Texas Instruments. It serves as a core control element in various switched-mode power supply architectures. The device integrates essential protection features and timing controls required for stable operation in industrial and commercial power conversion systems.

Power Supply Controllers, Monitors Replacement Considerations

UC3842AD8TRG4

Power Supply Controllers, Monitors FAQ

What is the maximum operating temperature for the UC3842D8?

The maximum operating temperature is +70°C.

Which package type does the UC3842D8 utilize?

It utilizes an SOIC-8 surface-mount package.