UC3842D8TR

Power Supply Controllers, Monitors Overview

The UC3842D8TR is a current-mode PWM controller manufactured by Texas Instruments, designed for high-performance power supply applications. It operates within a supply voltage range of 12 V to 28 V and features a switching frequency capability up to 500 kHz. The device supports multiple topologies including Boost, Buck, Flyback, and Forward configurations. It provides a single output with a maximum duty cycle of 100% and an output current capacity of 200 mA. The component functions reliably across an operating temperature range from 0°C to +70°C and utilizes an SOIC-8 surface-mount package.

Power Supply Controllers, Monitors Feature Summary

• Implements current-mode pulse width modulation control architecture
• Supports versatile converter topologies such as boost, buck, flyback, and forward
• Features integrated oscillator with programmable frequency up to 500 kHz
• Provides high peak output drive current capability

Power Supply Controllers, Monitors Applications

• High-density DC/DC converters
• Uninterruptible power supplies (UPS)
• Power factor correction circuits
• Battery chargers

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'D8TR' against the manufacturer's official documentation to confirm the tape and reel packaging configuration and lead-free status. Ensure that the ordering part number matches the exact electrical specifications and thermal characteristics required for the target application design.

Power Supply Controllers, Monitors Selection Notes

Select this component when a current-mode control strategy is required for efficient power conversion. Consider the SOIC-8 package constraints and the specified operating temperature range. Evaluate compatibility with the intended transformer or inductor designs for the chosen topology before finalizing the selection.

Power Supply Controllers, Monitors Part Context

This component belongs to the UC3842 series of current-mode PWM controllers produced by Texas Instruments. It is part of a family of power management integrated circuits widely used in industrial and consumer electronics for regulating power delivery efficiently.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers include UC3842AD8TRG4.