UC3843AD8

Power Supply Controllers, Monitors Overview

The UC3843AD8 is a current-mode PWM controller manufactured by Texas Instruments, designed for single-output switching power supply applications. It operates within a supply voltage range of 12 V to 28 V and supports a maximum switching frequency of 500 kHz. The device features a maximum duty cycle of 100% and provides an output drive current of 200 mA. It is housed in an SOIC-8 surface-mount package and functions reliably across an operating temperature range from 0°C to +70°C.

Power Supply Controllers, Monitors Feature Summary

• Implements current-mode control architecture for precise regulation
• Supports multiple converter topologies including Buck, Boost, Flyback, and Forward
• Provides high-side gate drive capability with up to 100% maximum duty cycle

Power Supply Controllers, Monitors Applications

• DC-DC converter designs utilizing flyback topology
• Forward converter implementations
• Boost and buck step-up/step-down power stages
• General-purpose switched-mode power supplies

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'AD8' corresponds to the commercial grade temperature range and SOIC-8 package variant. Confirm RoHS compliance status through official documentation. Ensure the source is an authorized distributor or manufacturer channel to guarantee component authenticity and traceability.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring a single output with current-mode control. It is suitable for designs needing up to 500 kHz operation and 200 mA peak drive current. Consider the SOIC-8 footprint for surface-mount assembly requirements within the specified commercial temperature limits.

Power Supply Controllers, Monitors Part Context

This part belongs to the UC3843 series of current-mode PWM controllers. It shares functional similarities with other members like the UC3843N and UC3843D8 but differs in package type and temperature rating. The series is widely used in general-purpose power management solutions.

Power Supply Controllers, Monitors Replacement Considerations

Direct substitutes include UC3843D8 and UC3843DRG4. Verify pinout compatibility and electrical specifications before substitution.