UDN2982LW

Power Distribution Switches, Load Drivers Overview

The UDN2982LW is an obsolete 8-channel source driver manufactured by Allegro MicroSystems, designed for interfacing low-level logic with high-current loads. It features a bipolar output configuration capable of delivering up to 500mA per channel. The device supports load voltages ranging from 5V to 50V and operates within a temperature range of -20°C to 85°C. Packaged in a 20-SOIC surface-mount format, it includes fixed current limiting fault protection and utilizes a non-inverting open/switch interface.

Power Distribution Switches, Load Drivers Feature Summary

• Provides eight independent high-side source channels for driving inductive and resistive loads
• Integrates fixed current limiting circuitry to protect against output short circuits and overloads
• Features a simple non-inverting digital interface for direct connection to standard logic families

Power Distribution Switches, Load Drivers Applications

• Driving electromagnetic relays and solenoids
• Controlling incandescent lamps and indicator lights
• Actuating small motors and valves in industrial control systems

Power Distribution Switches, Load Drivers Procurement Notes

This component is officially discontinued by the manufacturer. Verify availability through authorized distributors or third-party suppliers carefully checking part authenticity and storage conditions. Ensure replacement strategies account for the end-of-life status and potential supply chain constraints associated with obsolete power management ICs.

Power Distribution Switches, Load Drivers Selection Notes

Select this part only if legacy compatibility is required, as it is no longer recommended for new designs. Consider modern alternatives with improved thermal performance and RoHS compliance. Verify that the 500mA per channel rating and 50V maximum load voltage meet specific application requirements before finalizing the design.

Power Distribution Switches, Load Drivers Part Context

The UDN2982LW belongs to the UDN298x family of 8-channel source drivers. It shares functional similarities with other parts in the series but differs in package type and specific electrical characteristics. This variant uses a 20-SOIC package, distinguishing it from DIP or TSSOP versions available in the broader product line.

Power Distribution Switches, Load Drivers Replacement Considerations

Official substitutes include the UDN2982LW-T (tape and reel) and the UDN2987LWTR-6-T. These alternatives offer similar functionality but may differ in packaging or specific current ratings. Always consult the latest datasheets to confirm pinout compatibility and electrical specifications when transitioning to a replacement part.