A4401KLTR-T

Overview

The A4401KLTR-T is a vacuum fluorescent display driver integrated circuit manufactured by Allegro MicroSystems. It operates within a supply voltage range of 7V to 40V and draws a supply current of 2.3 mA. The device is housed in an 8-SOIC package with dimensions of 0.154 inches (3.90mm) width. It supports an operating temperature range from -40°C to +125°C. This component is specifically designed for driving vacuum fluorescent displays using a flyback converter topology.

Feature Summary

• Integrated flyback converter driver optimized for vacuum fluorescent displays
• Wide input voltage capability supporting 7V to 40V operation
• Extended industrial temperature rating up to +125°C

Applications

• Vacuum fluorescent display systems
• Industrial control panels requiring high-contrast displays
• Automotive instrument clusters

Procurement Notes

Verify the obsolete status of this part number before initiating any procurement activities, as official documentation indicates it is no longer recommended for new designs. Confirm availability through authorized distributors or surplus channels if immediate sourcing is required. Ensure that the 8-SOIC package footprint matches your PCB layout constraints. Cross-reference the specific suffix 'T' to confirm tape-and-reel packaging specifications.

Selection Notes

Select this component only for applications specifically requiring vacuum fluorescent display drivers. Consider the wide input voltage range suitable for automotive or industrial environments. Evaluate the thermal performance given the extended temperature range. Note that alternative solutions may be necessary due to the discontinued status of this specific part number.

Part Context

The A4401 belongs to Allegro MicroSystems' portfolio of power management ICs focused on display driving applications. It utilizes a flyback converter architecture to efficiently drive vacuum fluorescent displays. The 8-SOIC package provides a compact solution for space-constrained designs. This series was designed to meet the demands of robust industrial and automotive display interfaces.

Replacement Considerations

Official documentation lists the A4401KLTR-T as obsolete. No direct public substitute part numbers are confirmed in the provided source material. Engineers should consult Allegro MicroSystems for current replacement recommendations or evaluate third-party compatible drivers for vacuum fluorescent displays.