A6A259KA

Overview

The Allegro MicroSystems A6A259KA is a latch driver IC designed for power distribution and load driving applications. It features an N-channel output configuration with eight independent outputs, operating in a low-side arrangement. The device supports a maximum load voltage of 50V and functions within a supply voltage range of 4.5V to 5.5V. It delivers a maximum output current of 350mA per channel with a typical on-resistance of 1 ohm. The component utilizes serial and parallel interfaces for control and includes fixed current limiting fault protection. It is housed in a 20-DIP package and operates across a temperature range of -40°C to 125°C.

Feature Summary

• Integrates eight N-channel low-side outputs for versatile load driving capabilities
• Features fixed current limiting protection to safeguard against overcurrent conditions
• Supports both serial and parallel interface protocols for flexible system integration

Applications

• Automotive lighting systems requiring multiple low-side switches
• Industrial load distribution panels
• General-purpose power switching circuits

Procurement Notes

Verify the specific ordering suffix and package variant when sourcing this component, as availability may vary by manufacturer revision. Confirm that the 20-DIP through-hole package aligns with your PCB design requirements. Ensure compatibility with the required 4.5V to 5.5V logic supply levels. Check for any RoHS compliance status updates or environmental declarations relevant to your manufacturing standards before finalizing procurement decisions.

Selection Notes

Select the A6A259KA when designing systems requiring multiple isolated low-side switches controlled via standard digital interfaces. This part is suitable for applications needing fixed current limiting rather than adjustable regulation. Consider the thermal performance of the DIP package if high ambient temperatures are expected. Evaluate the 350mA per-channel limit against total system load requirements to ensure adequate headroom for all connected devices.

Part Context

This component belongs to Allegro MicroSystems' lineup of power management integrated circuits, specifically within the distribution switch and load driver category. It serves as a solution for managing multiple loads in automotive and industrial environments where reliable switching and basic protection are essential. The device complements other drivers in the series by offering a balance of channel count and interface flexibility.

Replacement Considerations

No direct public substitute part numbers are confirmed for this discontinued component.