ALT80800KLPATR

Overview

The ALT80800KLPATR is an automotive-grade synchronous buck LED driver IC from Allegro MicroSystems. It operates with a supply voltage range of 4.5 V to 55 V and delivers up to 2 A output current. The device features a fixed switching frequency of 500 kHz and supports an output voltage up to 50 V. It is housed in a 16-pin eTSSOP package with exposed pad, rated for junction temperatures between -40°C and +125°C. Certified under AEC-Q100 standards, it integrates analog and PWM dimming capabilities for precise LED control.

Feature Summary

• Integrated synchronous buck topology for high-efficiency power conversion
• Supports both analog and pulse-width modulation dimming methods
• Automotive qualification compliant with AEC-Q100 reliability standards

Applications

• Automotive exterior lighting systems
• LED headlamp modules
• Adaptive driving beam applications

Procurement Notes

Verify the specific suffix KLPATR against official Allegro MicroSystems documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with your PCB footprint for the 16-eTSSOP-EP form factor. Cross-reference the datasheet for thermal dissipation requirements given the exposed pad design. Confirm that the selected component meets the required AEC-Q100 grade for your specific automotive application environment.

Selection Notes

Select this component when designing automotive lighting circuits requiring a synchronous buck architecture with integrated switches. It is suitable for applications needing wide input voltage tolerance up to 55 V. Consider the 500 kHz fixed frequency for balancing efficiency and external component size. Ensure the thermal management solution accommodates the 16-pin eTSSOP package constraints for reliable operation at elevated junction temperatures.

Part Context

This part belongs to the ALT80800 series of LED drivers designed specifically for automotive environments. It complements other variants like the ALT80802 by offering a dedicated synchronous buck solution rather than a buck-boost topology. The series focuses on providing robust, high-current drive capabilities for demanding automotive lighting applications while maintaining strict automotive quality standards.

Replacement Considerations

Direct substitutes within the same family include parts with different topologies or packages, such as the ALT80802KEJJTR. Verify pinout compatibility and electrical parameters before substitution. No identical functional replacements are confirmed in public data; engineering changes may be required for alternative components.