ALT80600KESJSR

Overview

The ALT80600KESJSR is a four-channel LED driver IC from Allegro MicroSystems, designed for automotive backlighting and general lighting applications. It operates as a boost DC-DC converter with an input voltage range of 4.5 V to 40 V and supports output voltages up to 40 V. The device delivers 120 mA per channel and features adjustable switching frequencies between 200 kHz and 2.35 MHz. It includes integrated analog and PWM dimming capabilities and is housed in a 24-QFN package.

Feature Summary

• Supports boost topology for driving high-voltage LED strings from low-voltage sources
• Provides independent regulation for four separate LED channels
• Enables precise brightness control through combined analog and PWM dimming interfaces

Applications

• Automotive interior and exterior LED backlighting systems
• General solid-state lighting fixtures requiring multi-channel regulation
• High-brightness LED arrays in industrial or commercial environments

Procurement Notes

Verify the specific suffix KESJSR against the manufacturer's current datasheet to confirm pinout compatibility and thermal pad specifications. Ensure the design accounts for the 24-WFQFN package requirements, including exposed pad soldering practices. Confirm that the selected frequency setting aligns with external inductor and capacitor ratings for stable operation within the specified temperature range.

Selection Notes

Select this component when a four-channel boost configuration is required for automotive-grade LED applications. It is suitable for designs needing wide input voltage tolerance and flexible dimming options. Consider alternative models if higher output current per channel or different topologies such as buck or SEPIC are necessary for the specific power stage architecture.

Part Context

This part belongs to the ALT806 series of LED drivers from Allegro MicroSystems. The series focuses on providing regulated current solutions for automotive lighting standards. The AEC-Q100 qualification ensures reliability under harsh automotive operating conditions, distinguishing it from non-automotive grade counterparts in the broader portfolio.

Replacement Considerations

Direct substitutes include other members of the ALT806 family with matching channel counts and electrical characteristics. Verify pin-to-pin compatibility and thermal performance before swapping with similar Allegro parts or competitors offering equivalent boost driver architectures.

FAQ

What dimming methods does the ALT80600KESJSR support?

The device supports both analog and PWM dimming methods for precise control of LED brightness levels.

Is the ALT80600KESJSR qualified for automotive use?

Yes, the component is AEC-Q100 qualified, making it suitable for automotive backlighting and lighting applications.