A80603KESJSR

Overview

The A80603KESJSR is an automotive-grade LED lighting driver IC from Allegro MicroSystems, designed for high-reliability applications. It features a wide input voltage range of 4.5 V to 40 V and supports Boost and SEPIC topologies. The device integrates four independent output channels with a maximum output current of 120 mA per channel. Operating frequencies are adjustable between 260 kHz and 2.3 MHz. It functions within a temperature range of -40°C to +125°C and is housed in a 24-pin QFN package.

Feature Summary

• Supports Boost and SEPIC converter topologies for flexible LED string configurations
• Integrates four independent constant-current output channels
• Enables analog and PWM dimming control for precise brightness management
• Automotive qualification ensures reliability under harsh environmental conditions

Applications

• Automotive exterior lighting systems
• LED headlamp modules
• Daytime running light circuits
• Fog lamp drivers

Procurement Notes

Verify the specific suffix 'JSR' against the manufacturer's official datasheet to confirm pinout, thermal pad configuration, and moisture sensitivity level. Ensure the ordering quantity aligns with the manufacturer's reel packaging requirements. Confirm that the application environment stays within the specified -40°C to +125°C operating temperature range for valid performance guarantees.

Selection Notes

Select this component when designing automotive LED systems requiring four independent channels with a wide input voltage tolerance up to 40 V. It is suitable for designs utilizing Boost or SEPIC architectures where space efficiency is critical due to the compact QFN-24 package. Consider the 120 mA output capability per channel to determine if it meets the specific luminous flux requirements of the target LED strings without external amplification.

Part Context

This part belongs to the A80603 series of integrated LED drivers from Allegro MicroSystems. These devices are engineered specifically for automotive environments, offering robust protection features and high efficiency. The series provides scalable solutions for various lighting applications, balancing performance with thermal management capabilities in a small form factor.

Replacement Considerations

Consult the official Allegro MicroSystems cross-reference guide for verified substitutes. Direct replacements must maintain the 4-channel architecture, QFN-24 package, and automotive grade specifications. Generic equivalents may lack the required functional compatibility or reliability standards.