A80604KESJSR

Overview

The A80604KESJSR is an LED lighting driver IC from Allegro MicroSystems, designed as a wide input voltage range boost/SEPIC controller with integrated LED drivers. It features four output channels capable of delivering up to 210 mA per channel. The device operates within a supply voltage range of 4.5 V to 40 V and supports switching frequencies from 260 kHz to 2.3 MHz. Output voltage regulation is maintained between 4.05 V and 4.45 V. Packaged in a 24-WFQFN (4x4) exposed pad, it is rated for operation from -40°C to +125°C and holds AEC-Q100 automotive qualification.

Feature Summary

• Integrates boost and SEPIC DC-DC controller topologies with four independent LED driver channels
• Supports both analog and PWM dimming methods for precise light control
• Features a wide input voltage operating range suitable for diverse power supply architectures
• Includes wettable flank package design to enhance solder joint visibility and reliability

Applications

• Automotive exterior lighting systems
• LED backlighting applications
• General LED illumination drivers
• High-power LED string driving

Procurement Notes

Verify the specific suffix 'SR' against the manufacturer's official datasheet to confirm reel packaging specifications and tape-and-reel dimensions. Ensure the ordered part matches the exact A80604KESJSR designation, as variations may exist regarding moisture sensitivity level handling or RoHS compliance status. Cross-reference the AEC-Q100 qualification grade if automotive application requirements are strict. Confirm that the 24-WFQFN package thermal pad connection aligns with the target PCB layout for adequate heat dissipation.

Selection Notes

Select this component when a four-channel solution is required for high-current LED strings up to 210 mA. The wide input voltage range allows compatibility with various vehicle or industrial bus voltages. Consider the integrated controller topology for simplified bill of materials compared to discrete solutions. Evaluate the thermal performance of the QFN package against the expected ambient temperature conditions, given the 125°C maximum rating. Compare against the A80602 or A80605 series if different channel counts or current limits better suit the specific load requirements.

Part Context

This part belongs to the A80604 family of LED drivers from Allegro MicroSystems, which are engineered for robust automotive and industrial lighting environments. The series emphasizes high efficiency and reliability through integrated power stages and advanced control algorithms. It complements other members like the A80602 and A80605, which offer different channel configurations while sharing similar architectural foundations and interface standards.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify direct pin-to-pin compatibility with any alternative before substitution.