APM80950KNBATR

Overview

The APM80950KNBATR is a single-output LED driver IC from Allegro MicroSystems, designed for automotive applications. It operates as a buck converter with an adjustable output voltage and supports PWM dimming. The device features an internal switch capable of delivering up to 1.5A output current. It functions within a supply voltage range of 4.5V to 36V and includes a fixed minimum switching frequency of 2MHz. The component is housed in a 32-PowerFQFN package (4x6mm) with wettable flanks for enhanced soldering reliability. It is qualified to AEC-Q100 standards and operates across a junction temperature range of -40°C to +150°C.

Feature Summary

• Integrated high-side N-channel power switch for efficient buck conversion
• Supports analog and PWM dimming control for precise LED brightness regulation
• Wettable flank package design ensures reliable surface mount assembly
• Automotive-grade qualification compliant with AEC-Q100 standards

Applications

• Automotive exterior lighting systems
• LED headlamp modules
• Daytime running light circuits
• Tail lamp and brake light drivers

Procurement Notes

Verify the current lifecycle status before integration, as this specific part number has been marked as obsolete or end-of-life by the manufacturer. Confirm availability through authorized distributors or secondary markets if immediate procurement is required. Ensure that any replacement components maintain compatibility with the existing PCB footprint and electrical specifications to avoid redesign efforts.

Selection Notes

Select this component for designs requiring a compact, high-efficiency LED driver with integrated power switching. The 2MHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. The 1.5A current rating suits medium-power LED strings. Consider the 32-QFN package constraints regarding thermal dissipation and board space when finalizing the layout.

Part Context

This device belongs to the APM80950 series of LED drivers from Allegro MicroSystems. It is specifically engineered for automotive lighting applications where reliability and size are critical. The series typically integrates protection features such as over-current and thermal shutdown to ensure robust operation in harsh automotive environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct pin-to-pin replacements may require verification against updated datasheets from Allegro MicroSystems or alternative manufacturers offering similar automotive-grade buck LED drivers.