APM80951KNBATR

Overview

The APM80951KNBATR is a single-output LED driver IC from Allegro MicroSystems, designed for automotive lighting applications. It operates as a synchronous buck converter with an adjustable output voltage and supports PWM dimming. The device features an internal switch and accepts input voltages between 4.5V and 36V. It is housed in a 32-QFN (4x6mm) package with wettable flanks for enhanced solderability. Certified to AEC-Q100 standards, it functions within a junction temperature range of -40°C to +150°C.

Feature Summary

• Integrated synchronous buck topology for high-efficiency power conversion
• Supports pulse-width modulation (PWM) dimming control
• Automotive-grade reliability with AEC-Q100 certification
• Surface-mount package with wettable flanks for improved inspection

Applications

• Automotive exterior lighting systems
• LED headlamp modules
• Adaptive driving beam applications
• High-power LED illumination circuits

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package variant matches design requirements. Check for alternative sources if immediate availability is critical. Ensure storage conditions meet moisture sensitivity level specifications prior to assembly.

Selection Notes

Select this component for designs requiring integrated buck regulation and precise LED current control. Consider the 32-QFN footprint for space-constrained layouts. Evaluate thermal management needs given the high operating temperature rating. Verify compatibility with existing PWM dimming signals in the system architecture.

Part Context

This part belongs to the APM series of highly integrated power management solutions. It complements other Allegro automotive drivers by providing a compact, efficient solution for direct LED drive without external inductors or complex gate drivers. The series focuses on reducing bill of materials count in modern vehicle lighting architectures.

Replacement Considerations

The datasheet indicates End-of-Life status. No official substitute part numbers are documented in the provided source material. Engineers should evaluate newer generations from the manufacturer or perform full qualification for any third-party pin-compatible alternatives.