APM80904KNBATR

Overview

The APM80904KNBATR is a single-output LED lighting driver IC from Allegro MicroSystems, utilizing a buck topology. It operates with an input voltage range of 4.5V to 36V and delivers an output current of 1.5A. The device supports adjustable output voltages and features PWM dimming capabilities. It is housed in a 32-QFN (4x6mm) package and is rated for operation between -40°C and +150°C junction temperature.

Feature Summary

• Integrates a synchronous buck converter with internal power switches for high efficiency.
• Supports analog and PWM dimming control for precise LED brightness regulation.
• Designed with wettable flanks on the QFN package to enhance solder joint reliability.
• Complies with AEC-Q100 automotive qualification standards for robust performance.

Applications

• Automotive exterior lighting systems
• General-purpose LED illumination drivers
• High-reliability industrial lighting applications

Procurement Notes

Verify the specific suffix KNBATR against the manufacturer's latest datasheet to confirm package dimensions and tape-and-reel specifications. Ensure compatibility with the target PCB footprint, particularly regarding the 32-QFN thermal pad requirements. Confirm that the design accounts for the specified operating temperature range and input voltage limits to maintain optimal driver performance.

Selection Notes

Select this component when a compact, high-efficiency solution is required for driving LEDs from a wide input voltage range. The integrated buck topology reduces external component count compared to linear regulators. Consider the AEC-Q100 certification if the application demands automotive-grade reliability. Evaluate the thermal performance within the 32-QFN package constraints for the intended load current.

Part Context

This part belongs to the APM8090 series of LED drivers from Allegro MicroSystems. The series focuses on providing integrated solutions for automotive and industrial lighting. Similar parts in the lineup may vary in output current ratings or specific dimming interfaces, but share the common buck topology and automotive-grade packaging characteristics designed for harsh environments.

Replacement Considerations

Consult official Allegro MicroSystems documentation for verified cross-reference part numbers. Do not assume functional equivalence with other LED drivers without verifying pinout, electrical parameters, and thermal characteristics against the original specification sheet.