APM80900KNBATR

Overview

The APM80900KNBATR is a synchronous buck LED driver IC from Allegro MicroSystems, housed in a 32-QFN (4x6 mm) package. It operates with an input voltage range of 4.5 V to 36 V and delivers up to 1.5 A output current. The device supports adjustable output voltages between 2.65 V and 25 V. Key electrical parameters include a switching frequency of 2 MHz and a minimum supply voltage of 4.5 V. It features analog and PWM dimming capabilities and is rated for junction temperatures from -40°C to +150°C.

Feature Summary

• Integrates internal power switches within a compact synchronous buck topology for efficient LED regulation.
• Supports both analog and pulse-width modulation (PWM) dimming methods for precise light control.
• Designed with wettable flanks on the QFN package to facilitate automated optical inspection and improve solder joint reliability.
• Certified to AEC-Q100 standards for automotive-grade durability and performance.

Applications

• Automotive exterior lighting systems
• General-purpose LED illumination circuits
• DC-DC regulated LED driver modules

Procurement Notes

Verify the specific suffix KNBATR against the manufacturer's latest datasheet to confirm package dimensions and marking details. Ensure compatibility with the target PCB footprint for the 32-QFN form factor. Check for any recent product change notices regarding material composition or shipping configuration updates.

Selection Notes

Select this component when a single-channel buck regulator is required for automotive or industrial LED applications. It is suitable for designs needing integrated switching elements and wide input voltage tolerance. Consider the thermal performance of the 32-QFN package relative to the expected load current and ambient conditions.

Part Context

This part belongs to the APM80900 series of LED drivers manufactured by Allegro MicroSystems. The series focuses on high-efficiency power management for lighting applications. The APM80900KNBATR variant specifically denotes the tape-and-reel packaging format and the qualified automotive-grade version of the base chip.

Replacement Considerations

Consult official substitution guides for direct equivalents within the APM80900 family. Verify pinout compatibility before replacing with other Allegro LED driver models. Cross-reference specifications with competitors only if functional requirements exceed the original design constraints.