A8500EECTR-T

Overview

The A8500EECTR-T is an integrated LED driver IC manufactured by Allegro MicroSystems, designed for backlighting applications. It features eight independent output channels, each capable of delivering a regulated current of 25 mA. The device incorporates an internal boost DC-DC converter topology with a switching frequency of 2 MHz. It operates within a supply voltage range of 4.2 V to 5.5 V and supports module, multi-stage, and PWM dimming methods. The component is housed in a 26-QFN/MLP (4x4 mm) surface-mount package with an exposed pad.

Feature Summary

• Integrates an internal boost converter with eight independent 25 mA current sinks
• Supports multiple dimming control methods including PWM and multi-stage modulation
• Operates on a single low-voltage power supply without external inductors

Applications

• LCD panel backlighting systems
• Medium-size display illumination modules
• Consumer electronics lighting circuits

Procurement Notes

Verify the specific suffix EECTR-T against official datasheets to confirm the 26-QFN package and tape-and-reel orientation. Confirm RoHS3 compliance status as indicated in public records. Note that this part number is listed as obsolete; ensure replacement availability before finalizing procurement plans.

Selection Notes

Select this component when designing compact LED drivers requiring high integration and low input voltage operation. The fixed 25 mA per channel rating suits low-power indicator or small display backlights. Verify thermal dissipation requirements for the QFN package under continuous load conditions.

Part Context

This device belongs to the A8500 series of multi-output LED drivers from Allegro MicroSystems. It is engineered for space-constrained portable devices where board area and component count are critical constraints. The series emphasizes efficiency through integrated power switching.

Replacement Considerations

Public records identify A8522KLPTR-T and ALT80600KESJSR as similar alternative components from Allegro MicroSystems.