A8504EECTR-T

Overview

The A8504EECTR-T is an integrated LED driver IC designed for backlighting applications. It features eight independent output channels, each capable of sourcing up to 45 mA. The device incorporates a boost DC-DC converter topology with an internal switch, operating within a supply voltage range of 4.2 V to 5.5 V. It supports PWM dimming control and functions at a switching frequency of 2 MHz. The component is housed in a 26-WFQFN package with exposed pad (4x4 mm) and is rated for an ambient operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates a current-mode boost converter with eight individual constant-current sinks
• Supports multi-stage and PWM dimming control methods for brightness regulation
• Features internal power switches to minimize external component count
• Designed for high-efficiency operation in compact display backlighting systems

Applications

• Backlighting for LCD panels
• Medium-size display illumination
• Portable electronic device lighting

Procurement Notes

Verify the specific ordering suffix EECTR-T against the manufacturer's official documentation to confirm tape-and-reel packaging and lead-free status. Confirm that the part number matches the exact electrical specifications required for the target application, as variations may exist within the product family. Ensure compliance with RoHS3 and REACH regulations as stated in the datasheet.

Selection Notes

Select this component when designing circuits requiring multiple independently controlled LED channels from a single low-voltage supply. The integrated boost converter allows operation from inputs lower than the forward voltage of the LED string. Consider the 45 mA per channel limit and the thermal performance of the 26-QFN package for the intended load.

Part Context

This part belongs to the Allegro A8500 series of multi-output LED drivers. These devices are engineered to simplify the design of complex backlighting systems by combining power management and drive functions into a single small-footprint package. The series targets consumer electronics and industrial displays where space efficiency and high reliability are critical.

Replacement Considerations

The A8500EECTR-T is listed as a similar alternative within the same product family. Verify pin compatibility and electrical parameters before substitution.