A8503EECTR-T

$3.60

Description：IC LED DRVR RGLTR PWM 25MA 26QFN
Series：-
Mfr：Allegro MicroSystems
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:6b6749e3693e Category: LED Drivers IC Brand: Allegro MicroSystems

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Product introduction

Product Detailed Parameters

Description：IC LED DRVR RGLTR PWM 25MA 26QFN
Series：-
Mfr：Allegro MicroSystems
Package：Tape & Reel (TR),Cut Tape (CT)
Type：DC DC Regulator
Topology：Step-Up (Boost)
Internal Switch(s)：Yes
Number of Outputs：6
Voltage - Supply (Min)：4.3V
Voltage - Supply (Max)：5.5V
Voltage - Output：-
Current - Output / Channel：25mA
Frequency：-
Dimming：PWM
Applications：Backlight
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：26-WFQFN Exposed Pad
Supplier Device Package：26-QFN/MLP (4x4)
Grade：-
Qualification：-

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A8503EECTR-T

Overview

The A8503EECTR-T is an LED driver IC manufactured by Allegro MicroSystems, designed for backlight applications. It integrates a DC-DC boost converter with six independent output channels, each capable of delivering up to 25mA. The device operates within a supply voltage range of 4.3V to 5.5V and supports PWM dimming control. Housed in a compact 26-WFQFN package with exposed pad (4x4mm), it functions reliably across an ambient temperature range of -40°C to 85°C.

Feature Summary

Integrates a high-efficiency boost DC-DC converter topology with internal switching elements
Provides six individually controllable constant-current LED output channels
Supports pulse-width modulation (PWM) dimming for precise brightness regulation

Applications

LCD backlight driving systems
Portable electronic display modules
Automotive instrument cluster illumination

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm RoHS3 compliance and moisture sensitivity level (MSL 1) requirements during storage and handling. Ensure the specific tape-and-reel packaging variant matches assembly line specifications. Cross-reference datasheet revisions to confirm pinout consistency before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring six-channel LED control with integrated power conversion. It is suitable for space-constrained designs utilizing the 26-QFN footprint. Consider thermal management capabilities given the surface-mount package type. Evaluate compatibility with system-level PWM dimming signals and input voltage ranges between 4.3V and 5.5V.

Part Context

This part belongs to the A8503 family of LED drivers from Allegro MicroSystems. It shares architectural similarities with other members like the A8500 series but differs in channel count and specific electrical characteristics. The family targets efficient backlighting solutions for consumer and industrial displays, emphasizing integration and reduced external component counts.