Diodes Incorporated AL5887QJAZW52-13

Overview

AL5887QJAZW52-13 from Diodes Incorporated is a 36-channel I²C/SPI programmable LED driver IC for automotive-grade RGB lighting control, featuring 12-bit per-channel PWM at 30 kHz, 70 mA max channel current, AEC-Q100 Grade 1 qualification, and operation from −40°C to +125°C ambient. It supports up to 12 RGB modules via three independent software-controllable banks (A/B/C) and uses an external R_SET resistor to globally scale all 36 current sinks.

For engineers reviewing the AL5887QJAZW52-13 datasheet, AL5887QJAZW52-13 pinout, AL5887QJAZW52-13 application, or AL5887QJAZW52-13 equivalent, this device delivers precise color mixing with independent 8-bit color and brightness registers per channel, logarithmic/linear dimming selection, open/short LED fault detection, and ultra-low 1 μA shutdown current - critical for infotainment backlighting, status indicators, and touch-panel illumination in thermally constrained automotive environments.

Technical Context

The AL5887Q integrates a 16 MHz internal oscillator feeding a 30 kHz PWM generator per channel, with 9-bit base resolution enhanced by 3-bit dithering to achieve true 12-bit effective duty-cycle control. Each of the 36 current-sink outputs is independently configurable via dedicated color-mixing (8-bit R/G/B) and brightness-control (8-bit) registers mapped to RGB modules.

Interface selection is hardware-defined by the INT_SEL pin: low enables 400 kHz I²C with ADDR0/ADDR1 pins for slave addressing; high enables 4 MHz SPI with SPISCL_ADDR1, SPISDA_ADDR0, SPISDO_SDA, and SPICS_SCL. Fault reporting uses an open-drain FAULT pin with configurable masking per channel and pre-thermal warning at +145°C.

Key Specifications

Pinout & Package

Package: W-QFN6060-52/SWP (Type A1), 6 mm × 6 mm wettable flank QFN with exposed thermal pad (GND-connected).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED driver applications.

Compared with TLC59731DR and ASL2800SHN, the AL5887QJAZW52-13 uniquely combines 36-channel scalability, AEC-Q100 Grade 1 compliance, hardware-selectable dual-interface support, and per-RGB-module banked control - making it the only option for automotive interior lighting systems requiring synchronized multi-zone color animation with full diagnostics.

Availability

AL5887QJAZW52-13 is available at Aetrix Electronics and suitable for automotive interior lighting, infotainment display backlights, and touch-panel status indicators requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.

Supply support for AL5887QJAZW52-13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and ICs, specializing in high-reliability power management, signal integrity, and lighting solutions for automotive, industrial, and consumer markets.

The AL5887Q belongs to Diodes' AEC-Q100-qualified LED driver product line, engineered specifically for automotive cabin lighting systems demanding precise color control, thermal resilience, and functional safety-aware diagnostics.

FAQ

What communication interfaces does the AL5887QJAZW52-13 support, and how is selection implemented?

The AL5887QJAZW52-13 supports both I²C (up to 400 kHz) and SPI (up to 4 MHz) interfaces. Selection is hardware-based via the INT_SEL pin: logic LOW configures SPISDO_SDA, SPICS_SCL, SPISDA_ADDR0, and SPISCL_ADDR1 as I²C SDA/SCL and address pins; logic HIGH reassigns them to SPI functions. No firmware configuration is required.

How is LED current calibrated across all 36 channels, and what is the role of the IREF pin?

LED current is calibrated globally using an external resistor (R_SET) connected between IREF and GND. The IREF pin outputs a stable 0.7 V reference, establishing a proportional current source that sets the full-scale output for all 36 channels. Channel-specific current is then digitally scaled via 6-bit global dimming and per-module brightness registers.

Does the AL5887QJAZW52-13 support individual fault reporting per LED channel, and how is it implemented?

Yes - the AL5887QJAZW52-13 provides per-channel open-circuit and short-circuit detection with individually maskable fault reporting. Fault status is aggregated on the open-drain FAULT pin, while dedicated registers (Open_Fault_Mask, Short_Fault_Mask, Open_Threshold, Short_Threshold) allow selective enabling and threshold tuning for each of the 36 outputs.

What thermal protection mechanisms are built into the AL5887QJAZW52-13, and how do they behave?

The AL5887QJAZW52-13 includes two thermal protections: a pre-thermal warning at +145°C (asserts FAULT pin without disabling outputs) and hard thermal shutdown at +165°C (forces all outputs OFF until junction cools by 20°C hysteresis). Both thresholds are factory-trimmed and operate independently of MCU control.