Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Development Boards, Kits, Programmers > Evaluation Boards > LED Driver Evaluation Boards

Diodes Incorporated AL8862QEV1

Name: AL8862QEV1
Brand: Diodes Incorporated
SKU: AL8862QEV1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AL8862QEV1

Manufacturer:: Diodes Incorporated

Category:: LED Driver Evaluation Boards

Package:

Datasheet:: AL8862QEV1.pdf

Description:: EVAL BOARD FOR AL8862Q

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,959

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

AL8862Q from Diodes Incorporated is an AEC-Q100 Grade 1 automotive step-down DC/DC converter for constant-current LED driving, operating from 5V to 55V input, delivering up to 1A output current with ±4% accuracy, integrated 55V NDMOS switch, and 1MHz switching frequency-used in automotive interior/exterior LED lamps with open-circuit, short-circuit, and overtemperature protection.

For engineers reviewing the AL8862Q datasheet, AL8862Q pinout, AL8862Q application, or AL8862Q equivalent, this page delivers verified technical context, package-specific pin functions, dimming control behavior, fault signaling logic, and automotive-grade thermal and reliability specifications.

Technical Context

The AL8862Q implements hysteresis-based current-mode control with internal 100mV SET threshold (±4% tolerance), enabling precise average LED current regulation via external RSET. Its single CTRL pin supports both analog dimming (0.4–2.5V = 10–100% I_{OUT_NOM}) and PWM dimming (0.3V/2.6V logic thresholds, <1µs transition).

Fault detection includes open-LED, current-sense resistor short, and overtemperature shutdown (T_OTP = +150°C, hysteresis = +30°C), reported via open-drain FAULT pin requiring external pull-up. The device integrates power switch, high-side current sensing, and VDD generator-no external bootstrap capacitor required.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	5V to 55V - supports full automotive battery range including load dump transients up to 65V absolute max.
Output Current Accuracy	±4% typical - ensures uniform brightness across LED strings without binning or calibration.
Switching Frequency	Up to 1MHz - enables compact 47μH inductors and reduces EMI filtering footprint.
Integrated Switch	55V NDMOS with 0.4Ω R_DS(on) - eliminates external MOSFET, simplifies layout, and sustains 1A continuous output.
CTRL Pin Function	Single-pin on/off + dimming - accepts 0.4–2.5V analog or 0.3V/2.6V PWM, eliminating separate enable/dim inputs.
Fault Reporting	Open-drain FAULT pin - asserts low for open LED, RSET short, or T_J > 150°C, compatible with microcontroller GPIO monitoring.
Thermal Resistance (SO-8EP)	θ_JA = 58°C/W - enables 1A operation at +125°C ambient with minimal copper area (2″×2″, 2oz FR-4).

Pinout & Package

AL8862Q is available in two thermally enhanced packages: SO-8EP (exposed pad soldered to GND) and V-DFN3030-8/SWP (Type A). Both support automotive PPAP and IATF 16949 manufacturing.

Pin/Terminal	Circuit Role	Design Meaning
SET	Current sense reference input	Connects to VIN via RSET; sets nominal LED current (I_OUT ≈ 0.1V / RSET) with 100mV ±4% threshold.
GND (Pins 2,7 / 2,6)	Power and signal ground reference	Common return for internal circuitry, SW freewheel path, and FAULT pull-up; EP must be soldered to PCB GND plane.
FAULT	Open-drain fault indicator	Drives low during open LED, RSET short, or overtemperature; requires external pull-up resistor to VIN or logic rail.
VIN	Main power input	Accepts 5–55V; requires ≥10μF X7R ceramic decoupling capacitor placed adjacent to pin to suppress ripple and EMI.
SW	Switch node output	Drives inductor and freewheel diode; high dI/dt node-minimize trace length and loop area to reduce radiated emissions.
CTRL	Multi-function control input	0.3V cutoff disables output; 0.4–2.5V analog dimming; 0.3V/2.6V PWM; soft-start time adjustable via C_CTRL-to-GND (1.5ms/nF).

Key Features

Feature	Design Value
Automotive qualification	AEC-Q100 Grade 1 (−40°C to +125°C ambient), PPAP-capable, manufactured in IATF 16949 facilities.
Integrated protection	Detects and responds to open LED, RSET short, and overtemperature-no external fault logic required.
High efficiency	Up to 97% at 16V input/9.9V output - achieved via low R_DS(on) switch and optimized gate drive.
Dimming flexibility	Single-pin analog (linear 10–100%) and PWM (1–100% duty cycle) control-compatible with MCU GPIO or dedicated dimmer ICs.
Green packaging	Halogen- and antimony-free, lead-free, RoHS 3 compliant (Br+Cl <1500ppm, Sb <1000ppm).

Applications

Automotive Interior Lighting

Automotive Exterior Lighting

Use Scenario: Dome lights, map lights, and footwell illumination in passenger vehicles.

IC Role / Device Role / Timing Role: Constant-current LED driver regulating brightness across varying battery voltage (9–16V) and temperature (−40°C to +85°C).

Use Value: Eliminates ballast resistors, maintains consistent luminance during cold cranking (5V), and meets OEM EMC requirements via 1MHz switching.

Use Scenario: Daytime running lights (DRL), side marker lamps, and license plate illumination.

IC Role / Device Role / Timing Role: High-reliability buck controller sustaining 55V load dump transients while delivering stable 1A to multi-LED strings.

Use Value: Integrated fault reporting enables fail-safe lamp-out detection per UNECE R87; AEC-Q100 qualification ensures field longevity.

Commercial Vehicle Cab Lighting

Truck Trailer Lighting

Use Scenario: LED lighting modules in heavy-duty truck cabs with wide input range (12V/24V systems).

IC Role / Device Role / Timing Role: Step-down regulator maintaining 1A output despite input swings from 5V (start-stop) to 36V (alternator surge).

Use Value: SO-8EP thermal performance enables convection-cooled design; no heatsink needed for 1A at +85°C ambient.

Use Scenario: LED tail lamps and stop lamps on semi-trailers powered via 24V ISO 11898 harnesses.

IC Role / Device Role / Timing Role: Fault-tolerant LED driver detecting open circuits (broken lamp filament) and reporting via FAULT pin to trailer control unit.

Use Value: Inherent open-LED protection replaces discrete comparators; reduces BOM count and improves diagnostic coverage.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AL8863Q	Same pinout, higher 1.5A output capability, 1.2MHz max f_SW, identical CTRL/FAULT interface.	Supports higher-power LED arrays (e.g., fog lamps); requires larger inductor and RSET scaling.	Select when >1A output or faster switching is required; drop-in replacement with minor RSET adjustment.
LM3409QMYX/NOPB	External MOSFET driver (no integrated switch), 60V max VIN, 1.5MHz f_SW, analog/PWM dimming, no FAULT pin.	Requires external 55V MOSFET and current-sense amplifier; lacks integrated fault reporting.	Choose for designs needing higher efficiency at >1.2A or custom FET selection; adds complexity but improves thermal scalability.

Compared with AL8862Q, AL8863Q offers higher current headroom in same footprint, while LM3409QMYX provides greater thermal flexibility at cost of added components and loss of integrated fault signaling.

Availability

AL8862Q is available at Aetrix Electronics and suitable for automotive interior lighting, exterior lighting, commercial vehicle cab modules, and trailer lighting requiring stable component supply across extended temperature and voltage ranges.

Supply support for AL8862Q 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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions, with strong focus on automotive, industrial, and power management markets.

The AL8862Q belongs to Diodes' automotive LED driver product line, engineered specifically for AEC-Q100-compliant constant-current lighting in harsh environments where reliability, fault resilience, and PPAP readiness are mandatory.

FAQ

What is the minimum input voltage required for AL8862Q to start switching?

The AL8862Q features undervoltage lockout (UVLO) with a rising threshold of 4.8V and 200mV hysteresis. It begins switching only when VIN exceeds 4.8V and remains active down to 4.6V. Below 4.6V, the device shuts down completely-ensuring reliable operation during automotive cold-crank events where battery voltage may dip to 5V.

How does the CTRL pin behave during soft-start, and what capacitor value yields 5ms total soft-start time?

The default soft-start time is 0.1ms; adding capacitance from CTRL to GND extends it by ~1.5ms per nanofarad. For 5ms total, use C_CTRL = (5ms − 0.1ms) / 1.5ms/nF ≈ 3.27nF → select 3.3nF standard value. This slows CTRL voltage ramp, delaying switch activation and reducing inrush current during power-up.

Can AL8862Q drive LEDs in parallel, or is series connection mandatory?

AL8862Q is designed exclusively for series-connected LEDs. Its high-side current sensing regulates average current through the entire string-parallel configurations would cause unequal current sharing due to V_F mismatch, risking thermal runaway. The datasheet explicitly states "series connection of the LEDs provides identical LED currents" and does not support parallel topologies.

What failure modes trigger the FAULT pin, and how is recovery handled?

FAULT asserts low for three conditions: open LED string (no current flow), shorted RSET (excessive current), or junction temperature exceeding +150°C. Recovery is automatic: FAULT returns high after fault condition clears and internal hysteresis (30°C) allows safe restart. No reset pulse or power cycle is required-enabling seamless re-illumination after transient faults.

AL8862QEV1 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Packaging:: Box

Product Status:: Active

Current - Output / Channel:: 1A

Outputs and Type:: 1 Non-Isolated Output

Voltage - Output:: 50V

Features:: Dimmable

Voltage - Input:: 5V ~ 55V

Contents:: Board(s)

Utilized IC / Part:: AL8862Q

AL8862QEV1 FAQ

1.How can I place an order for AL8862QEV1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AL8862QEV1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AL8862QEV1 reliable?

The price and inventory of AL8862QEV1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL8862QEV1 is usually 5 days.

3.What payment methods are accepted for AL8862QEV1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL8862QEV1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AL8862QEV1?

AL8862QEV1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AL8862QEV1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AL8862QEV1?

For technical support, including AL8862QEV1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL8862QEV1 requirements.

6.How does Aetrix verify that AL8862QEV1 is sourced from the original manufacturer or authorized distributors?

All AL8862QEV1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AL8862QEV1 meets industry standards.

7.What is the process for return or replacement of AL8862QEV1?

All AL8862QEV1 units undergo pre-shipment inspection (PSI). If there is an issue with AL8862QEV1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AL8862QEV1 part is unused and in its original packaging.

Return procedure for AL8862QEV1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…