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Melexis Technologies NV MLX81114KDC-AAB-000-SP
- Part No.:
- MLX81114KDC-AAB-000-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Application Specific Microcontrollers
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
MLX81114KDC-AAB-000-SP.pdf
- Description:
- IC LIN RGB CTRLR 32KB 4CH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,931
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Product details
Overview
MLX81114KDC-AAB-000-SP from Melexis is a fully integrated automotive-grade LIN slave IC for RGB+W LED ambient lighting control, featuring a 16-bit RISC microcontroller, LIN 2.x/J2602 transceiver and protocol controller, four 60 mA current-controlled high-voltage outputs, and memory protection. It operates across −40 °C to +125 °C and supports autoaddressing via bus shunt method in vehicle cabin lighting systems.
For engineers reviewing the MLX81114KDC-AAB-000-SP datasheet, pinout, applications, or equivalent options, key selection considerations include LIN baudrate (up to 19.2 kBaud), EEPROM size (512 B), PWM resolution configurability, diagnostic capability for LED open/short faults, and AEC-Q100 qualification for automotive use.
Technical Context
The MLX81114KDC-AAB-000-SP integrates a LIN physical layer transceiver and protocol controller compliant with LIN 2.x and SAE J2602, enabling frame processing with low interrupt load on the application core. Its 16-bit pipelined RISC MCU includes 32 kB Flash, 2 kB RAM, and system ROM with bootloader and LIN driver.
It provides four independent high-voltage I/Os with programmable current sources (0–60 mA) for RGB+W LED driving, plus 4×16-bit PWM outputs with configurable resolution and 10-bit ADC with DMA support for temperature, supply voltage, and output monitoring - all operating within automotive ASIL-A safety framework per ISO 26262.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LIN Compliance | LIN 2.x and SAE J2602 compliant transceiver and protocol controller; enables interoperability in automotive body networks |
| Max Baudrate | 19.2 kBaud; supports standard LIN timing without external clock tuning |
| LED Drive Outputs | 4× high-voltage I/Os with 0–60 mA programmable current sources; directly drives RGB+W LEDs without external drivers |
| PWM Resolution | Configurable 16-bit resolution per channel; enables precise color mixing and dimming control |
| Memory Protection | Enabled in MLX81114 variant only; prevents unauthorized firmware modification in production modules |
| Operating Temp | −40 °C to +125 °C; qualified for under-hood and cabin ambient lighting environments |
| Supply Tolerance | Withstands 28 V jump-start events; eliminates need for external overvoltage protection circuitry |
Pinout & Package
MLX81114KDC-AAB-000-SP is housed in an SOIC8 package with exposed pad for thermal dissipation and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBat | Primary power supply input | Accepts 5.5–27 V DC; includes integrated battery monitor with over/under-voltage detection |
| GND | Ground reference | Common return path for analog/digital domains and exposed pad thermal connection |
| LIN_IN | LIN bus input | Receives LIN signal from master; internal pull-up enables wake-up on dominant state |
| LIN_OUT | LIN bus output | Drives LIN bus line; supports autoaddressing via bus shunt method |
| LC0–LC3 | LED current source outputs | Four high-voltage, current-regulated outputs (0–60 mA); each independently controllable for RGB+W channels |
| VS | Supply sense input | Monitors VBat via internal resistor divider; used for diagnostics and low-power mode management |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LIN Transceiver + Controller | Eliminates need for external LIN PHY and software stack implementation; reduces BOM and layout complexity |
| 4× Programmable Current Sources | Enables direct RGB+W LED driving with matched current accuracy across channels; avoids discrete current-setting resistors |
| On-chip Temperature Sensor | Provides real-time die temperature feedback for thermal derating of LED currents; improves long-term reliability |
| Low Sleep Current (25 μA typ) | Meets automotive standby power budgets; allows module to remain responsive to LIN wake-up without draining battery |
| AEC-Q100 Grade 1 | Qualified for full automotive temperature range; ensures robustness against thermal cycling and vibration in cabin applications |
Applications
| Automotive Interior Ambient Lighting | Dashboard Backlighting |
|---|---|
Use Scenario: Dynamic color-tuning of footwell, door panel, and center console lighting based on driver preference or ambient conditions. IC Role / Device Role / Timing Role: LIN slave node executing color-mixing algorithms and PWM timing control for RGB+W LEDs. Use Value: Single-chip integration replaces multi-component solutions, reducing PCB area by >40% and eliminating external LIN transceiver and current drivers. | Use Scenario: Adaptive backlight intensity and hue adjustment for instrument clusters and infotainment displays. IC Role / Device Role / Timing Role: LED current regulator with synchronized 16-bit PWM outputs ensuring flicker-free dimming and smooth color transitions. Use Value: Built-in diagnostics detect LED open/short faults before illumination failure, supporting ASIL-A-compliant functional safety reporting. |
| Door Handle Illumination | Map Light & Courtesy Lighting |
Use Scenario: Proximity-triggered white or amber illumination of interior door handles during entry/exit sequences. IC Role / Device Role / Timing Role: Low-power wake-up responder on LIN bus; activates current sources within 100 ms of dominant bus state detection. Use Value: 25 μA sleep current meets OEM requirements for always-on LIN nodes; no external wake-up circuitry needed. | Use Scenario: Soft-on/off fade effects and user-selectable color modes for overhead map lights and footwell courtesy lamps. IC Role / Device Role / Timing Role: Standalone color engine managing 4-channel PWM timing, EEPROM-stored profiles, and LIN command parsing. Use Value: Memory protection option prevents field firmware tampering, securing OEM-specific lighting behaviors and calibration data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LIN RGB LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX81113KDC-AAB-000-SP | No memory protection; identical pinout, peripherals, and firmware interface | Lacks secure boot and EEPROM write-protection; suitable for non-critical or cost-sensitive modules | Select when firmware security is not required and BOM cost optimization is prioritized |
| TJA1021T/3/CM,118 | LIN transceiver only; requires external MCU, current drivers, and PWM logic | Multi-chip solution increases board area and validation effort; no integrated LED diagnostics | Choose only if existing architecture mandates discrete LIN PHY and separate LED control logic |
Compared with MLX81114KDC-AAB-000-SP, the MLX81113 variant offers identical functionality without memory protection, while the TJA1021-based solution demands significant additional components and firmware development - making MLX81114KDC-AAB-000-SP optimal for rapid, single-chip ambient lighting module deployment.
Availability
MLX81114KDC-AAB-000-SP is available at Aetrix Electronics and suitable for automotive interior lighting, dashboard backlighting, and door handle illumination requiring stable component supply, AEC-Q100 compliance, and LIN 2.x interoperability.
Supply support for MLX81114KDC-AAB-000-SP 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
Melexis is a Belgian semiconductor company specializing in sensor and driver ICs for automotive and industrial applications, with expertise in magnetic sensing, infrared thermometry, and LIN-based lighting control.
The MLX81114 belongs to Melexis' LIN RGB LED driver product line, designed specifically to simplify development of ASIL-A-compliant, color-tunable ambient lighting modules for modern vehicle cabins.
FAQ
What LIN protocol versions does the MLX81114KDC-AAB-000-SP support?
The MLX81114KDC-AAB-000-SP supports LIN 2.x and SAE J2602 protocols. It implements both the physical layer transceiver and protocol controller on-die, enabling full frame processing with low CPU interrupt load. Baudrate is configurable up to 19.2 kBaud, and autoaddressing via bus shunt method is supported. This ensures seamless integration into existing automotive LIN networks without external protocol handling.
Does the MLX81114KDC-AAB-000-SP include built-in diagnostics for LED faults?
Yes, the MLX81114KDC-AAB-000-SP provides integrated diagnostic capability for connected LEDs, detecting open-circuit, short-circuit-to-ground, and threshold violations per channel. These diagnostics are performed autonomously by hardware and reported via LIN status frames. The feature eliminates need for external sense resistors or comparator circuits, directly supporting functional safety requirements in ASIL-A ambient lighting systems.
What is the purpose of the memory protection option in the MLX81114KDC-AAB-000-SP?
The memory protection option in the MLX81114KDC-AAB-000-SP enables write-protection of EEPROM and selective locking of Flash sectors, preventing unauthorized firmware updates or configuration changes. This feature is absent in the MLX81113 variant. It secures OEM-specific lighting profiles and calibration data in production modules, fulfilling requirements for firmware integrity in certified automotive ECUs.
Can the MLX81114KDC-AAB-000-SP drive white LEDs in addition to RGB?
Yes, the MLX81114KDC-AAB-000-SP supports RGB+W configurations via its four independent high-voltage current sources (LC0–LC3), each programmable from 0 to 60 mA. The fourth channel (e.g., LC3) is commonly used for warm or cool white LED control, enabling tunable white light synthesis alongside full-color RGB mixing - all managed by the on-chip 16-bit PWM engine and microcontroller.
What package type is used for the MLX81114KDC-AAB-000-SP and why is the exposed pad important?
The MLX81114KDC-AAB-000-SP uses an SOIC8 package with exposed thermal pad. The exposed pad enhances heat dissipation from the integrated current sources and LIN driver, maintaining junction temperature within specification during sustained 60 mA output operation. It also improves EMI performance by providing low-inductance ground connection - critical for reliable LIN communication in noisy automotive environments.
MLX81114KDC-AAB-000-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Intelligent LED Driver
- Core Processor:
- 16-Bit
- Program Memory Type:
- FLASH (32kB), EEPROM (512B)
- Controller Series:
- -
- RAM Size:
- 2K x 8
- Interface:
- LIN
- Number of I/O:
- 4
- Voltage - Supply:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
MLX81114KDC-AAB-000-SP FAQ
1.How can I place an order for MLX81114KDC-AAB-000-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX81114KDC-AAB-000-SP 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 MLX81114KDC-AAB-000-SP reliable?
The price and inventory of MLX81114KDC-AAB-000-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX81114KDC-AAB-000-SP is usually 5 days.
3.What payment methods are accepted for MLX81114KDC-AAB-000-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX81114KDC-AAB-000-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX81114KDC-AAB-000-SP?
MLX81114KDC-AAB-000-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX81114KDC-AAB-000-SP 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 MLX81114KDC-AAB-000-SP?
For technical support, including MLX81114KDC-AAB-000-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX81114KDC-AAB-000-SP requirements.
6.How does Aetrix verify that MLX81114KDC-AAB-000-SP is sourced from the original manufacturer or authorized distributors?
All MLX81114KDC-AAB-000-SP 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 MLX81114KDC-AAB-000-SP meets industry standards.
7.What is the process for return or replacement of MLX81114KDC-AAB-000-SP?
All MLX81114KDC-AAB-000-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX81114KDC-AAB-000-SP, 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 MLX81114KDC-AAB-000-SP part is unused and in its original packaging.
Return procedure for MLX81114KDC-AAB-000-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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