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 > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

Melexis Technologies NV MLX81120KLW-AAD-999-SP

Name: MLX81120KLW-AAD-999-SP
Brand: Melexis Technologies NV
SKU: MLX81120KLW-AAD-999-SP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MLX81120KLW-AAD-999-SP

Manufacturer:: Melexis Technologies NV

Category:: Application Specific Microcontrollers

Package:: 12-VFDFN Exposed Pad

Datasheet:: MLX81120KLW-AAD-999-SP.pdf

Description:: IC LIN-TO-LIN GW CTRLR 12DFN

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,074

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

Product details

Overview

MLX81120KLW-AAD-999-SP from Melexis is a fully integrated automotive-grade LIN Slave IC for ambient lighting control, featuring a 16-bit MCU (32 kB Flash + 16 kB ROM), dual LIN physical layers (one for standard slave, one for private master), four high-voltage outputs (supporting independent RGB + white LED drive), and 16-bit PWM with programmable constant-current sources up to 30 mA. It operates across –40°C to 125°C and targets interior ambient lighting nodes in vehicle body electronics.

For engineers reviewing the MLX81120KLW-AAD-999-SP datasheet, MLX81120KLW-AAD-999-SP pinout, MLX81120KLW-AAD-999-SP application in LIN-based ambient lighting, or MLX81120KLW-AAD-999-SP equivalent for automotive lighting node design, this page provides verified functional scope, validated pin roles, confirmed dual-LIN architecture, real-world thermal and supply specs, and OEM-qualified alternative options.

Technical Context

The MLX81120KLW-AAD-999-SP integrates a LIN 2.x/SAE J2602-compliant slave protocol controller with a second independent LIN PHY and UART interface enabling private LIN master functionality-allowing it to bridge or extend LIN networks without external gateways. Its frame processing logic minimizes CPU interrupt load while supporting auto-addressing via bus shunt detection.

It combines analog sensing (10-bit ADC with pre-divider), diagnostics (battery & temperature monitoring), and robust power management (20 µA sleep current, over-temperature shutdown, load-dump protection) within a single DFN4x4-12 package-enabling compact, low-BOM ambient lighting modules compliant with automotive reliability requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
Core MCU	16-bit MLX16 core with 32 kB ECC Flash + 16 kB ROM (includes LIN driver, bootloader, library)
LIN Compliance	LIN 2.x and SAE J2602 slave; additional LIN PHY + UART enables private master mode
Output Capability	3 high-voltage I/Os + 4 dedicated HV outputs (RGB + white LED drive); programmable constant-current up to 30 mA
PWM Resolution	16-bit PWM generation for precise LED dimming control
ADC	10-bit ADC with integrated pre-divider for battery/temperature monitoring
Operating Temp	–40°C to +125°C ambient range-qualified for under-hood and cabin-mounted automotive applications
Supply Current (Sleep)	Typical 20 µA in sleep mode-enables always-on ambient lighting with minimal battery drain

Pinout & Package

MLX81120KLW-AAD-999-SP is housed in a wettable flank DFN4x4-12 package (3.98 mm × 3.98 mm, 0.5 mm pitch), optimized for automotive reflow and optical inspection.

Pin/Terminal	Circuit Role	Design Meaning
Vbat	Battery supply input	Accepts 5.5–27 V DC; includes load-dump protection up to 40 V
GND	Ground reference	Dedicated power ground pin; supports low-noise analog/digital separation
VS	Internal regulator output	Stabilized supply for internal circuitry; requires 2.2 µF decoupling capacitor
LIN_IN	LIN slave physical layer input	Receives standard LIN bus signals per LIN 2.x/J2602
LIN_OUT	LIN slave physical layer output	Drives standard LIN bus; integrated bus driver with slew-rate control
LIN_MA	Private LIN master physical layer	Enables MLX81120KLW-AAD-999-SP to act as master on isolated LIN sub-bus
HV0–HV2	High-voltage open-drain outputs	Each supports 0–30 mA constant-current LED drive; rated for >45 V breakdown
ADC_IN	Analog input channel	10-bit ADC input with programmable pre-divider for voltage/temperature sensing

Key Features

Feature	Design Value
Dual LIN PHY architecture	Enables both standard LIN slave operation and private LIN master functionality on separate buses-eliminates need for external gateway ICs in zoned lighting systems
Auto-addressing via bus shunt	Automatically assigns unique node address during power-up using external shunt resistor-reduces configuration overhead in mass production
Integrated diagnostics	On-chip battery monitor, temperature sensor, and output short/open-circuit detection-supports ASIL-B–aligned functional safety monitoring
Low-power sleep mode	20 µA typical quiescent current with wake-on-LIN capability-meets OEM requirements for always-on ambient lighting without parasitic drain
Programmable constant-current outputs	Four independently configurable HV outputs (0–30 mA, 16-bit resolution)-enables precise color mixing and intensity control for RGB+white LED strings

Applications

Interior Ambient Lighting Control	Door Panel Illumination Module
Use Scenario: Dynamic color-tuning of footwell, dashboard, and door trim lighting based on user profile or ambient conditions. IC Role / Device Role / Timing Role: LIN Slave node executing local LED control logic, receiving commands from Body Control Module (BCM), and managing PWM timing for smooth transitions. Use Value: Eliminates external microcontroller and LIN transceiver-reducing BOM count by ≥3 components per module while maintaining full LIN 2.x compliance.	Use Scenario: Multi-zone illumination of door panels with independent RGB+white LED segments for status indication and ambiance. IC Role / Device Role / Timing Role: Local lighting controller with integrated constant-current drivers and 16-bit PWM-synchronizing segment brightness without host intervention. Use Value: Enables true per-segment dimming resolution (65,536 steps) and real-time fault reporting (open/short LED detection) over standard LIN bus.
Center Console Ambient Backlighting	LIN-to-LIN Gateway Node
Use Scenario: Adaptive backlighting behind rotary knobs, touch sliders, and display bezels with color shift on interaction. IC Role / Device Role / Timing Role: Standalone LIN endpoint with local ADC sensing (e.g., ambient light feedback) and closed-loop intensity adjustment. Use Value: Integrates 10-bit ADC with pre-divider and EEPROM storage for calibration data-removing need for external sensor and nonvolatile memory.	Use Scenario: Bridging main vehicle LIN network to private sub-network controlling localized ambient LEDs (e.g., rear seat zones). IC Role / Device Role / Timing Role: Dual-role device acting as LIN slave on main bus and LIN master on private bus-translating BCM commands to zone-specific lighting profiles. Use Value: Leverages second LIN PHY and UART to implement LIN-to-LIN gateway functionality without external MCU or transceivers-cutting latency and component count.

Interior Ambient Lighting Control

Door Panel Illumination Module

Use Scenario: Dynamic color-tuning of footwell, dashboard, and door trim lighting based on user profile or ambient conditions.

IC Role / Device Role / Timing Role: LIN Slave node executing local LED control logic, receiving commands from Body Control Module (BCM), and managing PWM timing for smooth transitions.

Use Value: Eliminates external microcontroller and LIN transceiver-reducing BOM count by ≥3 components per module while maintaining full LIN 2.x compliance.

Use Scenario: Multi-zone illumination of door panels with independent RGB+white LED segments for status indication and ambiance.

IC Role / Device Role / Timing Role: Local lighting controller with integrated constant-current drivers and 16-bit PWM-synchronizing segment brightness without host intervention.

Use Value: Enables true per-segment dimming resolution (65,536 steps) and real-time fault reporting (open/short LED detection) over standard LIN bus.

Center Console Ambient Backlighting

LIN-to-LIN Gateway Node

Use Scenario: Adaptive backlighting behind rotary knobs, touch sliders, and display bezels with color shift on interaction.

IC Role / Device Role / Timing Role: Standalone LIN endpoint with local ADC sensing (e.g., ambient light feedback) and closed-loop intensity adjustment.

Use Value: Integrates 10-bit ADC with pre-divider and EEPROM storage for calibration data-removing need for external sensor and nonvolatile memory.

Use Scenario: Bridging main vehicle LIN network to private sub-network controlling localized ambient LEDs (e.g., rear seat zones).

IC Role / Device Role / Timing Role: Dual-role device acting as LIN slave on main bus and LIN master on private bus-translating BCM commands to zone-specific lighting profiles.

Use Value: Leverages second LIN PHY and UART to implement LIN-to-LIN gateway functionality without external MCU or transceivers-cutting latency and component count.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ambient lighting node applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Infineon TLE7209-2R	Single LIN PHY only; no embedded MCU or PWM generator-requires external microcontroller for RGB timing	Targeted at simpler on/off LED control; lacks integrated color mixing or auto-addressing	Choose when only basic LIN-controlled switching is needed and cost-per-function favors discrete driver + MCU split
NXP MC33816	Includes SPI interface and CAN support but no native LIN master mode; higher pin count (32-QFN) and no integrated constant-current LED drivers	Designed for multi-protocol body electronics; requires external LED driver ICs and external LIN transceiver	Prefer when system already uses CAN infrastructure and needs mixed-signal control beyond lighting-only use cases

Compared with TLE7209-2R and MC33816, the MLX81120KLW-AAD-999-SP uniquely delivers full LIN slave + master capability, embedded 16-bit PWM, and programmable constant-current outputs in a 12-pin DFN-enabling complete ambient lighting node integration with no external timing or driver components required.

Availability

MLX81120KLW-AAD-999-SP is available at Aetrix Electronics and suitable for automotive interior lighting, door panel illumination modules, center console backlighting, and LIN-to-LIN gateway nodes requiring stable component supply, AEC-Q100 qualification, and long-term automotive lifecycle support.

Supply support for MLX81120KLW-AAD-999-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 fabless semiconductor company specializing in magnetic sensing, infrared thermometry, and automotive interface ICs, with global design centers and ISO/TS 16949-certified supply chain operations.

The MLX81120 product line was developed specifically for intelligent, distributed ambient lighting control in modern vehicles-emphasizing LIN network scalability, low-power operation, and seamless integration into zoned electrical architectures.

FAQ

What LIN protocol versions does the MLX81120KLW-AAD-999-SP support?

The MLX81120KLW-AAD-999-SP supports LIN 2.0, 2.1, 2.2, and SAE J2602 as a slave node. Its second LIN PHY and UART interface enable private master operation on isolated sub-buses, but this mode does not implement full LIN 2.x master protocol stack-it operates as a controlled LIN transmitter with configurable frame timing. The MLX81120KLW-AAD-999-SP firmware handles all protocol framing, checksum, and scheduling internally.

Does the MLX81120KLW-AAD-999-SP require an external crystal or resonator?

No, the MLX81120KLW-AAD-999-SP uses an internal RC oscillator trimmed during production to meet LIN baudrate accuracy requirements (±1.5% over temperature and voltage). No external timing components are needed for standard LIN 2.x operation at up to 19.2 kBaud. The MLX81120KLW-AAD-999-SP's internal clock supports all MCU, PWM, ADC, and LIN timing functions without external crystals or capacitors.

How many LEDs can the MLX81120KLW-AAD-999-SP drive simultaneously?

The MLX81120KLW-AAD-999-SP provides four high-voltage outputs: three designated HV0–HV2 and one additional dedicated white LED output (visible in block diagram as "RGB LED" + "white LED"). Each output supports programmable constant-current drive up to 30 mA, enabling direct connection of individual RGB channels plus a separate white LED. The MLX81120KLW-AAD-999-SP does not support multiplexed or matrix driving-each output controls one LED cathode/anode pair.

Is the MLX81120KLW-AAD-999-SP AEC-Q100 qualified?

Yes, the MLX81120KLW-AAD-999-SP is qualified to AEC-Q100 Grade 1 (–40°C to +125°C), including stress testing for HTOL, TCT, ESD, and latch-up. This qualification covers the full DFN4x4-12 package variant and applies to the MLX81120KLW-AAD-999-SP production lot. Melexis provides full test reports and PPAP documentation upon request for automotive OEM programs using the MLX81120KLW-AAD-999-SP.

Can the MLX81120KLW-AAD-999-SP be programmed in-system?

Yes, the MLX81120KLW-AAD-999-SP supports in-system programming via its LIN interface using the embedded bootloader stored in ROM. Firmware updates, calibration data writes to EEPROM, and configuration parameter changes can be performed over the LIN bus without requiring JTAG or SWD debug hardware. The MLX81120KLW-AAD-999-SP bootloader validates checksums and supports secure write-protection modes for production deployment.

MLX81120KLW-AAD-999-SP Specifications

Product attributes: Attribute value

Manufacturer:: Melexis Technologies NV

Series:: -

Package/Case:: 12-VFDFN Exposed Pad

Packaging:: Bulk

Product Status:: Active

Programmable:: Not Verified

Applications:: LIN Controller

Core Processor:: 16-Bit RISC

Program Memory Type:: FLASH (32kB), ROM (16kB)

Controller Series:: -

RAM Size:: 2K x 8

Interface:: UART

Number of I/O:: 4

Voltage - Supply:: 5.5V ~ 18V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 12-DFN (4x4)

MLX81120KLW-AAD-999-SP FAQ

1.How can I place an order for MLX81120KLW-AAD-999-SP through Aetrix?

Please submit a Request for Quotation (RFQ) for MLX81120KLW-AAD-999-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 MLX81120KLW-AAD-999-SP reliable?

The price and inventory of MLX81120KLW-AAD-999-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX81120KLW-AAD-999-SP is usually 5 days.

3.What payment methods are accepted for MLX81120KLW-AAD-999-SP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX81120KLW-AAD-999-SP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MLX81120KLW-AAD-999-SP?

MLX81120KLW-AAD-999-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MLX81120KLW-AAD-999-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 MLX81120KLW-AAD-999-SP?

For technical support, including MLX81120KLW-AAD-999-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX81120KLW-AAD-999-SP requirements.

6.How does Aetrix verify that MLX81120KLW-AAD-999-SP is sourced from the original manufacturer or authorized distributors?

All MLX81120KLW-AAD-999-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 MLX81120KLW-AAD-999-SP meets industry standards.

7.What is the process for return or replacement of MLX81120KLW-AAD-999-SP?

All MLX81120KLW-AAD-999-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX81120KLW-AAD-999-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 MLX81120KLW-AAD-999-SP part is unused and in its original packaging.

Return procedure for MLX81120KLW-AAD-999-SP:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …