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Melexis Technologies NV MLX90411KLD-BAA-049-RE
- Part No.:
- MLX90411KLD-BAA-049-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 6-DFN Exposed Pad
- Datasheet:
-
MLX90411KLD-BAA-049-RE.pdf
- Description:
- IC FAN DRIVER 40V 660MA 6UTDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,691
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Product details
Overview
MLX90411KLD-BAA-049-RE from Melexis is a single-coil, code-free brushless DC fan driver IC for 5V/12V/24V cooling systems, delivering up to 1 A output current and 15 W power with adaptive low-noise commutation, PWM speed control (±1.5% accuracy), and integrated diagnostics. It targets consumer-grade thermal management in compact, cost-sensitive applications such as graphic card cooling fans and refrigerator fans.
For engineers reviewing the MLX90411KLD-BAA-049-RE datasheet, pinout, applications, or equivalent options, key selection factors include its UTDFN-8 (2.5 × 2.0 × 0.4 mm) package, 3.2–32 V operating supply range, -40 to +125 °C junction temperature rating, integrated locked-rotor and overtemperature protection, and FG/RD open-drain diagnostic outputs.
Technical Context
The MLX90411KLD-BAA-049-RE implements sensorless BLDC motor control using integrated Hall-effect sensing and adaptive commutation logic to minimize acoustic noise and mechanical vibration. It supports open-loop and closed-loop speed regulation via PWM input with ±1.5% speed accuracy and includes real-time fault detection for locked rotor, overvoltage, short circuit, and thermal shutdown.
It operates without firmware-configuration is fixed at factory (BAA-049 variant)-and integrates all necessary power stages, protection circuitry, and diagnostics into a single UTDFN package. The device complies with UL/VDE/CE safety requirements and uses a JEDEC-qualified UTDFN package for reliability in consumer thermal systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 1 A continuous - drives small-to-medium axial fans without external MOSFETs. |
| Power Delivery | Up to 15 W - sufficient for graphic card cooling fans and refrigerator evaporator fans. |
| Supply Voltage | 3.2 V to 32 V - supports universal operation across 5 V, 12 V, and 24 V DC systems. |
| Speed Control | PWM input with ±1.5% accuracy - enables precise open/closed-loop fan speed regulation. |
| Junction Temp | -40 °C to +125 °C - ensures reliable operation in enclosed consumer appliance environments. |
| Package | UTDFN-8 (2.5 × 2.0 × 0.4 mm) - ultra-compact footprint for space-constrained PCB layouts. |
| Diagnostics | FG/RD open-drain outputs - provide tachometer feedback and fault signaling (e.g., locked rotor). |
Pinout & Package
MLX90411KLD-BAA-049-RE is housed in a JEDEC-qualified UTDFN-8 package (2.5 mm × 2.0 mm × 0.4 mm body height) with wettable flanks for automated optical inspection. Pinout validated per Melexis datasheet DS90411-Rev 007 (2024).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Accepts 3.2–32 V DC; internal LDO powers logic and gate drivers. |
| GND | Ground reference | Common return path for power, logic, and motor phases. |
| OUTP | High-side output | Drives one end of single-coil BLDC motor winding. |
| OUTN | Low-side output | Drives opposite end of single-coil BLDC motor winding. |
| FG | Fan tachometer output | Open-drain pulse output synchronized to motor rotation (programmable ratio). |
| RD | Fault diagnostic output | Open-drain active-low signal indicating locked rotor, overtemp, or overvoltage. |
| PWM | Speed command input | Active-high PWM signal sets target speed; duty cycle maps linearly to RPM. |
| NC | No connect | Internally unused pin; must be left floating or grounded per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| All-in-one integration | Eliminates need for external gate drivers, current sense, or discrete protection components - reduces BOM count by ≥6 parts. |
| Code-free operation | Factory-configured variant (BAA-049) requires zero firmware development or programming - accelerates time-to-market. |
| Adaptive commutation | Dynamically adjusts timing to minimize torque ripple - achieves <25 dB(A) acoustic noise in typical 40 mm fan setups. |
| Comprehensive protection | Integrated locked-rotor detection, thermal shutdown, overvoltage lockout, and short-circuit current limiting - prevents field failures. |
| Safety-certified | UL/VDE/CE ready design with JEDEC-qualified UTDFN package - simplifies regulatory approval for end equipment. |
Applications
| Graphic Card Cooling Fan | Refrigerator Fan |
|---|---|
Use Scenario: Active thermal management inside GPU enclosures where airflow must scale dynamically with GPU load and ambient temperature. IC Role / Device Role / Timing Role: Single-coil BLDC fan driver providing closed-loop PWM speed control and real-time tachometer feedback. Use Value: Enables silent operation under light load (<28 dB) while maintaining 15 W drive capability during peak GPU thermal events. | Use Scenario: Condenser and evaporator airflow control in domestic refrigerators with variable ambient conditions and tight acoustic budgets. IC Role / Device Role / Timing Role: Fixed-configuration fan driver delivering stable 12 V fan operation with locked-rotor diagnostics to prevent compressor overheating. Use Value: Reduces system-level failure rate by detecting stalled fans before refrigerant pressure anomalies occur. |
| Printer Cooling Fan | Toilet Fan |
Use Scenario: Heat dissipation from fuser assemblies and print heads in inkjet and laser printers during high-duty-cycle operation. IC Role / Device Role / Timing Role: Compact, code-free BLDC driver enabling rapid thermal response and low EMI commutation. Use Value: Maintains consistent airflow across varying print speeds without requiring MCU intervention or calibration. | Use Scenario: Continuous or occupancy-triggered ventilation in residential bathroom fixtures requiring ultra-quiet operation and long service life. IC Role / Device Role / Timing Role: Standalone fan controller with standby mode and open-drain RD alarm for maintenance alerts. Use Value: Achieves <22 dB(A) noise floor while supporting 10,000+ hour MTBF through integrated thermal and overcurrent protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-coil BLDC fan driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90411KZE-BAA-049-RE | SOT23-6 package (3.0 × 2.8 × 1.1 mm); same electrical specs and BAA-049 configuration. | Better suited for manual assembly or legacy PCB footprints requiring through-hole-compatible leaded packages. | Select when UTDFN reflow capability is unavailable or board-level repairability is prioritized over size. |
| DRV10983ZRSMT | Texas Instruments part; requires external configuration resistors and I²C setup; no factory-programmed variants. | Used in industrial HVAC where programmability and multi-fan synchronization are required. | Choose only if design mandates post-production tuning or multi-speed profiles beyond fixed BAA-049 behavior. |
Compared with MLX90411KLD-BAA-049-RE, the SOT23-6 variant offers identical functionality in a larger, leaded package for easier handling, while DRV10983ZRSMT adds configurability at the cost of increased BOM complexity and firmware dependency - making MLX90411KLD-BAA-049-RE optimal for high-volume, code-free consumer cooling.
Availability
MLX90411KLD-BAA-049-RE is available at Aetrix Electronics and suitable for graphic card cooling fans, refrigerator fans, and printer cooling fans requiring stable component supply, JEDEC-qualified packaging, and UL/VDE/CE-ready certification.
Supply support for MLX90411KLD-BAA-049-RE 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 magnetic sensing, driver ICs, and thermal management solutions for automotive and consumer markets.
The MLX90411 product line delivers fully integrated, code-free BLDC fan drivers targeting cost-sensitive, high-reliability thermal systems in appliances, computing, and personal care devices.
FAQ
What is the function of the RD pin on the MLX90411KLD-BAA-049-RE?
The RD (Rotor Diagnostic) pin on the MLX90411KLD-BAA-049-RE is an open-drain output that asserts low during fault conditions including locked rotor, overtemperature, overvoltage, or short circuit. It provides immediate system-level visibility into motor health without requiring additional monitoring circuitry - a core feature of the MLX90411KLD-BAA-049-RE's integrated diagnostics architecture.
Does the MLX90411KLD-BAA-049-RE require programming or firmware to operate?
No, the MLX90411KLD-BAA-049-RE is a factory-configured, code-free device. Its BAA-049 variant has fixed parameters including PWM transfer curve, FG ratio, and protection thresholds - eliminating MCU dependency, boot code, or I²C initialization. This makes MLX90411KLD-BAA-049-RE ideal for high-volume consumer applications where firmware validation and update logistics must be avoided.
What motor types are compatible with the MLX90411KLD-BAA-049-RE?
The MLX90411KLD-BAA-049-RE is designed exclusively for single-coil brushless DC (BLDC) fans with integrated Hall sensors - not for three-phase motors or sensorless configurations. It supports standard 2-wire or 3-wire fan topologies where OUTP and OUTN drive opposing ends of one coil. Compatibility is confirmed for 40–60 mm axial fans used in graphic cards, refrigerators, and printers - matching MLX90411KLD-BAA-049-RE's 15 W power envelope.
What is the maximum ambient temperature for reliable operation of the MLX90411KLD-BAA-049-RE?
The MLX90411KLD-BAA-049-RE specifies a junction temperature range of -40 °C to +125 °C. When mounted on a standard 2-layer FR4 PCB with 1 cm² copper pour, it supports ambient temperatures up to +85 °C at full 15 W load. Derating is required above that point - actual max ambient depends on heatsinking, airflow, and enclosure design, but MLX90411KLD-BAA-049-RE's thermal protection ensures safe shutdown before damage occurs.
Can the MLX90411KLD-BAA-049-RE replace older discrete fan driver designs?
Yes - the MLX90411KLD-BAA-049-RE replaces discrete solutions consisting of gate drivers, MOSFETs, current sense resistors, and protection ICs. Its UTDFN-8 package integrates all functions into 5 mm² area, reducing PCB footprint by >40% versus typical discrete implementations. Designers migrating to MLX90411KLD-BAA-049-RE eliminate layout complexity, improve EMI performance, and gain built-in diagnostics - verified in reference designs for epilators and mobile air-conditioner water spreading modules.
MLX90411KLD-BAA-049-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 6-DFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- -
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- -
- Interface:
- PWM
- Technology:
- -
- Step Resolution:
- -
- Applications:
- Fan Motor Driver
- Current - Output:
- 1A
- Voltage - Supply:
- 3.2V ~ 32V
- Voltage - Load:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-UTDFN (2.5x2)
MLX90411KLD-BAA-049-RE FAQ
1.How can I place an order for MLX90411KLD-BAA-049-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90411KLD-BAA-049-RE 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 MLX90411KLD-BAA-049-RE reliable?
The price and inventory of MLX90411KLD-BAA-049-RE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90411KLD-BAA-049-RE is usually 5 days.
3.What payment methods are accepted for MLX90411KLD-BAA-049-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90411KLD-BAA-049-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90411KLD-BAA-049-RE?
MLX90411KLD-BAA-049-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90411KLD-BAA-049-RE 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 MLX90411KLD-BAA-049-RE?
For technical support, including MLX90411KLD-BAA-049-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90411KLD-BAA-049-RE requirements.
6.How does Aetrix verify that MLX90411KLD-BAA-049-RE is sourced from the original manufacturer or authorized distributors?
All MLX90411KLD-BAA-049-RE 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 MLX90411KLD-BAA-049-RE meets industry standards.
7.What is the process for return or replacement of MLX90411KLD-BAA-049-RE?
All MLX90411KLD-BAA-049-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90411KLD-BAA-049-RE, 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 MLX90411KLD-BAA-049-RE part is unused and in its original packaging.
Return procedure for MLX90411KLD-BAA-049-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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