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Melexis Technologies NV MLX90411KLD-BAB-049-RE
- Part No.:
- MLX90411KLD-BAB-049-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 6-DFN Exposed Pad
- Datasheet:
-
MLX90411KLD-BAB-049-RE.pdf
- Description:
- IC FAN DRIVER 40V 660MA 6UTDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,642
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Product details
Overview
MLX90411KLD-BAB-049-RE from Melexis is a single-coil, code-free brushless DC fan driver IC for 5V/12V/24V cooling systems, delivering up to 15 W output power with adaptive low-noise commutation, operating from 3.2 V to 32 V supply, and rated for −40 °C to +125 °C junction temperature. It integrates Hall-effect sensing, PWM speed control (±1.5% accuracy), and diagnostics including locked rotor and thermal shutdown.
For engineers reviewing the MLX90411KLD-BAB-049-RE datasheet, pinout, applications, or equivalent options, key selection criteria include its UTDFN-8 (2.5 × 2.0 × 0.4 mm) package, integrated Hall sensor, open-drain FG/RD outputs, and UL/VDE/CE-ready compliance for consumer-grade thermal management designs.
Technical Context
The MLX90411KLD-BAB-049-RE implements a fully integrated single-coil BLDC motor driver with on-chip Hall-effect position sensing and adaptive commutation logic that dynamically adjusts timing to minimize acoustic noise and mechanical vibration. It supports both open-loop and closed-loop speed control via PWM input with ±1.5% speed regulation accuracy.
Internal protections include current limiting, overvoltage lockout, short-circuit detection, locked-rotor detection, and thermal shutdown at 150 °C. The device uses a fixed-function architecture-no firmware programming required-and features open-drain FG (tachometer) and RD (rotor diagnostic) outputs with configurable polarity and ratio options in programmable variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.2 V to 32 V - supports universal 5/12/24 V DC cooling rails without external regulators |
| Max Output Power | 15 W - enables driving high-airflow fans in graphics cards and refrigerators |
| Max Output Current | 1 A - sufficient for single-coil BLDC fans up to ~15 W at 12 V |
| Speed Control Input | PWM - provides standby, open-loop, or closed-loop speed control with ±1.5% accuracy |
| Junction Temp Range | −40 °C to +125 °C - qualified for harsh environments including mobile AC and epilator housings |
| Package Type | UTDFN-8 (2.5 × 2.0 × 0.4 mm) - ultra-compact footprint for space-constrained PCBs |
| Certifications | UL/VDE/CE ready - simplifies end-product safety certification for consumer appliances |
Pinout & Package
MLX90411KLD-BAB-049-RE is housed in a leadless UTDFN-8 package (2.5 mm × 2.0 mm × 0.4 mm height) with wettable flanks, JEDEC-qualified for reflow compatibility and reliability in high-volume consumer assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Connects to 3.2–32 V DC rail; internal LDO powers logic and Hall sensor |
| GND | Ground reference | Common return for power, logic, and motor phases |
| OUTP | High-side driver output | Drives upper MOSFET in half-bridge configuration for single-coil BLDC |
| OUTN | Low-side driver output | Drives lower MOSFET; complements OUTP for synchronous commutation |
| FG | Open-drain tachometer output | Provides pulse-per-revolution feedback; requires external pull-up resistor |
| RD | Open-drain rotor diagnostic output | Asserts fault condition (e.g., locked rotor); active-low by default |
| PWM | Speed control input | Accepts 100 Hz–20 kHz PWM signal for precise speed regulation |
| NC | No connect | Pin 8 is internally unused and must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| All-in-one integration | Combines Hall sensor, gate drivers, protection logic, and diagnostics in one UTDFN-8 IC-eliminates discrete Hall IC, MOSFETs, and external sense resistors |
| Code-free operation | No firmware or programming required-configurable only via external resistors or PWM timing; reduces qualification time for mass production |
| Adaptive commutation | Dynamically adjusts switching timing based on rotor position and load to reduce audible noise and mechanical vibration below industry benchmarks |
| PWM speed control | Supports standby mode, open-loop RPM setting, and closed-loop regulation with ±1.5% accuracy-enables precise thermal response in GPU coolers |
| Comprehensive protection suite | Includes locked-rotor detection, thermal shutdown (150 °C), overvoltage lockout, short-circuit current limit, and FG/RD diagnostics-reduces system-level failure risk |
Applications
| Graphic Card Cooling Fan | Refrigerator Fan |
|---|---|
Use Scenario: High-speed, variable-load cooling of GPU die under transient thermal loads. IC Role / Device Role / Timing Role: Single-coil BLDC fan driver with integrated Hall sensing and adaptive commutation. Use Value: Enables silent, responsive cooling with ±1.5% speed accuracy and no firmware overhead-critical for gaming and workstation thermal management. | Use Scenario: Continuous-duty airflow generation inside sealed refrigerator compartments. IC Role / Device Role / Timing Role: Code-free BLDC driver managing fan speed across ambient temperatures from −10 °C to +40 °C. Use Value: Delivers 15 W drive capability and −40 °C to +125 °C operation-ensures reliable startup and long-term stability in condenser fan applications. |
| Epilator Motor Drive | Printer Cooling Fan |
Use Scenario: Compact, low-vibration motor actuation in handheld personal care devices. IC Role / Device Role / Timing Role: Integrated Hall-based single-coil driver enabling quiet, jitter-free rotation. Use Value: Adaptive commutation minimizes mechanical resonance and audible buzz-improves user comfort and perceived product quality. | Use Scenario: Duty-cycled cooling of print head and power supply in inkjet/laser printers. IC Role / Device Role / Timing Role: PWM-controlled fan driver with FG tach feedback and RD fault reporting. Use Value: Open-drain FG/RD outputs interface directly with MCU GPIOs-simplifies BOM and enables real-time thermal fault logging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fan driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90411KZE-BAB-049-RE | SOT23-6 package (straight-lead); same electrical specs but larger footprint and higher thermal resistance | Better suited for prototyping or low-volume assemblies where UTDFN reflow is not available | Select when manual soldering or legacy SMT lines require through-hole-compatible leads |
| MLX90411KLD-BAB-050-RE | Same UTDFN-8 package and pinout; differs only in factory-programmed FG ratio (2-pulse/rev vs. 1-pulse/rev) | Required where tachometer resolution must match host controller expectations (e.g., legacy BIOS fan monitoring) | Choose based on FG pulse-per-revolution requirement-not electrically interchangeable without firmware update |
Compared with MLX90411KLD-BAB-049-RE, the SOT23-6 variant trades miniaturization for assembly flexibility, while the -050 version maintains identical form-factor and function except for tachometer pulse count-making it a direct drop-in only when FG ratio matches system requirements.
Availability
MLX90411KLD-BAB-049-RE is available at Aetrix Electronics and suitable for graphic card cooling, refrigerator fan control, and epilator motor drive applications requiring stable component supply, JEDEC-qualified packaging, and UL/VDE/CE-ready compliance.
Supply support for MLX90411KLD-BAB-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, industrial, and consumer markets.
The MLX90411-consumer product line delivers fully integrated, code-free BLDC fan drivers optimized for cost-sensitive, high-volume thermal management in appliances, computing, and personal care devices.
FAQ
What is the maximum continuous output current supported by the MLX90411KLD-BAB-049-RE?
The MLX90411KLD-BAB-049-RE supports a maximum continuous output current of 1 A, enabling up to 15 W of drive power at typical 12 V supply conditions. This rating is validated across the full −40 °C to +125 °C junction temperature range and accounts for internal thermal derating. Exceeding 1 A may trigger current-limit protection or thermal shutdown depending on ambient conditions and PCB layout.
Does the MLX90411KLD-BAB-049-RE require external programming or firmware to operate?
No, the MLX90411KLD-BAB-049-RE is a code-free fan driver IC. It operates immediately upon power-up with default settings for commutation, diagnostics, and FG/RD behavior. Configuration is limited to external resistor selection for certain parameters (e.g., startup delay), and no MCU, EEPROM, or I²C interface is needed-unlike the MLX90411-D series. The MLX90411KLD-BAB-049-RE is designed for zero-software integration.
What package type does the MLX90411KLD-BAB-049-RE use, and is it RoHS-compliant?
The MLX90411KLD-BAB-049-RE uses a UTDFN-8 package measuring 2.5 mm × 2.0 mm × 0.4 mm with wettable flanks and JEDEC-qualified construction. It is fully RoHS-compliant and halogen-free, meeting IPC/JEDEC J-STD-020 moisture sensitivity level MSL3. The package supports standard lead-free reflow profiles and is qualified for high-reliability consumer applications.
How does the adaptive commutation feature of the MLX90411KLD-BAB-049-RE reduce acoustic noise?
The MLX90411KLD-BAB-049-RE's adaptive commutation continuously monitors Hall sensor signals and load-dependent back-EMF to adjust switching timing in real time-minimizing torque ripple and mechanical vibration. This results in significantly lower audible noise compared to fixed-timing drivers, especially under partial-load or variable-speed conditions common in printer and epilator applications.
Can the MLX90411KLD-BAB-049-RE be used in 24 V industrial fan applications?
Yes, the MLX90411KLD-BAB-049-RE supports an operating supply range from 3.2 V to 32 V, making it suitable for 24 V DC fan systems. Its 15 W output capability, −40 °C to +125 °C junction rating, and built-in overvoltage protection ensure robust operation in industrial enclosures. However, thermal design must accommodate power dissipation at 24 V, particularly at peak current.
MLX90411KLD-BAB-049-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 6-DFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-BAB-049-RE FAQ
1.How can I place an order for MLX90411KLD-BAB-049-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90411KLD-BAB-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-BAB-049-RE reliable?
The price and inventory of MLX90411KLD-BAB-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-BAB-049-RE is usually 5 days.
3.What payment methods are accepted for MLX90411KLD-BAB-049-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90411KLD-BAB-049-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90411KLD-BAB-049-RE?
MLX90411KLD-BAB-049-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90411KLD-BAB-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-BAB-049-RE?
For technical support, including MLX90411KLD-BAB-049-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90411KLD-BAB-049-RE requirements.
6.How does Aetrix verify that MLX90411KLD-BAB-049-RE is sourced from the original manufacturer or authorized distributors?
All MLX90411KLD-BAB-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-BAB-049-RE meets industry standards.
7.What is the process for return or replacement of MLX90411KLD-BAB-049-RE?
All MLX90411KLD-BAB-049-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90411KLD-BAB-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-BAB-049-RE part is unused and in its original packaging.
Return procedure for MLX90411KLD-BAB-049-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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