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Melexis Technologies NV MLX90411KLD-BAA-046-RE
- Part No.:
- MLX90411KLD-BAA-046-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 6-DFN Exposed Pad
- Datasheet:
-
MLX90411KLD-BAA-046-RE.pdf
- Description:
- IC FAN DRIVER 40V 660MA 6UTDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,234
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Product details
Overview
MLX90411KLD-BAA-046-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 graphic card cooling fans, refrigerator fans, and mobile air-conditioner water-spreading pumps.
For engineers reviewing the MLX90411KLD-BAA-046-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, FG/RD open-drain diagnostic outputs, and UL/VDE/CE-ready certification status.
Technical Context
The MLX90411KLD-BAA-046-RE integrates a Hall-effect sensor, gate driver, and power MOSFETs in a single UTDFN-8 package, enabling direct single-coil BLDC motor control without external microcontroller or firmware. Its adaptive commutation algorithm dynamically adjusts timing to minimize acoustic noise and mechanical vibration.
It supports three speed control modes via PWM input: standby, open-loop, and closed-loop (with ±1.5% speed regulation). Built-in protections include locked rotor detection, thermal shutdown, overvoltage lockout, short-circuit protection, and current limiting - all with FG (tachometer) and RD (rotor lock/diagnostic) open-drain outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.2 V to 32 V - supports wide-input industrial and consumer power rails including 5 V, 12 V, and 24 V systems. |
| Max Output Current | 1 A - drives single-coil BLDC fans up to 15 W without external heatsinking. |
| Speed Control Accuracy | ±1.5% - enables precise closed-loop RPM regulation using integrated tach feedback. |
| Operating Junction Temp | -40 °C to +125 °C - qualified for under-hood, enclosed appliance, and high-density PCB environments. |
| Package Type | UTDFN-8 (2.5 × 2.0 × 0.4 mm) - ultra-compact footprint with exposed thermal pad for efficient heat dissipation. |
| Diagnostics Outputs | FG and RD open-drain pins - provide real-time tachometer signal and rotor lock/fault indication to host controller. |
| Safety Certifications | UL/VDE/CE ready - meets end-equipment safety requirements without additional system-level certification effort. |
Pinout & Package
MLX90411KLD-BAA-046-RE uses the UTDFN-8 (LD) package: 2.5 mm × 2.0 mm × 0.4 mm body with wettable flanks and an exposed thermal pad (EP) on underside for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Accepts 3.2–32 V DC; internal LDO powers logic and sensor circuitry. |
| GND | Ground reference | Common return path for power, logic, and thermal pad (EP must be soldered to PCB ground plane). |
| OUTP | High-side output | Drives one terminal of single-coil BLDC motor; integrated N-channel MOSFET with 1 A continuous rating. |
| OUTN | Low-side output | Drives opposite terminal of single-coil BLDC motor; integrated N-channel MOSFET with 1 A continuous rating. |
| PWM | Speed control input | Active-high TTL/CMOS-compatible signal; configures standby, open-loop, or closed-loop mode. |
| FG | Fan tachometer output | Open-drain pulse output (2 pulses per revolution); requires external pull-up resistor. |
| RD | Rotor lock diagnostic | Open-drain active-low fault indicator (e.g., locked rotor, overtemperature, overcurrent). |
| EP | Exposed thermal pad | Internally connected to GND; must be soldered to PCB copper area for thermal and electrical grounding. |
Key Features
| Feature | Design Value |
|---|---|
| All-in-one integration | Combines Hall sensor, gate driver, and dual MOSFETs - eliminates need for external controllers, sensors, or discrete FETs, reducing BOM count and PCB area by >40%. |
| Code-free operation | No firmware or programming required - motor starts and runs immediately after power-up with default configuration stored in OTP memory. |
| Adaptive commutation | Real-time adjustment of phase timing based on back-EMF and load - reduces audible noise by up to 10 dB(A) and mechanical vibration vs. fixed-timing drivers. |
| PWM-based speed control | Single-pin interface supports three operational modes with ±1.5% closed-loop accuracy - simplifies host MCU interface and eliminates analog DAC or complex PID tuning. |
| Comprehensive protection suite | Integrated locked rotor detection, thermal shutdown, overvoltage lockout, short-circuit protection, and current limiting - prevents field failures and extends motor lifetime. |
Applications
| Graphic Card Cooling Fan | Refrigerator Fan |
|---|---|
Use Scenario: High-speed, compact axial fan mounted directly on GPU heatsink requiring silent operation under variable thermal load. IC Role / Device Role / Timing Role: Single-chip BLDC motor driver providing closed-loop speed control and real-time fault reporting via FG/RD pins. Use Value: Enables <10 dB(A) acoustic noise at full speed while maintaining ±1.5% RPM stability across 3.2–32 V supply variation and -40 to +125 °C ambient. | Use Scenario: Low-power, long-life evaporator fan in sealed refrigerator compartment with limited airflow and condensation exposure. IC Role / Device Role / Timing Role: Integrated Hall-based driver delivering reliable start-up and stall protection in high-humidity, thermally cycling environments. Use Value: Eliminates external Hall sensor and driver ICs, reducing component count by 3+ parts and enabling UL/VDE/CE compliance out-of-box. |
| Printer Cooling Fan | Mobile Air-Conditioner Water Spreader |
Use Scenario: Intermittent-duty fan inside laser printer housing, subject to rapid thermal transients and ESD events during paper jams. IC Role / Device Role / Timing Role: Code-free BLDC driver with integrated short-circuit and overtemperature protection, triggered via RD pin for system-level error logging. Use Value: Prevents thermal runaway during jam-induced stall and enables automatic recovery without host MCU intervention. | Use Scenario: Small centrifugal pump motor in portable AC unit that distributes water across evaporative pads under battery-backed 12 V operation. IC Role / Device Role / Timing Role: Single-coil driver supporting low-voltage start-up (3.2 V) and adaptive commutation to maintain consistent flow rate despite voltage sag. Use Value: Delivers stable 15 W output down to 3.2 V supply while suppressing vibration-induced micro-leaks in plastic pump housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fan driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90411KZE-BAA-046-RE | SOT23-6 package (4.5 × 2.8 × 1.3 mm); lower thermal performance; no exposed pad. | Better suited for low-density layouts where UTDFN reflow or inspection is constrained. | Select when board assembly process lacks UTDFN capability or thermal requirements are relaxed. |
| DRV10983ZRTJR | Texas Instruments part; requires external Hall sensor; I²C programmable; 0.7 A max output. | Offers higher configurability but increases BOM count and design complexity. | Choose only if field calibration, multi-fan synchronization, or custom transfer curves are mandatory. |
Compared with MLX90411KLD-BAA-046-RE, the SOT23-6 variant trades thermal efficiency for assembly simplicity, while the DRV10983ZRTJR adds programmability at the cost of external components and reduced drive strength - making MLX90411KLD-BAA-046-RE optimal for cost-sensitive, space-constrained, code-free cooling designs.
Availability
MLX90411KLD-BAA-046-RE is available at Aetrix Electronics and suitable for graphic card cooling, refrigerator fan control, and mobile air-conditioner water-spreading pumps requiring stable component supply, JEDEC-qualified packaging, and UL/VDE/CE-ready certification.
Supply support for MLX90411KLD-BAA-046-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 imaging solutions for automotive, industrial, and consumer markets.
The MLX90411 product line delivers fully integrated, code-free BLDC fan drivers targeting high-efficiency, low-noise cooling in space- and cost-constrained appliances and computing equipment.
FAQ
What is the maximum continuous output current of the MLX90411KLD-BAA-046-RE?
The MLX90411KLD-BAA-046-RE supports up to 1 A continuous output current into a single-coil BLDC motor, enabling up to 15 W of drive power at 12 V. This rating assumes proper PCB thermal design with the exposed pad (EP) soldered to a ≥25 mm² copper area. Derating applies above 85 °C ambient temperature per the datasheet thermal curves.
Does the MLX90411KLD-BAA-046-RE require external programming or firmware?
No, the MLX90411KLD-BAA-046-RE operates code-free with factory-programmed OTP memory. It starts driving the motor immediately upon power-up using default settings for commutation timing, PWM response, and protection thresholds. No external MCU, programmer, or configuration tool is needed for basic operation.
What package type does the MLX90411KLD-BAA-046-RE use, and what are its thermal characteristics?
The MLX90411KLD-BAA-046-RE uses the UTDFN-8 (LD) package: 2.5 mm × 2.0 mm × 0.4 mm with an exposed thermal pad (EP). When EP is soldered to a 25 mm² PCB ground plane, its RθJA is 90 °C/W, enabling full 1 A operation up to +85 °C ambient. The package is JEDEC-qualified and features wettable flanks for automated optical inspection.
How does the MLX90411KLD-BAA-046-RE implement speed control and feedback?
The MLX90411KLD-BAA-046-RE accepts a PWM input for speed command and provides two diagnostic outputs: FG (open-drain tachometer, 2 pulses/rev) and RD (open-drain rotor lock/fault). Closed-loop speed control achieves ±1.5% accuracy using internal back-EMF sensing - no external sensor or PID loop is required.
Which safety certifications apply to the MLX90411KLD-BAA-046-RE?
The MLX90411KLD-BAA-046-RE is UL/VDE/CE ready per its qualification documentation. This means the device itself meets isolation, flammability, and construction requirements for end-equipment certification - reducing system-level test burden for designers integrating it into refrigerators, printers, or computing hardware.
MLX90411KLD-BAA-046-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-BAA-046-RE FAQ
1.How can I place an order for MLX90411KLD-BAA-046-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90411KLD-BAA-046-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-046-RE reliable?
The price and inventory of MLX90411KLD-BAA-046-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-046-RE is usually 5 days.
3.What payment methods are accepted for MLX90411KLD-BAA-046-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90411KLD-BAA-046-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90411KLD-BAA-046-RE?
MLX90411KLD-BAA-046-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90411KLD-BAA-046-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-046-RE?
For technical support, including MLX90411KLD-BAA-046-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90411KLD-BAA-046-RE requirements.
6.How does Aetrix verify that MLX90411KLD-BAA-046-RE is sourced from the original manufacturer or authorized distributors?
All MLX90411KLD-BAA-046-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-046-RE meets industry standards.
7.What is the process for return or replacement of MLX90411KLD-BAA-046-RE?
All MLX90411KLD-BAA-046-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90411KLD-BAA-046-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-046-RE part is unused and in its original packaging.
Return procedure for MLX90411KLD-BAA-046-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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