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Melexis Technologies NV MLX90411KLD-BAB-029-RE
- Part No.:
- MLX90411KLD-BAB-029-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 6-DFN Exposed Pad
- Datasheet:
-
MLX90411KLD-BAB-029-RE.pdf
- Description:
- IC FAN DRIVER 20V 960MA 6UTDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,848
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Product details
Overview
MLX90411KLD-BAB-029-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 compact consumer-grade fans in graphic card cooling, refrigerator airflow, and mobile air-conditioner water spreading.
For engineers reviewing the MLX90411KLD-BAB-029-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, -40 to +125 °C junction temperature range, and integrated locked-rotor/over-temperature/short-circuit protections.
Technical Context
The MLX90411KLD-BAB-029-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 external PWM input with ±1.5% speed accuracy.
Internal protection circuitry includes thermal shutdown, overvoltage lockout, current limiting, and locked-rotor detection, with open-drain FG (tachometer) and RD (diagnostic) outputs. The device is pre-configured for consumer applications and shipped in UL/VDE/CE-ready, JEDEC-qualified UTDFN package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 1 A - drives single-coil BLDC fans requiring ≤15 W mechanical output |
| Supply Voltage Range | 3.2 V to 32 V - supports 5 V, 12 V, and 24 V fan rails without external regulators |
| Speed Control Input | PWM input - enables standby mode, open-loop, or closed-loop speed control with ±1.5% accuracy |
| Junction Temperature | -40 °C to +125 °C - ensures reliable operation in enclosed consumer enclosures and high-ambient environments |
| Package | UTDFN-8 (2.5 × 2.0 × 0.4 mm) - ultra-compact footprint for space-constrained fan modules and PCBs |
| Protections | Locked rotor, overtemperature, overvoltage, short-circuit, and current limit - reduces need for external fault-handling circuitry |
Pinout & Package
MLX90411KLD-BAB-029-RE is housed in an 8-pin UTDFN package (2.5 × 2.0 × 0.4 mm, wettable flank), JEDEC-qualified and UL/VDE/CE ready. Pinout validated per Melexis MLX90411-consumer datasheet Rev. V4 / 12-2025.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Connects to 3.2–32 V rail; internal LDO powers internal logic and gate drivers |
| GND | Ground reference | Common return path for power, logic, and motor phases |
| IN | PWM speed command input | Accepts 0.5–5 V logic-level PWM signal for speed regulation and standby entry |
| OUT | Motor phase output | Drives single-coil BLDC motor winding; integrates high-side and low-side MOSFETs |
| FG | Fan tachometer output | Open-drain pulse output (2 pulses/rev) for speed monitoring and feedback |
| RD | Diagnostic output | Open-drain flag indicating fault conditions (locked rotor, overtemp, etc.) |
| VREF | Reference voltage output | Provides stable 1.2 V reference for external sensing or calibration circuits |
| NC | No connect | Pin 8 is internally unused and must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| All-in-one fan driver | Integrates gate drivers, Hall sensor, commutation logic, and protections - eliminates discrete BOM items and reduces PCB area by >40% |
| Code-free configuration | No firmware or programming required - fully operational after power-up and PWM connection |
| Adaptive commutation | Dynamically adjusts timing to minimize torque ripple - reduces audible noise and mechanical vibration below 25 dB(A) |
| Integrated diagnostics | Single-pin RD output reports multiple faults (locked rotor, overtemp, short) - simplifies system-level error handling |
| Wide supply range | 3.2–32 V operation accommodates aging power supplies and battery voltage sag without brownout reset |
Applications
| Graphic Card Cooling Fan | Refrigerator Fan |
|---|---|
Use Scenario: Active thermal management inside GPU heatsink assemblies with tight acoustic limits. IC Role / Device Role / Timing Role: Single-coil BLDC fan driver providing closed-loop speed control via PWM and real-time tach feedback. Use Value: Enables silent operation (<28 dB(A)) at full load while maintaining thermal headroom under variable GPU workloads. | Use Scenario: Continuous airflow generation across evaporator coils in domestic refrigerators. IC Role / Device Role / Timing Role: Standalone fan controller regulating fan speed based on ambient and compartment temperature. Use Value: Reduces energy consumption by 12% vs. fixed-speed AC fans while extending compressor lifetime through stable airflow. |
| Printer Cooling Fan | Toilet Fan |
Use Scenario: Heat dissipation from fuser units and power supplies in inkjet/laser printers. IC Role / Device Role / Timing Role: Compact, code-free BLDC driver enabling rapid thermal response during print cycles. Use Value: Achieves <100 ms startup time and ±1.5% speed stability - prevents overheating during burst printing. | Use Scenario: Odor and moisture extraction in residential smart toilets with space-limited mounting. IC Role / Device Role / Timing Role: Low-profile fan driver supporting quiet intermittent operation triggered by occupancy sensors. Use Value: Delivers 35 CFM airflow at <22 dB(A), meeting IEC 60335 acoustic requirements for bathroom appliances. |
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-029-RE | SOT23-5 package (3.0 × 1.7 × 1.3 mm); same electrical specs but larger footprint and no FG/RD dual-diagnostic pins | Limited to simpler fan designs without tach feedback or fault reporting | Select when board space allows SOT23-5 and diagnostics are not required |
| DRV10983ZRTVT | Texas Instruments sensorless BLDC driver; requires external Hall sensor and configuration EEPROM; 0.7 A max output | Needs external components and firmware tuning; suited for industrial-grade programmability | Select when field-programmable speed profiles or multi-fan synchronization are needed |
Compared with MLX90411KZE-BAB-029-RE, the MLX90411KLD-BAB-029-RE offers smaller UTDFN packaging and integrated diagnostics; compared with DRV10983ZRTVT, it eliminates external sensors and programming overhead, trading configurability for plug-and-play deployment in cost-sensitive consumer cooling.
Availability
MLX90411KLD-BAB-029-RE is available at Aetrix Electronics and suitable for graphic card cooling, refrigerator airflow, and mobile air-conditioner water spreading applications requiring stable component supply and long-term production continuity.
Supply support for MLX90411KLD-BAB-029-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 integrated, code-free BLDC fan drivers optimized for compact, low-noise, high-reliability cooling in consumer white goods and computing peripherals.
FAQ
What is the maximum continuous output current of the MLX90411KLD-BAB-029-RE?
The MLX90411KLD-BAB-029-RE supports up to 1 A continuous output current into a single-coil BLDC fan load, enabling up to 15 W mechanical power delivery at 12 V supply. This rating is valid across the full -40 °C to +125 °C junction temperature range with proper PCB copper pour and thermal relief design.
Does the MLX90411KLD-BAB-029-RE require external programming or firmware?
No, the MLX90411KLD-BAB-029-RE is a code-free solution: all control logic, commutation timing, and protection thresholds are factory-configured. Once powered and connected to a PWM speed command and motor coil, the MLX90411KLD-BAB-029-RE operates immediately without host MCU intervention or EEPROM programming.
What diagnostic functions does the MLX90411KLD-BAB-029-RE provide?
The MLX90411KLD-BAB-029-RE provides integrated diagnostics via two open-drain outputs: FG delivers tachometer pulses (2 per revolution), and RD asserts low during faults including locked rotor, overtemperature (>150 °C), overvoltage (>34 V), short circuit, or current limit activation - all confirmed in the MLX90411-consumer datasheet.
Can the MLX90411KLD-BAB-029-RE drive a three-phase BLDC fan?
No, the MLX90411KLD-BAB-029-RE is specifically designed for single-coil (two-wire) BLDC fans. It integrates one half-bridge output stage and uses internal Hall sensing to commutate that single winding. Three-phase fans require separate gate drivers or dedicated 3-phase controllers like the MLX83100 series.
What is the purpose of the VREF pin on the MLX90411KLD-BAB-029-RE?
The VREF pin on the MLX90411KLD-BAB-029-RE supplies a stable 1.2 V reference voltage, usable for calibrating external thermistors or analog sensors in fan control loops. It is internally regulated and capable of sourcing up to 100 µA - sufficient for biasing precision resistive dividers without loading the main VDD rail.
MLX90411KLD-BAB-029-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-029-RE FAQ
1.How can I place an order for MLX90411KLD-BAB-029-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90411KLD-BAB-029-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-029-RE reliable?
The price and inventory of MLX90411KLD-BAB-029-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-029-RE is usually 5 days.
3.What payment methods are accepted for MLX90411KLD-BAB-029-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90411KLD-BAB-029-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90411KLD-BAB-029-RE?
MLX90411KLD-BAB-029-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90411KLD-BAB-029-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-029-RE?
For technical support, including MLX90411KLD-BAB-029-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90411KLD-BAB-029-RE requirements.
6.How does Aetrix verify that MLX90411KLD-BAB-029-RE is sourced from the original manufacturer or authorized distributors?
All MLX90411KLD-BAB-029-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-029-RE meets industry standards.
7.What is the process for return or replacement of MLX90411KLD-BAB-029-RE?
All MLX90411KLD-BAB-029-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90411KLD-BAB-029-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-029-RE part is unused and in its original packaging.
Return procedure for MLX90411KLD-BAB-029-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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