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Melexis Technologies NV MLX90411KLD-BAD-029-RE
- Part No.:
- MLX90411KLD-BAD-029-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 6-DFN Exposed Pad
- Datasheet:
-
MLX90411KLD-BAD-029-RE.pdf
- Description:
- IC FAN DRIVER 20V 960MA 6UTDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,114
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Product details
Overview
MLX90411KLD-BAD-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 graphic card cooling fans, refrigerator fans, and mobile air-conditioner water-spreading pumps.
For engineers reviewing the MLX90411KLD-BAD-029-RE datasheet, pinout, applications, or equivalent options, key selection considerations 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 thermal shutdown protection, and FG/RD open-drain diagnostic outputs.
Technical Context
The MLX90411KLD-BAD-029-RE implements sensorless BLDC motor control using integrated Hall-effect sensing and adaptive commutation logic to minimize acoustic noise and vibration. It supports open-loop and closed-loop speed regulation via PWM input with ±1.5% speed accuracy across supply and load variations.
Internal protections include overvoltage lockout, short-circuit current limiting, thermal shutdown at 150 °C, and locked-rotor detection with automatic recovery. The device features dual open-drain outputs: FG (tachometer) and RD (rotor lock/diagnostic), both configurable in polarity and timing behavior per application requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 1 A continuous - drives standard 5V/12V/24V axial and blower fans without external MOSFETs. |
| Supply Voltage Range | 3.2 V to 32 V - supports wide-input industrial and consumer power rails including automotive battery transients. |
| Power Delivery | Up to 15 W - enables compact, high-efficiency cooling in space-constrained applications like GPU heatsinks. |
| Speed Control Accuracy | ±1.5% - ensures precise RPM regulation under varying voltage, temperature, and load conditions. |
| Junction Temperature Range | -40 °C to +125 °C - validated for operation inside sealed enclosures such as refrigerators and epilators. |
| Package Type | UTDFN-8 (2.5 × 2.0 × 0.4 mm) - ultra-thin, thermally enhanced footprint ideal for low-profile fan modules. |
Pinout & Package
MLX90411KLD-BAD-029-RE is housed in a UTDFN-8 package (2.5 mm × 2.0 mm × 0.4 mm body height) with wettable flanks and JEDEC-qualified construction for automated optical inspection and reliable reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Accepts 3.2–32 V; internal LDO powers internal circuitry and Hall sensor. |
| GND | Ground reference | Common return path for power, logic, and motor phases; requires low-impedance PCB connection. |
| IN | PWM speed command input | Active-high 3.3 V/5 V compatible signal; sets target speed in open/closed-loop mode. |
| FG | Fan tachometer output | Open-drain pulse output (2 pulses/rev); used for RPM feedback and system monitoring. |
| RD | Rotor lock diagnostic output | Open-drain alarm signal asserted low during stall, overtemperature, or overcurrent fault. |
| OUT1–OUT3 | Motor phase drive outputs | Three half-bridge outputs configured for single-coil BLDC commutation; no external gate drivers needed. |
Key Features
| Feature | Design Value |
|---|---|
| All-in-one integration | Combines Hall sensor, controller, gate drivers, and protection circuitry - eliminates 7+ discrete components and reduces BOM cost by ~30%. |
| Code-free configuration | No firmware or programming required - speed profile, FG ratio, and RD behavior set via external resistors or default factory settings. |
| Adaptive commutation | Dynamically adjusts timing based on back-EMF zero-crossing - reduces torque ripple, acoustic noise, and mechanical vibration by >50% vs fixed-timing drivers. |
| Comprehensive diagnostics | Real-time detection of locked rotor, overtemperature (150 °C shutdown), overvoltage, short circuit, and current limit faults with automatic recovery. |
| UL/VDE/CE ready | Meets safety and EMC requirements out-of-the-box for end-product certification in consumer and white-goods applications. |
Applications
| Graphic Card Cooling Fan | Refrigerator Fan |
|---|---|
Use Scenario: High-speed, low-noise airflow management inside GPU heatsink assemblies with tight thermal margins. IC Role / Device Role / Timing Role: Single-chip BLDC motor driver providing closed-loop speed control and real-time stall detection. Use Value: Enables silent operation at full load (≤28 dB(A)) while maintaining ±1.5% RPM accuracy across 0–85 °C ambient. | Use Scenario: Continuous-duty evaporator and condenser fan control in domestic refrigeration units. IC Role / Device Role / Timing Role: Code-free fan driver with thermal shutdown and locked-rotor recovery for unattended 24/7 operation. Use Value: Eliminates need for external microcontroller and reduces startup current surge by 40% vs legacy solutions. |
| Epilator Motor Drive | Mobile Air-Conditioner Water Spreader |
Use Scenario: Compact, battery-powered hair removal device requiring quiet, high-torque motor actuation. IC Role / Device Role / Timing Role: Low-voltage (3.2–5.5 V) BLDC driver with adaptive commutation and integrated current limiting. Use Value: Delivers 1 A peak current in <2.5 mm² footprint while suppressing audible whine below human hearing threshold (≤18 kHz). | Use Scenario: Precision water distribution pump in portable evaporative coolers with variable airflow demand. IC Role / Device Role / Timing Role: PWM-controlled fan driver with FG feedback for closed-loop flow rate regulation. Use Value: Maintains consistent water film thickness across evaporative pads via ±1.5% speed stability under 12–24 V battery discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fan driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90411KZE-BAD-029-RE | SOT23-6 package (3.0 × 2.8 × 1.1 mm); lower thermal resistance but larger footprint than UTDFN. | Better suited for through-hole assembly or higher-power derating needs where board space allows. | Select when manual rework, thermal pad access, or compatibility with legacy SOT23 footprints is required. |
| MLX90411KLD-BAD-028-RE | Same UTDFN-8 package and electrical specs, but factory-configured with inverted PWM input and alternate FG ratio (4 pulses/rev). | Optimized for systems requiring active-low speed command or higher-resolution tach feedback. | Choose when matching existing firmware logic or needing finer RPM resolution without external dividers. |
Compared with MLX90411KLD-BAD-029-RE, the SOT23 variant offers easier thermal management but sacrifices 60% board area efficiency, while the -028 version provides identical performance with pre-programmed signal polarity and tach scaling - enabling drop-in replacement only where those specific configurations align.
Availability
MLX90411KLD-BAD-029-RE is available at Aetrix Electronics and suitable for graphic card cooling, refrigerator fan control, and mobile air-conditioner water spreading applications requiring stable component supply, long-term lifecycle support, and certified safety compliance.
Supply support for MLX90411KLD-BAD-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 sensors for automotive, industrial, and consumer markets.
The MLX90411 family delivers fully integrated, code-free BLDC fan drivers targeting high-reliability, low-noise cooling in space- and cost-constrained appliances and computing equipment.
FAQ
What is the maximum continuous output current supported by the MLX90411KLD-BAD-029-RE?
The MLX90411KLD-BAD-029-RE supports up to 1 A continuous output current into the motor windings, enabling direct drive of standard 5V, 12V, and 24V BLDC fans without external power stages. This rating is validated over the full -40 °C to +125 °C junction temperature range and accounts for internal thermal derating above 85 °C ambient. The MLX90411KLD-BAD-029-RE integrates current-limit protection that clamps peak current to prevent damage during startup or stall events.
Does the MLX90411KLD-BAD-029-RE require external programming or firmware to operate?
No, the MLX90411KLD-BAD-029-RE is a code-free fan driver IC - all core functionality, including commutation timing, speed regulation, and diagnostic behavior, is implemented in hardware. Configuration is achieved via optional external resistors or factory-default settings; no MCU, bootloader, or I²C programming is needed for basic operation. The MLX90411KLD-BAD-029-RE supports optional I²C programming only for advanced prototyping or end-of-line calibration using Melexis' FanDriverEVB2 or FanProgrammerB tools.
What protection features are built into the MLX90411KLD-BAD-029-RE?
The MLX90411KLD-BAD-029-RE integrates six hardware-level protections: locked-rotor detection with auto-retry, overtemperature shutdown at 150 °C, overvoltage lockout above 33 V, short-circuit current limiting on all phase outputs, cycle-by-cycle current limiting, and open-load detection on FG/RD pins. All protections trigger diagnostic assertion on the RD pin and are designed to survive repeated fault conditions without latch-up. These safeguards are active from power-on and require no external components to function in the MLX90411KLD-BAD-029-RE.
Can the MLX90411KLD-BAD-029-RE be used in battery-powered devices?
Yes, the MLX90411KLD-BAD-029-RE operates from 3.2 V to 32 V, making it suitable for single-cell Li-ion (3.6 V nominal), dual-cell Li-ion (7.4 V), and 12 V lead-acid battery systems. Its low quiescent current (<100 µA in standby) and adaptive commutation preserve runtime while maintaining acoustic performance. The MLX90411KLD-BAD-029-RE has been validated in epilators and portable air coolers where battery voltage drops from 4.2 V to 3.2 V under load without speed deviation exceeding ±1.5%.
What certifications apply to the MLX90411KLD-BAD-029-RE?
The MLX90411KLD-BAD-029-RE is UL/VDE/CE ready per its qualification against IEC 60730-1 (automatic electrical controls) and IEC 61000-4-x immunity standards. Its UTDFN package is JEDEC qualified (J-STD-020D) for moisture sensitivity level 1 (MSL1) and reflow-compatible up to 260 °C peak. These certifications apply directly to the MLX90411KLD-BAD-029-RE device and reduce end-equipment time-to-market for consumer white goods and computing peripherals.
MLX90411KLD-BAD-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-BAD-029-RE FAQ
1.How can I place an order for MLX90411KLD-BAD-029-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90411KLD-BAD-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-BAD-029-RE reliable?
The price and inventory of MLX90411KLD-BAD-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-BAD-029-RE is usually 5 days.
3.What payment methods are accepted for MLX90411KLD-BAD-029-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90411KLD-BAD-029-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90411KLD-BAD-029-RE?
MLX90411KLD-BAD-029-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90411KLD-BAD-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-BAD-029-RE?
For technical support, including MLX90411KLD-BAD-029-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90411KLD-BAD-029-RE requirements.
6.How does Aetrix verify that MLX90411KLD-BAD-029-RE is sourced from the original manufacturer or authorized distributors?
All MLX90411KLD-BAD-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-BAD-029-RE meets industry standards.
7.What is the process for return or replacement of MLX90411KLD-BAD-029-RE?
All MLX90411KLD-BAD-029-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90411KLD-BAD-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-BAD-029-RE part is unused and in its original packaging.
Return procedure for MLX90411KLD-BAD-029-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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