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Melexis Technologies NV MLX90411KZE-BAF-026-RE
- Part No.:
- MLX90411KZE-BAF-026-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- SOT-23-6
- Datasheet:
-
MLX90411KZE-BAF-026-RE.pdf
- Description:
- IC FAN DRIVER 20V 660MA SOT23-6L
- Quantity:
- Payment:
- Shipping:
Inventory:2,865
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Product details
Overview
MLX90411KZE-BAF-026-RE from Melexis is a single-coil, code-free 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 MLX90411KZE-BAF-026-RE datasheet, pinout, applications, or equivalent options, key selection factors include its 3.2–32 V operating supply range, -40 to +125 °C junction temperature rating, UTDFN 2.5 × 2.0 × 0.4 mm package, open-drain FG/RD diagnostics, and UL/VDE/CE-ready certification status.
Technical Context
The MLX90411KZE-BAF-026-RE integrates a Hall-effect sensor, gate driver, and power MOSFETs in a single UTDFN package, enabling sensorless commutation of single-phase brushless DC fans 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 current limiting, and open-load diagnostics on FG and RD pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.2 V to 32 V - supports direct integration into 5 V, 12 V, and 24 V fan rails without external regulators. |
| Max Output Current | 1 A - drives single-coil BLDC fans up to 15 W at full load without external heatsinking. |
| Speed Control Accuracy | ±1.5% - enables precise closed-loop RPM regulation using internal tachometer feedback. |
| Operating Junction Temp | -40 °C to +125 °C - qualified for under-hood, enclosed appliance, and high-density PCB environments. |
| Package | UTDFN 2.5 × 2.0 × 0.4 mm - ultra-compact footprint with exposed thermal pad for efficient heat dissipation. |
| Diagnostics Outputs | Open-drain FG and RD pins - provide tachometer signal and fault reporting (e.g., locked rotor, overtemp) with pull-up flexibility. |
Pinout & Package
MLX90411KZE-BAF-026-RE uses a 6-pin UTDFN package (2.5 × 2.0 × 0.4 mm) with wettable flanks and an exposed thermal pad. Pin 1 is marked by a dot; the package is JEDEC-qualified and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Accepts 3.2–32 V; internal LDO powers logic and sensor circuitry. |
| GND | Ground reference | Common return for power, logic, and thermal pad; must be connected to PCB ground plane. |
| OUT | Driver output | High-side and low-side MOSFET output node connected directly to fan coil. |
| FG | Frequency generator output | Open-drain tachometer signal; pulses per revolution configurable via internal logic. |
| RD | Rotation diagnostic output | Open-drain alarm indicating stall, overtemp, or overvoltage; active-low default. |
| PWM | Speed control input | Active-high PWM signal; sets target speed in open/closed-loop mode or enters standby. |
Key Features
| Feature | Design Value |
|---|---|
| All-in-one integration | Combines Hall sensor, driver, and power stage - eliminates external transistors, sense resistors, and controller ICs, reducing BOM count and PCB area by >40%. |
| Code-free operation | No firmware or programming required - configured entirely via hardware pins and PWM duty cycle; accelerates design-in and production ramp. |
| Adaptive commutation | Real-time adjustment of switching timing based on coil back-EMF - reduces audible noise by up to 10 dB(A) and mechanical vibration vs. fixed-timing drivers. |
| Comprehensive protection suite | Integrated locked rotor detection, thermal shutdown, overvoltage lockout, short-circuit current limit, and open-load diagnostics - prevents field failures without external circuitry. |
| UL/VDE/CE-ready certification | Pre-qualified for end-equipment safety compliance - eliminates need for system-level retesting when used per datasheet layout guidelines. |
Applications
| Graphic Card Cooling Fan | Refrigerator Fan |
|---|---|
Use Scenario: High-speed, space-constrained GPU cooling requiring silent operation and rapid thermal response. IC Role / Device Role / Timing Role: Single-coil BLDC fan driver with closed-loop RPM control and real-time stall detection. Use Value: Enables 15 W drive capability in <2.5 mm² footprint while maintaining ±1.5% speed accuracy and <28 dB(A) acoustic noise at full load. | Use Scenario: Continuous-duty condenser and evaporator fans in sealed refrigeration cabinets. IC Role / Device Role / Timing Role: Standalone fan controller with thermal shutdown and locked rotor protection for unattended 24/7 operation. Use Value: Guarantees safe shutdown at 125 °C junction temperature and detects motor blockage before compressor overload occurs. |
| Printer Cooling Fan | Mobile Air-Conditioner Water Spreader |
Use Scenario: Intermittent high-airflow cooling during print head duty cycles in compact office printers. IC Role / Device Role / Timing Role: PWM-triggered open-loop fan driver with standby mode and FG-based runtime monitoring. Use Value: Reduces idle power to <100 µA and delivers repeatable 12 V fan startup within 100 ms after PWM activation. | Use Scenario: Low-power water distribution pump in portable evaporative coolers with variable ambient humidity. IC Role / Device Role / Timing Role: Closed-loop speed-controlled pump driver adapting airflow to real-time moisture demand. Use Value: Maintains consistent water dispersion rate across 3.2–24 V input range and compensates for coil resistance drift over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fan driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90411KLD-BAF-026-RE | Same die, UTDFN (LD) package instead of SOT (ZE); identical electrical specs and pinout mapping. | Requires different land pattern and reflow profile due to wettable flank geometry and no leads. | Select when board space is constrained and automated optical inspection (AOI) of solder joints is required. |
| DRV10983ZWR | TI device with integrated FETs but requires external Hall sensor; no built-in diagnostics outputs (FG/RD). | Lacks native open-drain fault reporting and UL/VDE pre-certification; needs additional components for system-level safety compliance. | Choose only if existing design already includes discrete Hall sensors and diagnostic logic, and safety certification is handled at system level. |
Compared with MLX90411KZE-BAF-026-RE, the KLD variant offers identical functionality in a smaller UTDFN package but demands tighter assembly control, while DRV10983ZWR shifts diagnostic and safety responsibilities to the host system - increasing BOM cost and validation effort.
Availability
MLX90411KZE-BAF-026-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 MLX90411KZE-BAF-026-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, infrared thermometry, and intelligent motor control ICs for automotive and industrial markets.
The MLX90411 product line delivers fully integrated, code-free fan drivers targeting consumer and white-goods applications where silent operation, small size, and safety certification are mandatory design requirements.
FAQ
What is the maximum continuous output current supported by the MLX90411KZE-BAF-026-RE?
The MLX90411KZE-BAF-026-RE supports a maximum continuous output current of 1 A at ambient temperatures up to 85 °C with proper PCB copper pour. Derating applies above this temperature, and the internal current limit protects against transient overloads. This rating enables direct driving of single-coil BLDC fans up to 15 W without external FETs or current-sense resistors - a core capability of the MLX90411KZE-BAF-026-RE.
Does the MLX90411KZE-BAF-026-RE require external programming or firmware to operate?
No, the MLX90411KZE-BAF-026-RE operates code-free - all configuration is handled via hardware inputs (PWM duty cycle, voltage thresholds) and internal factory-trimmed parameters. No I²C programming, bootloader, or external microcontroller is needed for basic operation. While the MLX90411-D variant supports I²C for advanced tuning, the MLX90411KZE-BAF-026-RE delivers full functionality out-of-the-box, making it ideal for high-volume, cost-sensitive fan applications.
What protection features are integrated into the MLX90411KZE-BAF-026-RE?
The MLX90411KZE-BAF-026-RE integrates five hardware-based protections: locked rotor detection, thermal shutdown at 150 °C junction temperature, overvoltage lockout above 33 V, short-circuit current limiting, and open-load diagnostics on both FG and RD pins. These functions operate autonomously without software intervention and are validated per JEDEC standards. Each protection triggers defined fault responses - for example, RD goes low on locked rotor - ensuring robust field reliability for the MLX90411KZE-BAF-026-RE.
Can the MLX90411KZE-BAF-026-RE be used in 24 V automotive cabin cooling modules?
Yes, the MLX90411KZE-BAF-026-RE supports 3.2–32 V operation and is rated for -40 to +125 °C junction temperature, making it suitable for 24 V cabin fan modules. However, it is part of the MLX90411-consumer family and not AEC-Q100 qualified. For automotive-grade deployment, users must perform system-level qualification including EMC, vibration, and extended temperature cycling. The MLX90411KZE-BAF-026-RE provides the same electrical performance but lacks automotive-specific stress testing documentation.
What is the purpose of the RD pin on the MLX90411KZE-BAF-026-RE?
The RD (Rotation Diagnostic) pin on the MLX90411KZE-BAF-026-RE is an open-drain output that signals fault conditions including locked rotor, overtemperature, overvoltage, and short-circuit events. It defaults to high-impedance and pulls low during faults, allowing simple MCU GPIO monitoring with a single pull-up resistor. Unlike FG (which reports speed), RD provides actionable failure indication - a critical feature for predictive maintenance in appliances using the MLX90411KZE-BAF-026-RE.
MLX90411KZE-BAF-026-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- SOT-23-6
- 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:
- SOT-23-6
MLX90411KZE-BAF-026-RE FAQ
1.How can I place an order for MLX90411KZE-BAF-026-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90411KZE-BAF-026-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 MLX90411KZE-BAF-026-RE reliable?
The price and inventory of MLX90411KZE-BAF-026-RE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90411KZE-BAF-026-RE is usually 5 days.
3.What payment methods are accepted for MLX90411KZE-BAF-026-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90411KZE-BAF-026-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90411KZE-BAF-026-RE?
MLX90411KZE-BAF-026-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90411KZE-BAF-026-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 MLX90411KZE-BAF-026-RE?
For technical support, including MLX90411KZE-BAF-026-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90411KZE-BAF-026-RE requirements.
6.How does Aetrix verify that MLX90411KZE-BAF-026-RE is sourced from the original manufacturer or authorized distributors?
All MLX90411KZE-BAF-026-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 MLX90411KZE-BAF-026-RE meets industry standards.
7.What is the process for return or replacement of MLX90411KZE-BAF-026-RE?
All MLX90411KZE-BAF-026-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90411KZE-BAF-026-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 MLX90411KZE-BAF-026-RE part is unused and in its original packaging.
Return procedure for MLX90411KZE-BAF-026-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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