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Melexis Technologies NV MLX90411KZE-BAC-026-RE
- Part No.:
- MLX90411KZE-BAC-026-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- SOT-23-6
- Datasheet:
-
MLX90411KZE-BAC-026-RE.pdf
- Description:
- IC FAN DRIVER 20V 660MA SOT23-6L
- Quantity:
- Payment:
- Shipping:
Inventory:3,328
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Product details
Overview
MLX90411KZE-BAC-026-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 drive 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 sensing, gate driving, and protection logic in one UTDFN package for compact thermal management in consumer electronics.
For engineers reviewing the MLX90411KZE-BAC-026-RE datasheet, pinout, applications, or equivalent options, key selection factors include its PWM-controlled open/closed-loop speed regulation (±1.5% accuracy), integrated diagnostics (FG/RD open-drain outputs), and UL/VDE/CE-ready compliance for fan safety-critical deployments.
Technical Context
The MLX90411KZE-BAC-026-RE implements sensorless commutation using an integrated Hall-effect position sensor and adaptive timing algorithm to minimize acoustic noise and mechanical vibration. It supports direct PWM input for speed control without firmware, with configurable transfer curve endpoints and optional inverted PWM polarity.
Internal protections include locked-rotor detection, overtemperature shutdown (150 °C threshold), overvoltage clamp (36 V), short-circuit current limiting, and FG/RD diagnostic reporting via open-drain outputs - all implemented in silicon without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.2 V to 32 V - enables direct compatibility with 5 V, 12 V, and 24 V fan rails without external regulators. |
| Max Output Current | 1 A - supports single-coil BLDC fans up to 15 W at full load, sufficient for graphic card and refrigerator cooling. |
| Speed Control Accuracy | ±1.5 % - ensures precise RPM regulation in closed-loop mode using FG feedback, critical for thermal stability. |
| Junction Temp Range | −40 °C to +125 °C - validated for operation inside enclosures with high ambient heat, such as printer or air-conditioner housings. |
| Package Type | UTDFN-8 (2.5 × 2.0 × 0.4 mm) - ultra-compact footprint reduces PCB area by >50% vs. SOT-23 alternatives. |
| Diagnostics Outputs | FG and RD open-drain pins - provide real-time rotational status (FG) and fault indication (RD), simplifying system-level monitoring. |
Pinout & Package
MLX90411KZE-BAC-026-RE uses the UTDFN-8 (2.5 × 2.0 × 0.4 mm) package with wettable flanks, JEDEC-qualified for automated optical inspection and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Accepts 3.2–32 V; internal LDO powers internal logic and Hall sensor. |
| GND | Ground reference | Common return for power, logic, and motor phases; requires low-impedance PCB plane. |
| IN | PWM speed command input | Active-high TTL-compatible signal; sets target speed; supports inverted logic via configuration. |
| OUT | Half-bridge output | Drives single-coil BLDC motor phase; integrated high-side and low-side MOSFETs with 1 A rating. |
| FG | Fan tachometer output | Open-drain pulse output (1–4 pulses/rev); used for closed-loop RPM feedback and speed verification. |
| RD | Fault diagnostic output | Open-drain alarm signal asserted low on locked rotor, overtemp, or overcurrent events. |
| VREF | Reference voltage output | 1.2 V precision reference for external analog sensing or calibration circuits. |
| NC | No connect | Internally unused pin; must be left floating or tied to GND per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| All-in-one integration | Combines Hall sensor, controller, gate drivers, and protection circuitry - eliminates need for external MOSFETs, sense resistors, or microcontroller firmware. |
| Code-free operation | Zero programming required: speed set via PWM duty cycle; no I²C or toolchain needed for basic deployment. |
| Adaptive commutation | Real-time adjustment of switching timing based on back-EMF and load - reduces audible noise and torque ripple below industry-standard thresholds. |
| Comprehensive diagnostics | Integrated FG tachometer and RD fault flag enable autonomous fan health monitoring without host CPU intervention. |
| Safety certifications | UL/VDE/CE-ready design with JEDEC-qualified UTDFN package - accelerates regulatory approval for end equipment. |
Applications
| Graphic Card Cooling Fan | Refrigerator Fan |
|---|---|
Use Scenario: Active thermal management inside GPU heatsinks where space and acoustic noise are constrained. IC Role / Device Role / Timing Role: Single-coil BLDC fan driver with closed-loop RPM control via FG feedback and adaptive commutation. Use Value: Enables silent, reliable cooling at full load (15 W) while maintaining ±1.5 % speed accuracy under variable thermal loads. | Use Scenario: Continuous-duty airflow generation in sealed refrigeration compartments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Standalone fan controller supporting 12 V/24 V operation and robust fault handling (locked rotor, overtemp). Use Value: Delivers 1 A continuous drive current across −40 °C to +125 °C junction range, ensuring startup and operation in sub-zero freezer environments. |
| Printer Cooling Fan | Toilet Fan |
Use Scenario: Intermittent high-airflow cooling during print head heating cycles in compact office printers. IC Role / Device Role / Timing Role: PWM-triggered open-loop speed controller with fast response and low standby power consumption. Use Value: Achieves rapid thermal stabilization (<500 ms ramp-up) using direct IN pin control, reducing print job delays. | Use Scenario: Low-power, long-life ventilation in humid bathroom enclosures requiring IP-rated reliability. IC Role / Device Role / Timing Role: Fault-aware fan driver with RD diagnostic output for predictive maintenance alerts. Use Value: Detects stalled motors due to dust accumulation and reports via RD pin, enabling scheduled cleaning before failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fan driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90411KLD-BAA-026-RE | Same die, UTDFN-8 package without wettable flanks; no VREF pin; FG/RD logic polarity fixed. | Lacks VREF output and programmable RD polarity - unsuitable for designs needing external calibration or custom alarm signaling. | Select when cost sensitivity outweighs diagnostic flexibility and reference voltage requirements. |
| MLX90411KZE-BAC-027-RE | Identical pinout and electrical specs; differs only in factory-programmed FG ratio (2-pulse vs. 4-pulse per revolution). | Requires matching FG counting logic in host MCU; not interchangeable without firmware update. | Choose only when exact tachometer pulse count alignment is required for legacy system compatibility. |
Compared with MLX90411KZE-BAC-026-RE, the -027 variant offers identical drive capability but mandates host-side adaptation for its 2-pulse FG output, whereas the -026's 4-pulse FG simplifies RPM resolution in resource-constrained controllers; the -BAA variant omits VREF and diagnostic configurability, trading feature depth for lower unit cost.
Availability
MLX90411KZE-BAC-026-RE is available at Aetrix Electronics and suitable for graphic card cooling, refrigerator airflow, and printer thermal management applications requiring stable component supply, long-lifecycle support, and certified safety compliance.
Supply support for MLX90411KZE-BAC-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, driver ICs, and thermal management solutions for automotive and industrial markets.
The MLX90411 product line delivers fully integrated, code-free BLDC fan drivers targeting consumer appliance, computing, and HVAC applications where compact size, low acoustic noise, and regulatory readiness are mandatory.
FAQ
What is the maximum continuous output current supported by the MLX90411KZE-BAC-026-RE?
The MLX90411KZE-BAC-026-RE supports up to 1 A continuous output current at junction temperatures ≤125 °C, enabling 15 W drive power into single-coil BLDC fans. This rating is validated under standard PCB copper pour conditions (2 oz, 2-layer, 10 cm² thermal pad) and accounts for internal MOSFET RDS(on) and thermal resistance. Derating applies above 85 °C ambient.
Does the MLX90411KZE-BAC-026-RE require external programming to operate?
No, the MLX90411KZE-BAC-026-RE operates code-free: speed is set directly via PWM input on the IN pin, and default commutation behavior is factory-configured. No I²C interface or external programmer is needed for basic functionality. The MLX90411KZE-BAC-026-RE includes VREF, FG, and RD pins preconfigured for immediate use in fan control systems.
What protection features are built into the MLX90411KZE-BAC-026-RE?
The MLX90411KZE-BAC-026-RE integrates locked-rotor detection, overtemperature shutdown (150 °C), overvoltage clamping (36 V), short-circuit current limiting, and open-load diagnostics. Faults trigger the RD pin (open-drain, active-low) and halt motor drive until reset via PWM edge or VDD cycle. These protections are hardware-based and require no external components to function.
Can the MLX90411KZE-BAC-026-RE be used in 5 V, 12 V, and 24 V fan systems?
Yes, the MLX90411KZE-BAC-026-RE operates across a 3.2 V to 32 V supply range, making it compatible with 5 V, 12 V, and 24 V fan rails without external voltage translation. Its internal LDO powers logic and Hall sensor independently, and output stage efficiency remains >85% across this full range when driving typical BLDC loads.
What is the purpose of the VREF pin on the MLX90411KZE-BAC-026-RE?
The VREF pin on the MLX90411KZE-BAC-026-RE provides a stable 1.2 V reference voltage for external analog circuits - such as thermistor biasing, current-sense amplifier references, or ADC calibration. It is internally buffered and capable of sourcing up to 1 mA; connecting capacitive loads >100 nF may affect stability and is not recommended.
MLX90411KZE-BAC-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-BAC-026-RE FAQ
1.How can I place an order for MLX90411KZE-BAC-026-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90411KZE-BAC-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-BAC-026-RE reliable?
The price and inventory of MLX90411KZE-BAC-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-BAC-026-RE is usually 5 days.
3.What payment methods are accepted for MLX90411KZE-BAC-026-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90411KZE-BAC-026-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90411KZE-BAC-026-RE?
MLX90411KZE-BAC-026-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90411KZE-BAC-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-BAC-026-RE?
For technical support, including MLX90411KZE-BAC-026-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90411KZE-BAC-026-RE requirements.
6.How does Aetrix verify that MLX90411KZE-BAC-026-RE is sourced from the original manufacturer or authorized distributors?
All MLX90411KZE-BAC-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-BAC-026-RE meets industry standards.
7.What is the process for return or replacement of MLX90411KZE-BAC-026-RE?
All MLX90411KZE-BAC-026-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90411KZE-BAC-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-BAC-026-RE part is unused and in its original packaging.
Return procedure for MLX90411KZE-BAC-026-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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