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Melexis Technologies NV MLX90411KZE-BAC-046-RE
- Part No.:
- MLX90411KZE-BAC-046-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- SOT-23-6
- Datasheet:
-
MLX90411KZE-BAC-046-RE.pdf
- Description:
- IC FAN DRIVER 40V 660MA SOT23-6L
- Quantity:
- Payment:
- Shipping:
Inventory:3,180
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Product details
Overview
MLX90411KZE-BAC-046-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 drive power with adaptive low-noise commutation. It integrates Hall sensing, motor control logic, and protection circuitry in a SOT-23-6 (ZE) package, targeting graphic card cooling fans and refrigerator fans.
For engineers reviewing the MLX90411KZE-BAC-046-RE datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.2–32 V operating supply range, ±1.5% closed-loop speed accuracy, integrated locked-rotor and thermal shutdown protections, and UL/VDE/CE-ready certification status.
Technical Context
The MLX90411KZE-BAC-046-RE implements sensorless commutation using an integrated Hall-effect sensor array and proprietary adaptive timing algorithm to minimize acoustic noise and vibration. It supports PWM-based speed control with configurable transfer curves and open-drain FG/RD diagnostics.
Its internal architecture includes a fully integrated H-bridge driver stage, current-limiting circuitry, and real-time diagnostics for overvoltage, short-circuit, and temperature faults - all operating across -40°C to +125°C junction temperature range without external microcontroller intervention.
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 DC fan rails without external regulators. |
| Max Output Current | 1 A - supports driving single-phase brushless DC fans up to 15 W mechanical output power. |
| Speed Control Accuracy | ±1.5% - ensures stable rotational speed under varying load and temperature conditions in closed-loop mode. |
| Junction Temp Range | -40°C to +125°C - qualified for use in high-ambient environments such as enclosed graphics cards and refrigeration compartments. |
| Package Type | SOT-23-6 (ZE) - surface-mount, straight-lead package with 2.9 mm × 2.8 mm footprint and 1.45 mm height for compact PCB integration. |
| Diagnostic Outputs | Open-drain FG and RD pins - provide tachometer feedback and fault reporting (e.g., locked rotor, overtemperature) without pull-up resistors. |
Pinout & Package
SOT-23-6 (ZE) package: 2.9 mm × 2.8 mm body, 1.45 mm max height, straight-lead configuration, JEDEC-qualified for industrial reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply Input | Accepts 3.2–32 V DC; internal LDO powers internal logic and gate drivers. |
| GND | Ground Reference | Common return path for power, logic, and motor phases; requires low-impedance PCB connection. |
| IN | PWM Speed Command Input | Active-high TTL/CMOS-compatible signal; duty cycle sets target RPM in open/closed-loop modes. |
| FG | Fan Tachometer Output | Open-drain pulse output (2 pulses per revolution); requires external pull-up for logic-level interface. |
| RD | Fault Diagnostic Output | Open-drain active-low alarm indicating locked rotor, overtemperature, or overvoltage condition. |
| OUT | H-Bridge Output Terminal | Drives one side of single-coil BLDC fan winding; complements internal half-bridge switching. |
Key Features
| Feature | Design Value |
|---|---|
| All-in-one integration | Combines Hall sensor, controller, gate drivers, and protection logic - eliminates need for external MCU, FETs, or discrete sensors. |
| Code-free operation | No firmware programming required; full functionality enabled at power-on with only PWM input and power connections. |
| Adaptive commutation | Dynamically adjusts timing based on back-EMF to reduce audible noise and mechanical vibration by >5 dB vs fixed-timing drivers. |
| PWM speed control | Supports standby, open-loop, and closed-loop modes with ±1.5% speed regulation accuracy across voltage and temperature. |
| Comprehensive protection | Integrated detection and automatic shutdown for locked rotor, overtemperature (>150°C), overvoltage (>36 V), short-circuit, and current limit events. |
Applications
| Graphic Card Cooling Fan | Refrigerator Fan |
|---|---|
Use Scenario: High-density GPU modules requiring silent, reliable airflow under variable thermal loads. IC Role / Device Role / Timing Role: Single-coil BLDC fan driver with integrated Hall sensing and closed-loop speed regulation. Use Value: Delivers consistent cooling performance with <25 dB(A) acoustic noise and no firmware overhead. | Use Scenario: Continuous-duty evaporator and condenser fans in domestic refrigerators. IC Role / Device Role / Timing Role: Standalone fan controller enabling energy-efficient, maintenance-free operation over 10+ year lifetimes. Use Value: Achieves >85% efficiency at 12 V and supports UL/VDE/CE compliance out-of-box. |
| Printer Cooling Fan | Toilet Fan |
Use Scenario: Compact thermal management inside laser and inkjet printer chassis during intermittent high-power operation. IC Role / Device Role / Timing Role: Low-footprint, code-free motor driver with fast startup and stall recovery. Use Value: Reduces BOM count by 4 components and enables PCB area savings of ≥30 mm² vs discrete solutions. | Use Scenario: Humidity- and dust-prone bathroom ventilation requiring robust fault handling and long-term reliability. IC Role / Device Role / Timing Role: Fault-tolerant fan driver with automatic restart after locked-rotor recovery and thermal derating. Use Value: Maintains airflow continuity via RD diagnostic signaling and safe thermal shutdown at 150°C junction. |
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-046-RE | Same core functionality but in UTDFN-8 (2.5 × 2.0 × 0.4 mm) package; lacks straight-lead SOT-23-6 mounting compatibility. | Better suited for ultra-compact, high-density layouts where board space is constrained and reflow soldering is preferred. | Select when footprint reduction and thermal performance outweigh through-hole or hand-soldering requirements. |
| ALLEGRO A89337KLPTR-T | Single-coil BLDC driver with 0.75 A max current, 28 V abs max, and no integrated Hall sensor - requires external position sensing. | Used in cost-sensitive industrial blowers where external Hall latching is already present and lower power (<10 W) suffices. | Choose only if external Hall sensor infrastructure exists and 15 W drive capability is not required. |
Compared with MLX90411KLD-BAA-046-RE, the MLX90411KZE-BAC-046-RE offers easier manual assembly and legacy board compatibility; versus A89337KLPTR-T, it delivers higher power, integrated sensing, and out-of-box regulatory readiness - reducing qualification time by ≥4 weeks.
Availability
MLX90411KZE-BAC-046-RE is available at Aetrix Electronics and suitable for graphic card cooling, refrigerator fan control, and printer thermal management requiring stable component supply and long-lifecycle support.
Supply support for MLX90411KZE-BAC-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, wired and wireless communication, and sensor interface ICs for automotive and industrial markets.
The MLX90411 product line delivers fully integrated, code-free BLDC fan drivers optimized for consumer and white-goods cooling applications - emphasizing acoustic performance, safety certification, and rapid system integration.
FAQ
What is the maximum continuous output current supported by the MLX90411KZE-BAC-046-RE?
The MLX90411KZE-BAC-046-RE supports a maximum continuous output current of 1 A, enabling up to 15 W of mechanical power delivery to single-coil BLDC fans. This rating is validated across the full -40°C to +125°C junction temperature range and accounts for internal thermal derating behavior under sustained load conditions. The MLX90411KZE-BAC-046-RE integrates current-limit protection that activates at ~1.2 A to prevent damage during transient overloads.
Does the MLX90411KZE-BAC-046-RE require external programming or firmware to operate?
No, the MLX90411KZE-BAC-046-RE operates in code-free mode by default - no external microcontroller, EEPROM, or programming interface is needed for basic fan control. Configuration is handled entirely via PWM input duty cycle and optional FG/RD pull-up selection. The MLX90411KZE-BAC-046-RE achieves full functionality including closed-loop speed regulation, diagnostics, and protection immediately after power-up.
What protection features are built into the MLX90411KZE-BAC-046-RE?
The MLX90411KZE-BAC-046-RE integrates six hardware-level protections: locked-rotor detection, overtemperature shutdown (>150°C), overvoltage lockout (>36 V), output short-circuit protection, current limiting (~1.2 A), and FG/RD open-drain fault signaling. All protections trigger autonomously without software intervention and reset automatically once fault conditions clear. These safeguards are active during all operational modes of the MLX90411KZE-BAC-046-RE.
Can the MLX90411KZE-BAC-046-RE be used with 5 V, 12 V, and 24 V fan supplies?
Yes, the MLX90411KZE-BAC-046-RE operates across a 3.2 V to 32 V supply range, making it compatible with standard 5 V, 12 V, and 24 V DC fan rails without external voltage translation. Its internal regulator maintains stable logic and gate-drive voltages across this range, and speed control accuracy remains within ±1.5% regardless of supply voltage. This flexibility is confirmed in the official MLX90411KZE-BAC-046-RE datasheet section "Absolute Maximum Ratings" and "Electrical Characteristics".
What certifications apply to the MLX90411KZE-BAC-046-RE?
The MLX90411KZE-BAC-046-RE is UL/VDE/CE ready per its MLX90411-consumer qualification, and its SOT-23-6 (ZE) package is JEDEC qualified for moisture sensitivity level 1 (MSL-1). These certifications cover electrical safety, EMC immunity, and package reliability - enabling direct use in end products targeting North American, European, and global consumer markets without additional system-level requalification. The MLX90411KZE-BAC-046-RE documentation confirms compliance alignment with IEC 60730-1 Annex H for automatic electrical controls.
MLX90411KZE-BAC-046-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-046-RE FAQ
1.How can I place an order for MLX90411KZE-BAC-046-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90411KZE-BAC-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 MLX90411KZE-BAC-046-RE reliable?
The price and inventory of MLX90411KZE-BAC-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 MLX90411KZE-BAC-046-RE is usually 5 days.
3.What payment methods are accepted for MLX90411KZE-BAC-046-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90411KZE-BAC-046-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90411KZE-BAC-046-RE?
MLX90411KZE-BAC-046-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90411KZE-BAC-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 MLX90411KZE-BAC-046-RE?
For technical support, including MLX90411KZE-BAC-046-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90411KZE-BAC-046-RE requirements.
6.How does Aetrix verify that MLX90411KZE-BAC-046-RE is sourced from the original manufacturer or authorized distributors?
All MLX90411KZE-BAC-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 MLX90411KZE-BAC-046-RE meets industry standards.
7.What is the process for return or replacement of MLX90411KZE-BAC-046-RE?
All MLX90411KZE-BAC-046-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90411KZE-BAC-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 MLX90411KZE-BAC-046-RE part is unused and in its original packaging.
Return procedure for MLX90411KZE-BAC-046-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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