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Melexis Technologies NV MLX90412LLW-BAA-042-RE
- Part No.:
- MLX90412LLW-BAA-042-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 10-DFN Exposed Pad
- Datasheet:
-
MLX90412LLW-BAA-042-RE.pdf
- Description:
- IC FAN DRIVER 40V 2.2A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,515
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Product details
Overview
MLX90412LLW-BAA-042-RE from Melexis is an automotive-grade single-coil brushless DC fan and pump driver IC with integrated high-sensitivity Hall-effect sensor, 2.2 A current limit, closed-loop speed control (±1% accuracy), and programmable protections including OVP (22 V or 35 V), LRP, and TSD. It operates from 3.5 V to 32 V supply and supports junction temperatures from −40°C to +150°C, targeting 12 V/24 V boardnet cooling applications such as battery cooling fans and seat blowers.
For engineers reviewing the MLX90412LLW-BAA-042-RE datasheet, pinout, applications, or equivalent options, key selection considerations include its I²C programmability, adaptive low-noise commutation modes (including sinewave), FG/RD open-drain diagnostic output, and AEC-Q100 Rev-H qualification for automotive deployment.
Technical Context
The MLX90412LLW-BAA-042-RE implements sensorless rotor position estimation via integrated Hall sensor feedback and supports both open-loop and closed-loop speed regulation with ±1% speed accuracy across load, voltage, and temperature variations. Its adaptive commutation algorithm dynamically adjusts timing to maximize efficiency and minimize acoustic noise over the full speed range.
Protection architecture includes programmable overvoltage thresholds (22 V for 12 V systems, 35 V for 24 V systems), locked rotor detection with configurable timeout, thermal shutdown at 150°C junction, and short-circuit current limiting. Diagnostics are reported via FG/RD open-drain output with I²C-configurable behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.5 V to 32 V - supports direct connection to automotive 12 V and 24 V boardnets with 40 V transient robustness. |
| Max Motor Current | 2.2 A - enables up to 20 W motor drive capability while maintaining safe thermal operation. |
| Speed Control Accuracy | ±1% in closed-loop mode - ensures stable RPM under varying battery voltage, load torque, and production tolerances. |
| Operating Junction Temp | −40°C to +150°C - qualified for under-hood and cabin-mounted automotive blower/pump applications. |
| OVP Thresholds | Programmable: 22 V (12 V net) or 35 V (24 V net) - prevents damage during load dump transients. |
| Package | DFN10 3×3 mm with wettable flanks - enables automated optical inspection (AOI) and reliable solder joint formation. |
| Interface | I²C - allows end-of-line programming of protection thresholds, commutation mode, and diagnostics behavior. |
Pinout & Package
MLX90412LLW-BAA-042-RE uses a 10-pin Exposed Pad DFN package (3 mm × 3 mm, 0.9 mm height) with wettable flanks for AOI compatibility. The exposed thermal pad must be soldered to PCB ground for thermal management and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Connects to 3.5–32 V automotive rail; internal regulator powers logic and sensor. |
| GND | Ground reference | Common return for power, logic, and Hall sensor; ties to exposed thermal pad. |
| OUTP / OUTN | Half-bridge outputs | Drive external N-channel MOSFETs in single-coil BLDC configuration; support PWM switching. |
| HALL | Hall sensor output | Provides analog or digital rotor position signal; internally conditioned for commutation timing. |
| FG/RD | Diagnostics output | Open-drain flag indicating fault status (OCP, OVP, TSD, LRP); programmable via I²C. |
| SCL / SDA | I²C interface | Enable real-time configuration of protections, commutation mode, and standby behavior. |
| EN | Enable input | Active-high logic control for standby mode; reduces quiescent current to <100 µA. |
| REF | Reference voltage | Internal 1.2 V reference for Hall sensor biasing and ADC calibration. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Hall-effect sensor | Eliminates need for external position sensors, reducing BOM count and PCB area in single-coil BLDC designs. |
| Adaptive commutation | Optimizes switching timing per motor load and speed to maintain >85% efficiency across 1,000–15,000 RPM range. |
| Sinewave commutation option | Reduces torque ripple and mechanical vibration below 0.5 m/s² RMS, meeting OEM acoustic targets for cabin blowers. |
| Programmable OVP thresholds | Prevents false trips during ISO 7637-2 pulse 5a (load dump) by selecting 22 V or 35 V threshold matching vehicle architecture. |
| I²C configurability | Enables factory calibration of current limit, LRP timeout, and FG/RD fault mapping without hardware changes. |
Applications
| Battery Cooling Fan | Seat Blower |
|---|---|
Use Scenario: Forced-air cooling of EV traction battery packs during fast charging or high-power discharge cycles. IC Role / Device Role / Timing Role: Single-coil BLDC driver with closed-loop speed control and thermal fault monitoring. Use Value: Maintains consistent airflow despite 12–28 V battery voltage swing and ambient temperatures up to 85°C, extending pack life. | Use Scenario: Climate-controlled seat ventilation using compact axial fans mounted behind seat upholstery. IC Role / Device Role / Timing Role: Low-noise motor driver with sinewave commutation and programmable startup ramp. Use Value: Achieves <35 dB(A) acoustic emission at 1 m distance while delivering 15 CFM airflow at 12 V. |
| DC/DC Converter Cooling Fan | Axial Fan for HVAC Module |
Use Scenario: Thermal management of high-efficiency DC/DC converters in 48 V mild-hybrid architectures. IC Role / Device Role / Timing Role: Standby-capable driver with EN pin control and FG/RD fault reporting to main ECU. Use Value: Reduces system idle power by >90% via sub-100 µA standby current and enables predictive maintenance via fault logging. | Use Scenario: Cabin air distribution using multi-speed axial fans in automotive HVAC control modules. IC Role / Device Role / Timing Role: Closed-loop speed regulator with ±1% RPM accuracy across 10–100% duty cycle and −40°C to +85°C ambient. Use Value: Eliminates perceptible speed drift during engine-off battery operation and maintains airflow consistency across voltage sag events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-coil BLDC fan driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90411LLW-BAA-022-RE | Lower current limit (1.5 A), max 7 W output, no sinewave commutation mode, same package and pinout. | Targeted at smaller fans (<10 W) where acoustic performance is secondary to cost. | Select when thermal budget and acoustic requirements are relaxed and power demand is ≤7 W. |
| TB9057FG | Standalone gate driver (no integrated Hall sensor), requires external position sensing and MCU-based control loop. | Suitable for custom motor control algorithms or dual-coil topologies not supported by MLX90412. | Choose only if full control over commutation timing and diagnostics logic is required and additional MCU resources are available. |
Compared with MLX90412LLW-BAA-042-RE, the MLX90411 variant offers lower cost and power for simpler cooling tasks, while the TB9057FG provides flexibility at the expense of higher design complexity, BOM count, and validation effort.
Availability
MLX90412LLW-BAA-042-RE is available at Aetrix Electronics and suitable for battery cooling fans, seat blowers, and DC/DC converter cooling applications requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for MLX90412LLW-BAA-042-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 automotive driver ICs, with global R&D and manufacturing operations.
The MLX90412 product line delivers fully integrated, AEC-Q100-qualified BLDC drivers for automotive thermal management systems, emphasizing low-noise operation, field-programmability, and robustness in harsh environments.
FAQ
What is the maximum continuous motor current supported by MLX90412LLW-BAA-042-RE?
The MLX90412LLW-BAA-042-RE supports a maximum continuous motor current of 2.2 A, enabling up to 20 W of motor output power under typical thermal conditions. This current limit is factory-programmed and can be verified or adjusted via I²C interface. The device includes overcurrent protection that triggers within 1 µs to safeguard both the IC and motor windings.
Does MLX90412LLW-BAA-042-RE require an external microcontroller to operate?
No, MLX90412LLW-BAA-042-RE operates autonomously with built-in Hall sensor, closed-loop speed controller, and programmable protections. An external MCU is optional - used only for advanced configuration via I²C or system-level coordination. Standalone operation is enabled via EN pin control and analog/digital PWM input.
What overvoltage protection thresholds are available on MLX90412LLW-BAA-042-RE?
The MLX90412LLW-BAA-042-RE supports two programmable overvoltage protection thresholds: 22 V for 12 V automotive boardnets and 35 V for 24 V truck systems. These thresholds are selected during programming and protect against ISO 7637-2 load dump transients without requiring external TVS components.
Can MLX90412LLW-BAA-042-RE drive sinewave-commutated motors?
Yes, MLX90412LLW-BAA-042-RE includes a dedicated sinewave commutation mode that significantly reduces torque ripple and mechanical vibration. This mode is selectable via I²C register configuration and is validated for use in cabin air blowers where acoustic performance is critical.
Is MLX90412LLW-BAA-042-RE qualified to AEC-Q100 standards?
Yes, MLX90412LLW-BAA-042-RE is qualified to AEC-Q100 Revision H, including stress testing for temperature cycling, HTOL, ESD, and EMC. The qualification applies to the DFN10 3×3 mm package variant and covers the full −40°C to +150°C junction temperature range specified in the datasheet.
MLX90412LLW-BAA-042-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 10-DFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- -
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- -
- Interface:
- I2C, PWM
- Technology:
- -
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- 2.2A
- Voltage - Supply:
- 3.5V ~ 32V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 10-DFN (3x3)
MLX90412LLW-BAA-042-RE FAQ
1.How can I place an order for MLX90412LLW-BAA-042-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90412LLW-BAA-042-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 MLX90412LLW-BAA-042-RE reliable?
The price and inventory of MLX90412LLW-BAA-042-RE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90412LLW-BAA-042-RE is usually 5 days.
3.What payment methods are accepted for MLX90412LLW-BAA-042-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90412LLW-BAA-042-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90412LLW-BAA-042-RE?
MLX90412LLW-BAA-042-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90412LLW-BAA-042-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 MLX90412LLW-BAA-042-RE?
For technical support, including MLX90412LLW-BAA-042-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90412LLW-BAA-042-RE requirements.
6.How does Aetrix verify that MLX90412LLW-BAA-042-RE is sourced from the original manufacturer or authorized distributors?
All MLX90412LLW-BAA-042-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 MLX90412LLW-BAA-042-RE meets industry standards.
7.What is the process for return or replacement of MLX90412LLW-BAA-042-RE?
All MLX90412LLW-BAA-042-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90412LLW-BAA-042-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 MLX90412LLW-BAA-042-RE part is unused and in its original packaging.
Return procedure for MLX90412LLW-BAA-042-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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