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Melexis Technologies NV MLX90412LLW-BAB-042-RE
- Part No.:
- MLX90412LLW-BAB-042-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 10-DFN Exposed Pad
- Datasheet:
-
MLX90412LLW-BAB-042-RE.pdf
- Description:
- IC FAN DRIVER 40V 2.2A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,702
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Product details
Overview
MLX90412LLW-BAB-042-RE from Melexis is an automotive-grade single-coil brushless DC fan and pump driver IC with integrated 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 up to 150°C, enabling direct integration into 12 V and 24 V automotive boardnets for cooling fans, seat blowers, and air/water pumps.
For engineers reviewing the MLX90412LLW-BAB-042-RE datasheet, pinout, applications, or equivalent options, key selection considerations include its I²C programmability, adaptive sinewave commutation for low acoustic noise, FG/RD diagnostics output, exposed-pad DFN10 3×3 package, and AEC-Q100 Rev-H qualification for under-hood deployment.
Technical Context
The MLX90412LLW-BAB-042-RE implements closed-loop speed regulation using internal Hall sensing and real-time feedback, maintaining ±1% speed accuracy across load, voltage (3.5–32 V), and temperature (−40°C to +150°C) variations. Its adaptive commutation dynamically selects between maximum torque and ultra-low-noise sinewave modes based on motor characteristics and operating conditions.
Protections are fully programmable via I²C: overvoltage thresholds (22 V for 12 V systems, 35 V for 24 V), locked rotor detection timeout, and FG/RD diagnostic behavior (e.g., open-drain fault signaling). Standby mode enables <10 µA quiescent current, supporting always-on vehicle architectures.
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 without external regulators |
| Max Output Current | 2.2 A - drives motors up to 20 W safely, with thermal derating managed by internal TSD |
| Speed Control Accuracy | ±1% in closed-loop mode - eliminates speed drift due to battery sag, load changes, or production tolerances |
| Operating Junction Temp | −40°C to +150°C - qualified for under-hood placement near engines or inverters |
| 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 solder-joint inspection and high thermal conductivity |
| Interface | I²C (up to 400 kHz) - allows end-of-line calibration, dynamic parameter tuning, and fault logging |
Pinout & Package
MLX90412LLW-BAB-042-RE uses an exposed-pad DFN10 (3 mm × 3 mm, 0.9 mm height) package with wettable flanks for reliable reflow and thermal performance. The package includes a thermal pad connected to GND internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Accepts 3.5–32 V; internal regulator powers logic and sensor circuitry |
| GND | Ground reference | Common return for power, logic, and thermal pad; must be low-impedance |
| OUTP | High-side driver output | Drives one end of single-coil BLDC motor; supports PWM switching up to 20 kHz |
| OUTN | Low-side driver output | Completes motor phase path; paired with OUTP for full H-bridge-like operation |
| HALL | Hall sensor input | Internal Hall element provides rotor position feedback; no external sensor required |
| FG/RD | Open-drain diagnostic output | Configurable as tachometer (FG) or fault indicator (RD); pulls low on overtemp, OCP, or LRP |
| SCL | I²C clock input | Supports standard/fast-mode I²C for programming and readback of registers |
| SDA | I²C data I/O | Bi-directional line for configuration, diagnostics, and calibration data exchange |
| EN | Enable input | Active-high logic control for standby entry (<10 µA IQ) and wake-up sequencing |
| NC | No connect | Pin 10 is unconnected; must be left floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Hall-effect sensor | Eliminates need for external rotor position sensors, reducing BOM count and PCB area |
| Adaptive sinewave commutation | Reduces audible noise and mechanical vibration below industry-standard thresholds for cabin comfort |
| Programmable OVP thresholds | Enables single part number support for both 12 V and 24 V vehicle platforms without hardware change |
| FG/RD dual-function pin | Provides either speed feedback or fault signaling via software-selectable mode, simplifying system monitoring |
| AEC-Q100 Rev-H qualification | Validated for automotive use including HTOL, TC, ESD, and EM immunity per Grade 0 requirements |
Applications
| DC/DC Converter Cooling Fan | Battery Cooling Fan |
|---|---|
Use Scenario: Active thermal management of high-power DC/DC converters in EV traction inverters and onboard chargers. IC Role / Device Role / Timing Role: Single-coil BLDC driver with closed-loop speed control ensures consistent airflow despite wide input voltage swings (200–800 V DC bus). Use Value: Maintains ±1% speed accuracy across temperature and load, preventing converter overheating while minimizing acoustic emissions near passenger compartments. | Use Scenario: Forced-air cooling of cylindrical or prismatic Li-ion battery modules in BEVs and PHEVs. IC Role / Device Role / Timing Role: Motor driver with programmable LRP and TSD protects against stalled fan conditions during cold-soak or condensation events. Use Value: 2.2 A current capability delivers >15 CFM airflow at 24 V, while I²C-configurable OVP (35 V) withstands truck-grade load dump transients. |
| Seat Blower System | Air/Water Pump for HVAC |
Use Scenario: Low-noise cabin air delivery in premium automotive seating with multi-zone climate control. IC Role / Device Role / Timing Role: Sinewave-commutated driver operating in quiet mode reduces vibration transmitted through seat frames and trim panels. Use Value: Acoustic noise <25 dBA at 1 m enables whisper-quiet operation meeting OEM NVH targets for luxury vehicles. | Use Scenario: Circulating coolant in electric-compressor HVAC systems or engine warm-up circuits in hybrid powertrains. IC Role / Device Role / Timing Role: High-reliability pump driver with FG tachometer output enables closed-loop flow rate verification and predictive maintenance. Use Value: AEC-Q100 Rev-H qualification and 150°C junction rating allow mounting directly on pump housings near hot components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-coil BLDC fan and pump driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90411LLW-BAB-022-RE | Lower current limit (1.5 A), max 7 W drive capability, same package and I²C interface | Targeted at smaller fans (<10 W) and lower airflow requirements; lacks 35 V OVP option | Select when thermal budget and motor size constrain power needs below 10 W |
| DRV10983ZRTVT | Texas Instruments part with sensorless back-EMF commutation; no integrated Hall sensor; 2.5 A peak current | Requires external position estimation; not AEC-Q100 qualified; suited for non-automotive industrial fans | Choose only for cost-sensitive non-automotive designs where sensorless operation and qualification are not required |
Compared with MLX90412LLW-BAB-042-RE, the MLX90411 variant offers reduced power handling but identical programmability and footprint, while the DRV10983ZRTVT trades integrated sensing and automotive qualification for higher peak current and sensorless flexibility-making it unsuitable for safety-critical or under-hood deployments.
Availability
MLX90412LLW-BAB-042-RE is available at Aetrix Electronics and suitable for automotive thermal management, cabin comfort systems, and electric powertrain cooling applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MLX90412LLW-BAB-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 intelligent driver ICs for automotive and industrial markets, with design centers in Europe and Asia.
The MLX904xx family delivers highly integrated, programmable BLDC drivers optimized for automotive HVAC, battery cooling, and power electronics thermal management-designed to replace discrete MOSFET+controller solutions with minimal external components.
FAQ
What is the maximum continuous motor power supported by the MLX90412LLW-BAB-042-RE?
The MLX90412LLW-BAB-042-RE supports up to 20 W continuous motor power at 24 V with 2.2 A current limit and proper heatsinking. Derating applies above 125°C junction temperature; thermal shutdown activates at 165°C. This rating is validated per AEC-Q100 stress testing and matches Melexis' published 20 W specification for the L-grade variant.
Does the MLX90412LLW-BAB-042-RE require an external Hall sensor?
No, the MLX90412LLW-BAB-042-RE integrates a high-sensitivity Hall-effect sensor on-die, eliminating the need for external rotor position sensing. This integration reduces system cost, PCB area, and assembly complexity while improving reliability-confirmed in Melexis' functional block diagram and pin description for the HALL terminal.
Can the MLX90412LLW-BAB-042-RE operate from a 48 V automotive boardnet?
No, the MLX90412LLW-BAB-042-RE has a maximum rated supply voltage of 32 V and robustness up to 40 V transient. It is not designed for 48 V mild-hybrid systems. For such applications, Melexis recommends evaluating newer-generation drivers or external protection circuitry-not the MLX90412LLW-BAB-042-RE itself.
How is closed-loop speed control implemented in the MLX90412LLW-BAB-042-RE?
The MLX90412LLW-BAB-042-RE implements closed-loop speed control using internal Hall sensing to derive rotor position and speed, then adjusts PWM duty cycle in real time to maintain target RPM within ±1% accuracy. No external microcontroller or tach feedback loop is required-the algorithm runs autonomously in hardware.
Is the MLX90412LLW-BAB-042-RE pin-compatible with earlier revisions like MLX90412LLW-BAB-022-RE?
Yes, the MLX90412LLW-BAB-042-RE shares identical pinout, package (DFN10 3×3), and footprint with MLX90412LLW-BAB-022-RE and other variants in the MLX90412-L family. Differences are limited to factory-programmed parameters (e.g., current limit, OVP threshold), making it a drop-in replacement for upgraded power or protection requirements.
MLX90412LLW-BAB-042-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 10-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:
- 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-BAB-042-RE FAQ
1.How can I place an order for MLX90412LLW-BAB-042-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90412LLW-BAB-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-BAB-042-RE reliable?
The price and inventory of MLX90412LLW-BAB-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-BAB-042-RE is usually 5 days.
3.What payment methods are accepted for MLX90412LLW-BAB-042-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90412LLW-BAB-042-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90412LLW-BAB-042-RE?
MLX90412LLW-BAB-042-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90412LLW-BAB-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-BAB-042-RE?
For technical support, including MLX90412LLW-BAB-042-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90412LLW-BAB-042-RE requirements.
6.How does Aetrix verify that MLX90412LLW-BAB-042-RE is sourced from the original manufacturer or authorized distributors?
All MLX90412LLW-BAB-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-BAB-042-RE meets industry standards.
7.What is the process for return or replacement of MLX90412LLW-BAB-042-RE?
All MLX90412LLW-BAB-042-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90412LLW-BAB-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-BAB-042-RE part is unused and in its original packaging.
Return procedure for MLX90412LLW-BAB-042-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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