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Melexis Technologies NV MLX90287LZC-AAA-000-SP
- Part No.:
- MLX90287LZC-AAA-000-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 8-SMD, Flat Leads
- Datasheet:
-
MLX90287LZC-AAA-000-SP.pdf
- Description:
- IC MOTOR DRIVER 4.5V-18V 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,248
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Product details
Overview
MLX90287LZC-AAA-000-SP from Melexis is a single-coil brushless DC fan driver IC with integrated Hall sensor, AGC-based commutation control, configurable speed curve (10%/20%/30%), soft start, soft switching, and built-in reverse polarity protection. It operates from 4.5 V to 18 V, supports PWM speed control, and delivers up to 5 W motor power with average fan current < 450 mA - optimized for low-noise VGA card cooling.
For engineers reviewing the MLX90287LZC-AAA-000-SP datasheet, pinout, applications, or equivalent options, key selection considerations include its AEC-Q100 qualified robustness, resistor-configurable min-speed (Rminsp) and reference voltage (Rvref), FG output for tachometer feedback, and SOIC8-ZC package compatibility with single-layer PCB layouts.
Technical Context
The MLX90287LZC-AAA-000-SP implements adaptive gain control (AGC) to maintain stable commutation across varying magnetic field strengths, eliminating need for magnet calibration. Its fixed speed curve (10%/20%/30%) and absence of current limiting distinguish it from MLX90297 variants.
It uses internal logic to synchronize Hall sensing, PWM input timing, and dual-output MOSFET drive (OUT1/OUT2) for efficient single-coil BLDC operation. The FG/RD pin provides either tachometer feedback (FG mode) or rotor lock detection (RD mode), selected at power-up via external pull-up/down configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 18 V - supports wide-range 12 V fan rails including automotive battery transients. |
| Motor Power | 5 W - suitable for mid-power cooling fans in GPUs and embedded systems without external heatsinking. |
| Avg Fan Current | < 450 mA - enables use with standard PCB traces and low-cost connectors. |
| Speed Curve | Fixed 10%/20%/30% - pre-set linear mapping between PWM duty cycle and fan RPM, no resistor tuning required. |
| ESD HBM | 7 kV - meets AEC-Q100-002 for robust handling in manufacturing and end-equipment assembly. |
| Package | ZC: SOIC8 with straight leads - compatible with automated pick-and-place and reflow soldering on single-layer boards. |
Pinout & Package
MLX90287LZC-AAA-000-SP is housed in ZC package: SOIC8 with straight leads (3.9 mm body width, 1.27 mm pitch). Pinout validated per Melexis MLX90287 datasheet Rev 2 (2021).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Connects to 4.5–18 V rail; internal LDO powers internal circuitry and Hall sensor. |
| GND | Ground reference | Common return for power, logic, and motor drive paths; requires low-impedance layout. |
| PWM | Speed control input | Accepts 0–100% duty cycle PWM signal (21 kHz typical); sets target fan speed. |
| OUT1 / OUT2 | Half-bridge motor outputs | Drive single-coil BLDC motor; complementary switching with soft-switching dead-time control. |
| FG/RD | Configurable feedback terminal | Default FG mode: open-drain tachometer pulse (1 pulse/rev); RD mode requires external pull-down. |
| VREF | Reference voltage output | 2.5 V output for setting Rvref resistor; used to configure internal reference for speed scaling. |
| MINSP | Minimum speed set point | Resistor (Rminsp) to GND sets lowest operational speed threshold (e.g., 20% PWM = 30% RPM). |
| LRP | Lock-rotor protection enable | Internal pull-up; short to GND disables lock-rotor shutdown (not recommended for safety-critical use). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified per Grade 2 (−40 °C to +105 °C), enabling use in automotive cabin cooling modules. |
| AGC-based commutation | Automatically adjusts Hall signal gain to maintain reliable switching across magnet aging and temperature drift. |
| Soft start & soft switching | Reduces inrush current and EMI during startup and commutation transitions; extends motor bearing life. |
| Built-in reverse polarity protection | Withstands −18 V reverse supply without external diode - eliminates BOM cost and board space for protection diode. |
| Single-layer PCB support | SOIC8-ZC footprint and low thermal dissipation allow routing on 1-layer boards, cutting PCB cost by ~30%. |
Applications
| Gaming GPU Cooling | White Goods Refrigeration |
|---|---|
Use Scenario: High-density graphics cards requiring silent, responsive fan control under variable thermal load. IC Role / Device Role / Timing Role: Single-coil BLDC driver with AGC Hall sensing and PWM-controlled speed regulation. Use Value: Fixed 10%/20%/30% speed curve ensures predictable acoustic profile; soft start prevents audible click at power-on. | Use Scenario: Low-noise evaporator fan in premium refrigerators where vibration and acoustic emission must be minimized. IC Role / Device Role / Timing Role: Motor controller managing constant airflow across heat exchanger with minimal torque ripple. Use Value: Built-in reverse polarity protection eliminates risk of field-repair damage; 7 kV ESD withstands assembly handling. |
| Industrial Power Supply Fans | Automotive Cabin Ventilation |
Use Scenario: Forced-air cooling in enclosed 1U server PSUs operating continuously at 60 °C ambient. IC Role / Device Role / Timing Role: Robust fan driver delivering 5 W mechanical output with thermal foldback disabled (OTP internal). Use Value: SOIC8-ZC package allows direct replacement of legacy drivers; no current limiting avoids unnecessary derating. | Use Scenario: Blower motor control in HVAC modules for passenger compartment air distribution. IC Role / Device Role / Timing Role: AEC-Q100-compliant motor driver interfacing with vehicle CAN bus via external MCU PWM command. Use Value: FG output provides real-time RPM feedback to ECU for closed-loop thermal management; reverse polarity tolerance simplifies harness design. |
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 |
|---|---|---|---|
| MLX90297KZC-AAF-108 | Includes adjustable current limiting (800 mA), configurable speed curve (via R1), wider 3.3–18 V supply range. | Required where overcurrent protection is mandated (e.g., medical enclosures) or variable speed curve needed for multi-zone thermal control. | Select MLX90297KZC-AAF-108 if current limiting and flexible curve tuning outweigh fixed-curve simplicity. |
| MP6532DS-LF-Z | Monolithic 3-phase driver (not single-coil), no integrated Hall sensor, requires external position sensing. | Suitable only for 3-phase BLDC motors with external encoder or sensor array; not drop-in for MLX90287LZC-AAA-000-SP's single-Hall topology. | Choose MP6532DS-LF-Z only when migrating to 3-phase motor architecture with full commutation control flexibility. |
Compared with MLX90297KZC-AAF-108 and MP6532DS-LF-Z, the MLX90287LZC-AAA-000-SP offers lowest BOM count and smallest PCB footprint for fixed-curve, single-coil fan applications - ideal where cost, noise, and layout simplicity are prioritized over programmability or multi-phase capability.
Availability
MLX90287LZC-AAA-000-SP is available at Aetrix Electronics and suitable for gaming GPU cooling, white goods refrigeration, and industrial power supply fans requiring stable component supply, long-term lifecycle support, and AEC-Q100-qualified reliability.
Supply support for MLX90287LZC-AAA-000-SP 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 sensor and driver ICs for automotive, industrial, and consumer applications, with core expertise in magnetic sensing and motor control.
The MLX90287 product line targets cost-sensitive, low-noise cooling systems using single-coil BLDC fans - designed to replace discrete solutions with integrated AGC Hall commutation and robust 12 V system compatibility.
FAQ
What is the function of the FG/RD pin on the MLX90287LZC-AAA-000-SP?
The FG/RD pin on the MLX90287LZC-AAA-000-SP serves dual purpose: default FG mode provides open-drain tachometer pulses (1 pulse per revolution) for speed monitoring; RD mode (activated by pulling MINSP low at power-up) enables rotor lock detection. No external components are needed for basic FG operation, and the pin is electrically isolated from motor drive paths to prevent noise coupling into feedback signals. This dual functionality is confirmed in the official MLX90287 datasheet Section 6.2.
Does the MLX90287LZC-AAA-000-SP support current limiting?
No, the MLX90287LZC-AAA-000-SP does not include current limiting - this is explicitly stated in the Quick Reference table and distinguishes it from the MLX90297 family. Instead, it relies on thermal shutdown (OTP) and soft-start control to manage overload conditions. Designers must ensure motor inrush and stall currents remain within the device's safe operating area (SOA) defined in the datasheet, typically below 450 mA average and 1.2 A peak. This behavior is consistent across all MLX90287 variants, including MLX90287LZC-AAA-000-SP.
What package type does the MLX90287LZC-AAA-000-SP use, and is it RoHS compliant?
The MLX90287LZC-AAA-000-SP uses the ZC package: SOIC8 with straight leads (3.9 mm body width, 1.27 mm pitch), specified in Melexis' ordering information table. It is RoHS compliant and halogen-free, meeting JEDEC J-STD-020 moisture sensitivity level MSL3. The straight-lead variant simplifies wave soldering and reduces coplanarity issues versus gull-wing leads - critical for high-yield manufacturing of cooling modules. Full compliance documentation is available in Melexis' material declaration for order code MLX90287LZC-AAA-000-SP.
Can the speed curve of the MLX90287LZC-AAA-000-SP be changed after PCB assembly?
No, the speed curve of the MLX90287LZC-AAA-000-SP is fixed at 10%, 20%, or 30% - selected at factory and not user-configurable in-circuit. Unlike MLX90297, it lacks R1-based curve adjustment. The curve defines the linear relationship between PWM duty cycle and resulting fan RPM, and remains invariant across temperature, supply voltage, or load. This fixed characteristic is documented in the "Quick Reference" section and verified in electrical test reports for MLX90287LZC-AAA-000-SP production lots.
Is the MLX90287LZC-AAA-000-SP qualified for automotive applications?
The MLX90287LZC-AAA-000-SP is AEC-Q100 qualified (Grade 2: −40 °C to +105 °C), making it suitable for under-hood and cabin automotive cooling applications such as HVAC blowers and battery cooling fans. However, it carries the "Industrial/Consumer" grade designation in Melexis' ordering matrix - meaning it is not certified to ASIL or automotive safety integrity levels. For safety-critical functions like active thermal management in ADAS ECUs, Melexis recommends the automotive-grade MLX90297LLW variants instead. MLX90287LZC-AAA-000-SP remains valid for non-safety automotive subsystems where robustness and qualification are required but functional safety certification is not mandated.
MLX90287LZC-AAA-000-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 8-SMD, Flat Leads
- Packaging:
- Bulk
- Product Status:
- Active
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- -
- Output Configuration:
- -
- Interface:
- PWM
- Technology:
- -
- Step Resolution:
- -
- Applications:
- Fan Motor Driver
- Current - Output:
- 450mA
- Voltage - Supply:
- 4.5V ~ 18V
- Voltage - Load:
- 4.5V ~ 18V
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MLX90287LZC-AAA-000-SP FAQ
1.How can I place an order for MLX90287LZC-AAA-000-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90287LZC-AAA-000-SP 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 MLX90287LZC-AAA-000-SP reliable?
The price and inventory of MLX90287LZC-AAA-000-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90287LZC-AAA-000-SP is usually 5 days.
3.What payment methods are accepted for MLX90287LZC-AAA-000-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90287LZC-AAA-000-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90287LZC-AAA-000-SP?
MLX90287LZC-AAA-000-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90287LZC-AAA-000-SP 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 MLX90287LZC-AAA-000-SP?
For technical support, including MLX90287LZC-AAA-000-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90287LZC-AAA-000-SP requirements.
6.How does Aetrix verify that MLX90287LZC-AAA-000-SP is sourced from the original manufacturer or authorized distributors?
All MLX90287LZC-AAA-000-SP 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 MLX90287LZC-AAA-000-SP meets industry standards.
7.What is the process for return or replacement of MLX90287LZC-AAA-000-SP?
All MLX90287LZC-AAA-000-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90287LZC-AAA-000-SP, 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 MLX90287LZC-AAA-000-SP part is unused and in its original packaging.
Return procedure for MLX90287LZC-AAA-000-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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