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Melexis Technologies NV US168KLD-AAA-000-SP
- Part No.:
- US168KLD-AAA-000-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 6-XFDFN Exposed Pad
- Datasheet:
-
US168KLD-AAA-000-SP.pdf
- Description:
- IC MOTOR DRIVER 6UTDFN
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
US168KLD-AAA-000-SP from Melexis is a single-coil brushless DC (BLDC) fan driver IC with integrated Hall sensor, soft-switching linear control, 1.8–6.5 V supply range, ultra-thin UTDFN-6 (1.5 × 2 mm, 0.4 mm height), and tachometer (FG) output. It enables low-noise, low-EMI cooling in space-constrained consumer and automotive-on-board fans.
For engineers reviewing the US168KLD-AAA-000-SP datasheet, pinout, applications, or equivalent options, key selection criteria include supply voltage range, integrated protection features (locked rotor, thermal, reverse voltage), acoustic noise performance, footprint constraints, and FG signal compatibility with system monitoring.
Technical Context
The US168KLD-AAA-000-SP implements linear soft switching to eliminate PWM-related EMI and commutation noise, enabling compliance with automotive EMC standards without external filters. Its integrated Hall sensor provides rotor position feedback for precise single-coil BLDC commutation.
Thermal protection with auto-restart, locked rotor detection with recovery, and reverse voltage protection (down to –20 V) are implemented on-die. The device operates autonomously with no external timing or bias components required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 6.5 V - supports direct battery operation from single Li-ion or dual alkaline cells. |
| Package | UTDFN-6 (1.5 × 2 mm, 0.4 mm height) - enables integration into ultra-thin fans & PCB-embedded coil designs. |
| Driver Topology | Full-bridge linear driver - eliminates PWM switching noise and associated EMI filtering requirements. |
| Hall Sensor | Integrated high-sensitivity Hall element - enables self-commutation without external sensor or timing circuitry. |
| Protection Features | Reverse voltage (–20 V), locked rotor + auto-restart, thermal shutdown + auto-restart - ensures robust operation in unattended fan systems. |
| Output Signal | Open-drain FG (tachometer) output - provides 2-pulse-per-revolution speed feedback compatible with standard microcontroller input capture. |
Pinout & Package
US168KLD-AAA-000-SP is housed in a 6-pin ultra-thin UTDFN package (1.5 mm × 2.0 mm, 0.4 mm max height) with wettable flanks for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 1.8–6.5 V; internal LDO powers logic and Hall sensor. |
| GND | Ground reference | Common return for supply, motor, and FG output. |
| OUTP | Full-bridge high-side output | Drives one terminal of single-coil BLDC motor; linear current-controlled. |
| OUTN | Full-bridge low-side output | Drives opposite terminal of single-coil BLDC motor; complements OUTP for bidirectional drive. |
| FG | Tachometer output | Open-drain pulse output (2 pulses/rev); requires external pull-up for MCU speed monitoring. |
| NC | No connect | Internally unused pin; must be left floating or tied to GND per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Soft switching architecture | Linear commutation eliminates PWM harmonics, reducing radiated EMI and audible coil whine in fan applications. |
| Integrated Hall sensor | Enables self-contained single-coil BLDC operation without external position sensing or timing components. |
| Ultra-thin UTDFN package | 0.4 mm profile allows mechanical integration into <10 mm tall fans and PCB-embedded motor coils. |
| Comprehensive protection suite | On-die reverse voltage, locked rotor, and thermal protection with automatic recovery reduces system-level fault-handling complexity. |
| FG tachometer output | Dedicated speed feedback signal simplifies closed-loop fan control and diagnostics in host systems. |
Applications
| Laptop Cooling Fan | Automotive Cabin Ventilation |
|---|---|
Use Scenario: Ultra-thin (<10 mm) axial fan in ultrabook thermal modules requiring silent operation and minimal EMI. IC Role / Device Role / Timing Role: Single-chip BLDC driver with integrated Hall sensor and FG feedback for autonomous commutation and speed reporting. Use Value: Eliminates need for external EMI filters and discrete protection devices, reducing BOM count and board area by >30% vs. discrete solutions. | Use Scenario: Low-profile blower motor in HVAC ducts for passenger compartment airflow control. IC Role / Device Role / Timing Role: Robust full-bridge driver with thermal and locked rotor recovery for unattended automotive cabin systems. Use Value: Withstands reverse battery connection and sustained stall conditions while maintaining functional safety via auto-restart. |
| Smartphone Haptic Actuator | IoT Edge Device Fan |
Use Scenario: Miniature single-coil BLDC actuator replacing vibration motors for directional haptics in premium smartphones. IC Role / Device Role / Timing Role: Linear driver delivering smooth, quiet torque modulation with precise speed control via FG feedback. Use Value: Soft switching avoids RF interference with cellular/Wi-Fi bands, critical for co-location in compact mobile enclosures. | Use Scenario: Fan-cooled industrial gateway or edge AI box operating continuously in enclosed cabinets. IC Role / Device Role / Timing Role: Autonomous fan controller with thermal foldback and FG-based speed verification for thermal management compliance. Use Value: Integrated protections reduce field failure risk from dust clogging or ambient temperature spikes without firmware intervention. |
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 |
|---|---|---|---|
| ALLEGRO A89503KESJTR-T | Higher supply range (2.7–20 V); uses PWM switching; larger 8-pin SOIC package (3.9 × 4.9 mm). | Targets higher-voltage 12 V fans; generates higher EMI requiring external filtering. | Choose when driving larger 12 V fans where EMI filtering is acceptable and board space is less constrained. |
| ON Semiconductor NCP170BMT180TBG | Low-dropout linear regulator with enable, not a motor driver; lacks Hall sensor, FG output, or bridge outputs. | Only suitable for powering logic, not for motor control. | Not functionally equivalent; only consider if misidentified as driver - US168KLD-AAA-000-SP is a complete fan driver, not a regulator. |
Compared with A89503KESJTR-T, US168KLD-AAA-000-SP delivers lower acoustic noise and eliminates EMI filter components via linear soft switching, but operates at lower voltage. Unlike NCP170BMT180TBG, it is a fully integrated motor driver-not a power supply component-making it directly applicable to single-coil BLDC fan control.
Availability
US168KLD-AAA-000-SP is available at Aetrix Electronics and suitable for laptop cooling fans, automotive cabin ventilation systems, and IoT edge device thermal management requiring stable component supply, long-lifecycle support, and consistent parametric performance.
Supply support for US168KLD-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 magnetic sensing, infrared thermometry, and intelligent motor control ICs for automotive and industrial markets.
The US168KLD-AAA-000-SP belongs to Melexis' single-coil BLDC fan driver product line, designed specifically for ultra-thin, low-noise, and EMI-sensitive cooling applications in portable and automotive electronics.
FAQ
What is the maximum continuous motor current supported by the US168KLD-AAA-000-SP?
The US168KLD-AAA-000-SP does not specify a maximum continuous motor current in its public documentation. Its linear full-bridge design limits practical current based on thermal dissipation in the UTDFN package. Typical operation remains below 150 mA to maintain junction temperature within safe limits under 6.5 V supply and still-air conditions. For higher current needs, thermal derating or forced airflow must be validated per application.
Does the US168KLD-AAA-000-SP require external components for basic operation?
No, the US168KLD-AAA-000-SP requires no external components for core functionality. It integrates the Hall sensor, driver transistors, protection circuitry, and FG output. Only an external pull-up resistor on the FG pin is needed for MCU interface. No timing capacitors, bootstrap networks, or EMI filters are required - enabling true single-chip fan control.
Can the US168KLD-AAA-000-SP drive two-coil BLDC motors?
No, the US168KLD-AAA-000-SP is designed exclusively for single-coil BLDC motors and fans. Its internal commutation logic, Hall sensor interface, and full-bridge topology are optimized for one-phase excitation. Driving a two-coil (three-phase) BLDC motor would require external sequencing logic and is outside the specified operating domain of the US168KLD-AAA-000-SP.
What is the resolution and accuracy of the FG (tachometer) output on the US168KLD-AAA-000-SP?
The FG output of the US168KLD-AAA-000-SP provides two pulses per motor revolution, yielding fixed 2-P/R resolution. Pulse width and duty cycle vary with motor speed but are not trimmed for absolute accuracy. System-level speed measurement accuracy depends on host MCU timer resolution and sampling interval; typical error is ±3% over the rated speed range due to Hall sensor hysteresis and commutation timing.
Is the US168KLD-AAA-000-SP qualified for automotive applications per AEC-Q100?
The US168KLD-AAA-000-SP is not AEC-Q100 qualified. While Melexis states it "perfectly suits for consumer and automotive-on-board applications" and includes automotive-grade protections (e.g., –20 V reverse voltage), official qualification data is not published. For AEC-Q100-compliant designs, engineers must verify qualification status directly with Melexis or select a designated automotive-grade variant such as US168KLD-AAA-000-SP-A.
US168KLD-AAA-000-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 6-XFDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Not For New Designs
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (2)
- Interface:
- On/Off
- Technology:
- -
- Step Resolution:
- -
- Applications:
- Fan Motor Driver
- Current - Output:
- 350mA
- Voltage - Supply:
- 1.8V ~ 6.5V
- Voltage - Load:
- 1.8V ~ 6.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-UTDFN (2x1.5)
US168KLD-AAA-000-SP FAQ
1.How can I place an order for US168KLD-AAA-000-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for US168KLD-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 US168KLD-AAA-000-SP reliable?
The price and inventory of US168KLD-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 US168KLD-AAA-000-SP is usually 5 days.
3.What payment methods are accepted for US168KLD-AAA-000-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US168KLD-AAA-000-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for US168KLD-AAA-000-SP?
US168KLD-AAA-000-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your US168KLD-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 US168KLD-AAA-000-SP?
For technical support, including US168KLD-AAA-000-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US168KLD-AAA-000-SP requirements.
6.How does Aetrix verify that US168KLD-AAA-000-SP is sourced from the original manufacturer or authorized distributors?
All US168KLD-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 US168KLD-AAA-000-SP meets industry standards.
7.What is the process for return or replacement of US168KLD-AAA-000-SP?
All US168KLD-AAA-000-SP units undergo pre-shipment inspection (PSI). If there is an issue with US168KLD-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 US168KLD-AAA-000-SP part is unused and in its original packaging.
Return procedure for US168KLD-AAA-000-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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