AMT49400GLKATR

Motor Drivers, Controllers Overview

The AMT49400GLKATR is a windowless sinusoidal BLDC fan driver from Allegro MicroSystems, designed for 12 V fans in desktops and GPUs. It integrates a three-phase power MOSFET bridge with sensorless FOC control via I2C interface. The device operates on a supply voltage of 4 V to 16 V and functions within a temperature range of -40°C to +105°C. It utilizes a 10-SOIC package with exposed pad for surface mount installation. The component supports humidity sensitivity level 2 (1 year) and complies with RoHS3 standards.

Motor Drivers, Controllers Feature Summary

• Integrates a three-phase power MOSFET bridge with digital sensorless field-oriented control algorithms.
• Employs a windowless sinusoidal drive technique to minimize audible fan noise.
• Features an I2C interface for configuration and parameter setting via internal EEPROM.

Motor Drivers, Controllers Applications

• Desktop computer cooling systems
• All-in-one PC thermal management
• GPU and CPU heat sink fans
• Home appliance motor drives

Motor Drivers, Controllers Procurement Notes

Verify the specific suffix GLKATR against the official datasheet to confirm the SOIC-10 package and reel packaging format. Ensure the design accommodates the specified 4 V to 16 V input range and -40°C to +105°C operating temperature. Confirm I2C address settings and EEPROM programming requirements during integration.

Motor Drivers, Controllers Selection Notes

Select this component for applications requiring low acoustic noise in 12 V BLDC fan systems. The integrated power stage reduces external component count compared to discrete solutions. Verify compatibility with the host controller's I2C bus speed and voltage levels. Consider the 10-SOIC footprint constraints for PCB layout optimization.

Motor Drivers, Controllers Part Context

The AMT49400 belongs to Allegro's QuietMotion series of code-free FOC sensorless BLDC motor controllers. This family targets high-reliability, low-noise applications where traditional trapezoidal drivers generate excessive acoustic interference. The part represents a shift toward fully integrated sinusoidal drive solutions for consumer electronics.

Motor Drivers, Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate other Allegro BLDC drivers or competitor sensorless FOC ICs based on pinout compatibility and electrical specifications if direct substitution is required.