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Home » Products » Motor Driver and Interface ICs » Brushless DC Drivers » AMT49400
AMT49400: Integrated Sensorless FOC BLDC Driver
The AMT49400 is an advanced 3-phase, sensorless, brushless DC (BLDC) motor driver with integrated
power MOSFETs.
A minimal application circuit can be achieved with only two external components due to device’s high level of
integration, which includes control algorithm, analog circuit, and power stage.
A field-oriented control (FOC) algorithm is fully integrated to achieve the best efficiency and acoustic noise
performance. EEPROM programmability is included to optimize motor startup performance.
The motor speed is controlled by applying a duty cycle command to the PWM input. A simple I2C interface is
provided for setting motor-rated voltage, rated current, rated speed, resistance, and startup profiles. The I2C
interface is also used for on/off control, speed control, and speed readback.
The AMT49400 is available in a very small 10-lead SOIC with exposed pad, (suffix LK).
Featured Applications:
All-in-One PC & Computer Fans
Exhaust & Graphical Cooling Fans
Home Appliance Fans & Pumps
DATASHEETS
Contact Marketing for Datasheet
SAMPLE & BUY
Arrow Electronics (Distributor,
Allegro & Sanken Semiconductors)
25 Hub Drive
Melville, NY 11747
Phone: 1-800-777-2776 for local
distributor
Web: www.arrow.com
If this is not your local
representative, find your local sales
rep here.
Coding-free sensorless field-oriented control (FOC)
Standby mode current less than 10 μA
Quiet and quick startup
Only two external components for minimal application circuit
PWM speed input, FG speed output
Lock detection
Soft-on soft-off (SOSO)
Optional closed-loop speed control
Configurable current limit
Windmill and reverse windmill operation
Lock detection
Short-circuit protection (OCP)
1 2 3
Part Number Specifications and Availability
Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data Comments Samples Check
Distributor Stock
APEK49400GLK-01-T DEMO BOARD -20°C to 85°C No -- New Contact your
local sales rep Check Stock
AMT49400GLKATR 10-lead SOIC -40°C to 105°C Yes View Data New Contact your
local sales rep Check Stock
Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s
product can reasonably be expected to cause bodily harm.
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