- Design Center
- About Allegro
The AMT49406 is a 3-phase, sensorless, brushless DC (BLDC) motor driver (gate driver) which can operate from 5.5 to 50 V—Allegro’s first QuietMotion solution. The AMT49406 is ideal for ceiling fans, pedestal fans, bathroom exhaust fans and home appliance fans and pumps.
A field-oriented control (FOC) algorithm is fully integrated to achieve the best efficiency and acoustic noise performance. The device optimizes the motor startup performance in a stationary condition, a windmill condition, and even in a reverse windmill condition.
Motor speed is controlled through analog, PWM, or CLOCK input. Closed-loop speed control is optional, and RPM-to-clock frequency ratio is programmable.
A simple I2C interface is provided for setting motor-rated voltage, rated current, rated speed, resistance, and startup profiles.
The AMT49406 is available in a 24-contact 4 mm × 4 mm QFN with exposed thermal pad (suffix ES) and a 24-lead TSSOP with exposed thermal pad (suffix LP). These packages are lead (Pb) free, with 100% matte-tin leadframe plating.
Astrorep Inc. (Allegro and Sanken Semiconductors,
Sanken Power Supplies)
700 Veterans Memorial Hwy
Hauppauge, NY 11788
If this is not your local representative, find your local sales rep here.
|Part Number||Package Type||Temperature||RoHS
|Part Composition /
|AMT49406GESSR||24-lead QFN||-40°C to 105°C||Yes||View Data||New||Contact your
local sales rep
|AMT49406GLPTR||24-lead TSSOP||-40°C to 105°C||Yes||View Data||New||Contact your
local sales rep