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.
| Part Number | Package Type | Temperature | RoHS Compliant |
Part Composition / RoHS Data |
Comments | Samples | Check Stock |
|---|---|---|---|---|---|---|---|
| APEK49406GES-01-T | DEMO BOARD | -20°C to 85°C | No | -- | Contact your local sales rep |
Check Distributor Stock |
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| APEK49406GLP-01-T | DEMO BOARD | -20°C to 85°C | No | -- | Contact your local sales rep |
Check Distributor Stock |
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| AMT49406GESSR | 24-lead QFN | -40°C to 105°C | Yes | View Data | Contact your local sales rep |
Check Distributor Stock |
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| AMT49406GLPTR | 24-lead TSSOP | -40°C to 105°C | Yes | View Data | Contact your local sales rep |
Check Distributor 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.
24-contact QFN with exposed thermal pad 4mm x 4mm x 0.75mm (ES package)
24-lead TSSOP with exposed thermal pad (LP package)
Allegro Customer Portal: Gain access to Allegro product software and design tools.
Innovative Motor Control: Setting a New Standard for BLDC Motor Drive Technology
Accurate Startup Techniques in a Sensorless Field-Oriented-Control BLDC (Sinusoidal) Motor Driver
