- Pinout Diagram
- Footprint Diagram
ALLEGRO A4931METTR-T
| Manufacturer | |
| MPN | A4931METTR-T |
| LCSC Part # | C89724 |
| Packaging | WQFN-28-EP(5x5) |
| Customer # | |
| Key Attributes | 3-Phase Brushless DC Motor Pre-Driver |
| Datasheet |  ALLEGRO A4931METTR-T |
Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Motor Drivers, Controllers | |
| Manufacturer | ALLEGRO | |
| Packaging | WQFN-28-EP(5x5) | |
| Drive Type | Three Phase | |
| Features | Interleaved conduction protection;Motor stall protection;Motor speed indication | |
| Technology | - | |
| Operating temperature | -20℃~+105℃ | |
| Voltage - Supply | - | |
| Quiescent Current(Iq) | 3mA | |
| Output Current | - | |
| Peak Current | 30mA | |
| Number of Half Bridges | - | |
| RDS(on) | - | |
| Interface | - |
Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 1500 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
The A4931 is a complete 3 - phase brushless DC motor pre - driver. The device is capable of driving a wide range of N - channel power MOSFETs and can support motor supply voltages up to 30 V. Commutation logic is determined by three Hall - element inputs spaced at 120°. Other features include fixed off - time pulse - width modulation (PWM) current control for limiting inrush current, locked - rotor protection with adjustable delay, thermal shutdown, overvoltage monitor, and synchronous rectification. Internal synchronous rectification reduces power dissipation by turning on the appropriate MOSFETs during current decay, thus shorting the body diode with the low RDS(on) MOSFET. Overvoltage protection disables synchronous rectification when the motor pumps the supply voltage beyond the overvoltage threshold during current recirculation. The A4931 offers enable, direction, and brake inputs that can control current using either phase or enable chopping. Logic outputs FG1 and FG2 can be used to accurately measure motor rotation. Output signals toggle state during Hall transitions, providing an accurate speed output to a microcontroller or speed control circuit. The A4931 is supplied in a 5 mm× 5 mm, 28 - terminal QFN package with exposed thermal pad. This small footprint package is lead (Pb) free with 100% matte - tin leadframe plating.
Features
- Drives 6 N - channel MOSFETs
- Synchronous rectification for low power dissipation
- Internal UVLO and thermal shutdown circuitry
- Hall element inputs
- PWM current limiting
- Dead time protection
- FG outputs
- Standby mode
- Lock detect protection
- Overvoltage protection
| Qty | Unit Price | Total Amount |
|---|---|---|
| 1+ | $ 1.2972 | $ 1.30 |
| 10+ | $ 1.0758 | $ 10.76 |
| 30+ | $ 0.9554 | $ 28.66 |
| 100+ | $ 0.8187 | $ 81.87 |
| 500+ | $ 0.6787 | $ 339.35 |
| 1,500+ | $ 0.6511 | $ 976.65 |
Standard Packaging1500/Full Reel | ||
Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Motor Drivers, Controllers | |
| Manufacturer | ALLEGRO | |
| Packaging | WQFN-28-EP(5x5) | |
| Drive Type | Three Phase | |
| Features | Interleaved conduction protection;Motor stall protection;Motor speed indication | |
| Technology | - | |
| Operating temperature | -20℃~+105℃ | |
| Voltage - Supply | - | |
| Quiescent Current(Iq) | 3mA | |
| Output Current | - | |
| Peak Current | 30mA | |
| Number of Half Bridges | - | |
| RDS(on) | - | |
| Interface | - |
Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 1500 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
The A4931 is a complete 3 - phase brushless DC motor pre - driver. The device is capable of driving a wide range of N - channel power MOSFETs and can support motor supply voltages up to 30 V. Commutation logic is determined by three Hall - element inputs spaced at 120°. Other features include fixed off - time pulse - width modulation (PWM) current control for limiting inrush current, locked - rotor protection with adjustable delay, thermal shutdown, overvoltage monitor, and synchronous rectification. Internal synchronous rectification reduces power dissipation by turning on the appropriate MOSFETs during current decay, thus shorting the body diode with the low RDS(on) MOSFET. Overvoltage protection disables synchronous rectification when the motor pumps the supply voltage beyond the overvoltage threshold during current recirculation. The A4931 offers enable, direction, and brake inputs that can control current using either phase or enable chopping. Logic outputs FG1 and FG2 can be used to accurately measure motor rotation. Output signals toggle state during Hall transitions, providing an accurate speed output to a microcontroller or speed control circuit. The A4931 is supplied in a 5 mm× 5 mm, 28 - terminal QFN package with exposed thermal pad. This small footprint package is lead (Pb) free with 100% matte - tin leadframe plating.
Features
- Drives 6 N - channel MOSFETs
- Synchronous rectification for low power dissipation
- Internal UVLO and thermal shutdown circuitry
- Hall element inputs
- PWM current limiting
- Dead time protection
- FG outputs
- Standby mode
- Lock detect protection
- Overvoltage protection
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | |
| USHTS | |
| TARIC | |
| CAHTS | |
| BRHTS | |
| INHTS | |
| MXHTS |
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | |
| USHTS | |
| TARIC |
| Type | Details |
|---|---|
| CAHTS | |
| BRHTS | |
| INHTS | |
| MXHTS | |