A3931KJP-T
Temperature range of -40°C to 150°CA3931KJP-T
Temperature range of -40°C to 150°C
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Manufacturer Part # : A3931KJP-T
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Package/Case: LQFP-48
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Brand: Allegro MicroSystems
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Product Categories : Motor Drivers, Controllers
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Series : A3931
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A3931KJP-T DataSheet

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A3931KJP-T Details
The A3931KJP-T is a dual full-bridge PWM motor driver IC from Allegro Microsystems, designed for driving DC brush motors in automotive and industrial applications. This driver IC features integrated MOSFETs for high efficiency and performance, making it suitable for use in power-hungry motor control systems.
Pinout
- 1 (OUT1A): Output 1A
- 2 (OUT1B): Output 1B
- 3 (OUT2A): Output 2A
- 4 (OUT2B): Output 2B
- 5 (VCC): Positive Power Supply
- 6 (GND): Ground
(Tip: For detailed pinout information, please refer to the corresponding datasheet.)
Key Features
- Dual Full-Bridge Configuration: Allows independent control of two brush motors.
- Integrated MOSFETs: Ensures high efficiency and reduced board space.
- PWM Control: Supports pulse-width modulation for speed and direction control.
- Overcurrent Protection: Built-in protection circuitry for motor and driver safety.
- Wide Operating Voltage Range: Compatible with a wide range of power supply voltages.
Application
- Automotive Systems: Ideal for driving DC brush motors in automotive actuator and HVAC systems.
- Industrial Automation: Used in industrial machinery and robotics for precise motor control.
- Robotics: Suitable for robot motor control applications requiring high efficiency and performance.
Where to Use
The A3931KJP-T is suitable for applications that require reliable and efficient motor control, especially in automotive and industrial systems. It is designed to deliver high performance while minimizing board space and power consumption.
How to Use
Connect the A3931KJP-T to your motor system by wiring the output pins to the motor terminals and providing the necessary power supply connections to VCC and GND. Use PWM signals to control motor speed and direction. Implement appropriate overcurrent protection measures to ensure safe operation. For detailed usage instructions, refer to the datasheet.
Application Circuit
The application circuit diagram for the A3931KJP-T illustrates how to integrate the motor driver into your system. It shows the connections for motor outputs, power supply, and control signals to enable proper motor driving functionality.
(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)
Equivalents
- A3930KJP-T: A similar dual full-bridge motor driver with slightly different features and specifications.
- DRV8843: An alternative motor driver IC offering comparable performance in motor control applications.
Complementary
The A3931KJP-T can be paired with the A3932KJP-T, a related motor driver IC that provides additional features such as current sensing and diagnostic capabilities for enhanced motor control and monitoring.
When selecting complementary motor drivers, ensure compatibility and alignment with your motor control system requirements for optimal performance.
Frequently Asked Questions
Q: What is the maximum operating voltage of the A3931KJP-T?
A: The A3931KJP-T can operate within a wide voltage range to accommodate various motor system requirements. Refer to the datasheet for specific voltage limits and recommendations.
Q: Does the A3931KJP-T require external overcurrent protection?
A: The A3931KJP-T is equipped with built-in overcurrent protection circuitry. However, additional external protection measures may be implemented based on the application's needs.
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
ECCN (US) | EAR99 | Part Status ! | Obsolete |
HTS | 8542330001 | SVHC | Yes |
Automotive | Yes | Type | Motor Driver |
Motor Type | Brushless DC Motor | Minimum Operating Supply Voltage (V) | 5.5 |
Maximum Operating Supply Voltage (V) | 50 | Minimum Operating Temperature (°C) | -40 |
Maximum Operating Temperature (°C) | 150 | Packaging ! | Tray |
Mounting | Surface Mount | Package Height | 1.4 |
Package Width | 7 | Package Length | 7 |
PCB changed | 48 | Standard Package Name | QFP |
Supplier Package | LQFP EP | Pin Count ! | 48 |
Lead Shape | Gull-wing |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is A3931KJP-T?
The A3931KJP-T is a full-bridge PWM motor driver IC designed by Allegro Microsystems. It is specifically designed for driving DC brush motors and other inductive loads in automotive and industrial applications.
How Does A3931KJP-T Work?
The A3931KJP-T works by utilizing pulse-width modulation (PWM) to drive the connected motor or inductive load. It features a full-bridge output stage to provide bidirectional control of the load, enabling precise speed and direction control of the motor. The device includes protection features such as overcurrent and thermal shutdown to ensure safe operation.
How Many Pins does A3931KJP-T have and What are the Functions of the Pinout Configuration?
The A3931KJP-T is housed in a 16-pin TSSOP (Thin Shrink Small Outline Package) package. The pinout configuration includes:
- VBB: High-Side Power Supply Voltage Pin.
- VDD: Logic Power Supply Voltage Pin.
- GND: Ground Pin.
- INA, INB: Logic Inputs for Bridge A.
- INC, IND: Logic Inputs for Bridge B.
- RT, CT: External Timing Components for Regulating PWM Switching Frequency.
- OUTA, OUTB: Outputs for Bridge A.
- OUTC, OUTD: Outputs for Bridge B.
- OCF, TSD: Fault Outputs for Overcurrent and Thermal Shutdown.
What are the Pros and Cons of A3931KJP-T?
Pros:
- High-Side Drive Capability: Allows for driving high-side switches, enabling efficient full-bridge motor control.
- Protection Features: Incorporates overcurrent and thermal shutdown protection for safe operation in harsh environments.
- Compact Package: The 16-pin TSSOP package offers a space-efficient solution for motor driver applications.
Cons:
- Application Specific: The A3931KJP-T is specifically designed for motor and inductive load control, limiting its versatility for other applications.
- Complexity: May require careful consideration of external components and system-level design for optimal performance.
Are There Any Equivalents/Alternatives to A3931KJP-T for Recommendation?
The A3932 from Allegro Microsystems is a similar full-bridge PWM motor driver IC that may serve as an alternative to the A3931KJP-T.
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