Overview
The DRV8832DGQR, produced by Texas Instruments, is a low-voltage motor driver IC designed for battery-powered applications. It provides an integrated motor driver solution for controlling brushed DC motors, stepper motors, and other loads such as solenoids. The device features a single H-bridge driver, enabling it to drive one DC motor or one winding of a stepper motor. The DRV8832 operates on power supply voltages ranging from 2.75 V to 6.8 V and can supply up to 1 A of DC/RMS or peak output current with sufficient PCB heatsinking.
The DRV8832 incorporates PWM voltage regulation to maintain constant motor speed over varying battery voltages, ensuring long battery life. It also includes internal protection functions such as overcurrent protection, short-circuit protection, undervoltage lockout, and overtemperature protection. Additionally, the device has a current limit function and a fault output pin to signal fault conditions to a host processor.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage Range | 2.75 V to 6.8 V | V |
| Maximum DC/RMS or Peak Drive Current | 1 A | A |
| Sleep Mode Current | 300 nA (Typical) | nA |
| Internal PWM Frequency | 44.5 kHz | kHz |
| Overcurrent Protection Trip Level | 1.3 A to 3 A | A |
| Thermal Shutdown Temperature | 150°C to 180°C | °C |
| Package Types | MSOP PowerPAD, VSON | |
| Package Size | 3-mm × 3-mm | mm |
| Number of Pins | 10 |
Key Features
- H-Bridge Motor Driver: Configured with N-channel and P-channel power MOSFETs to drive motor windings.
- PWM Voltage Regulation: Maintains constant motor speed over varying supply voltages to ensure long battery life.
- Current Limit Function: Regulates motor current during start-up or stall conditions.
- Internal Protection Functions: Includes overcurrent protection, short-circuit protection, undervoltage lockout, and overtemperature protection.
- Fault Output Pin: Signals fault conditions to a host processor.
- Low MOSFET On-Resistance: HS + LS 450 mΩ.
- Reference Voltage Output: Provides a built-in voltage reference output.
- Eco-Friendly Packaging: RoHS compliant and free of Sb/Br.
Applications
- Battery-Powered Toys: Ideal for controlling motors in battery-powered toys.
- Printers: Suitable for motion control in printers.
- Robotics: Used in robotic applications requiring low-voltage motor control.
- Cameras and Phones: Can be used in small actuator applications within cameras and phones.
- Small Actuators, Pumps, and Other Loads: Applicable to various small actuator and pump applications.
Q & A
- What is the operating supply voltage range of the DRV8832?
The DRV8832 operates on power supply voltages from 2.75 V to 6.8 V.
- What is the maximum drive current of the DRV8832?
The DRV8832 can supply up to 1 A of DC/RMS or peak output current.
- What type of voltage regulation does the DRV8832 use?
The DRV8832 uses PWM voltage regulation to maintain constant motor speed over varying supply voltages.
- What are the internal protection functions of the DRV8832?
The DRV8832 includes overcurrent protection, short-circuit protection, undervoltage lockout, and overtemperature protection.
- How does the DRV8832 signal fault conditions?
The DRV8832 signals fault conditions through a fault output pin.
- What are the package types and sizes available for the DRV8832?
The DRV8832 is available in MSOP PowerPAD and VSON packages, both measuring 3-mm × 3-mm.
- What is the typical sleep mode current of the DRV8832?
The typical sleep mode current of the DRV8832 is 300 nA.
- What is the internal PWM frequency of the DRV8832?
The internal PWM frequency of the DRV8832 is 44.5 kHz.
- What are some common applications of the DRV8832?
The DRV8832 is commonly used in battery-powered toys, printers, robotics, cameras, phones, and other small actuator applications.
- Is the DRV8832 eco-friendly?
Yes, the DRV8832 is RoHS compliant and free of Sb/Br, making it an eco-friendly option.
