Overview
The DRV8872DDAR is a 3.6-A brushed DC motor driver produced by Texas Instruments. This device is designed to drive one brushed DC motor, one winding of a stepper motor, or other loads. It features a wide operating voltage range of 6.5 V to 45 V and supports PWM control for motor speed regulation. The DRV8872DDAR is packaged in an 8-pin HSOP (DDA) package with a PowerPAD, which helps in heat dissipation. It is suitable for various applications including printers, appliances, and industrial equipment due to its integrated protection features and low-power sleep mode.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 6.5 to 45 | V |
| Peak Output Current | 3.6 | A |
| RDS(on) (HS + LS) | 565 | mΩ |
| RMS Output Current | 2 | A |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | HSOIC (DDA) | |
| Number of Pins | 8 | |
| Package Size | 4.9 x 6 mm | mm |
Key Features
- H-Bridge Motor Driver: Consists of four N-channel MOSFETs to control motors bidirectionally.
- PWM Control Interface: Supports pulse-width modulation for motor speed control.
- Integrated Current Regulation: Limits motor current to a predefined maximum using an external sense resistor.
- Low-Power Sleep Mode: Entered by bringing both inputs low, reducing power consumption.
- Protection Features: Includes VM undervoltage lockout, overcurrent protection, thermal shutdown, and fault reporting.
- Small Package and Footprint: 8-pin HSOP with PowerPAD for efficient heat dissipation.
Applications
The DRV8872DDAR is typically used in various applications such as:
- Printers
- Appliances
- Industrial Equipment
- Other mechatronic applications
Q & A
- What is the operating voltage range of the DRV8872DDAR?
The operating voltage range is 6.5 V to 45 V. - What is the peak output current of the DRV8872DDAR?
The peak output current is 3.6 A. - What type of control interface does the DRV8872DDAR support?
The DRV8872DDAR supports PWM (pulse-width modulation) control. - How does the DRV8872DDAR regulate motor current?
The device limits motor current using an internal reference voltage and an external sense resistor. - What protection features are integrated into the DRV8872DDAR?
The device includes VM undervoltage lockout, overcurrent protection, thermal shutdown, and fault reporting. - How does the DRV8872DDAR enter sleep mode?
Sleep mode is entered by bringing both inputs low. - What is the package type and size of the DRV8872DDAR?
The package type is HSOIC (DDA) with a size of 4.9 x 6 mm. - What are the typical applications of the DRV8872DDAR?
Typical applications include printers, appliances, industrial equipment, and other mechatronic applications. - How does the DRV8872DDAR handle thermal management?
The device features a PowerPAD for efficient heat dissipation and includes thermal shutdown protection. - What is the significance of the nFAULT pin in the DRV8872DDAR?
The nFAULT pin is used to report fault conditions by pulling low when a fault occurs.
