Overview
The DRV8231DDAR from Texas Instruments is an integrated motor driver designed for driving brushed DC motors. This device features an N-channel H-bridge configuration, a charge pump, current regulation, and comprehensive protection circuitry. It operates within a supply voltage range of 4.5-V to 33-V and is capable of handling high output currents up to 3.7-A peak. The DRV8231DDAR is available in small package options, including 8-pin WSON and HSOP with PowerPAD™, making it suitable for a variety of applications where space is limited.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Operating Supply Voltage (VM) | 4.5 V to 33 V | - | - | - | V |
| Output Current Capability | - | - | 3.7 A | - | A |
| RDS(on) | - | - | 600 mΩ | - | mΩ |
| Logic Input Voltage | - | 1.8 V, 3.3 V, 5 V | - | - | V |
| Operating Temperature Range | -40°C to 150°C | - | - | - | °C |
| Sleep Mode Current (IVMQ) | VVM = 24 V, IN1 = IN2 = 0, TJ = 25°C | 1 | - | - | µA |
| Active Mode Current (IVM) | VVM = 24 V, IN1 = IN2 = 1 | - | 3 | 4 | mA |
Key Features
- N-channel H-bridge brushed DC motor driver
- 4.5-V to 33-V operating supply voltage range
- High output current capability: 3.7-A peak
- PWM control interface with frequencies up to 200 kHz
- Supports 1.8-V, 3.3-V, and 5-V logic inputs
- Integrated current regulation using an external shunt resistor
- Low-power sleep mode with ultra-low quiescent current draw (<1 µA at VVM = 24 V, TJ = 25°C)
- Small package options: 8-Pin WSON and HSOP with PowerPAD™
- Integrated protection features: VM undervoltage lockout (UVLO), overcurrent protection (OCP), and thermal shutdown (TSD)
Applications
- Printers
- Vacuum robots
- Washers and dryers
- Coffee machines
- POS printers
- Electricity meters
- ATMs (Automated Teller Machines)
- Ventilators
- Surgical equipment
- Electronic hospital beds and bed control systems
- Fitness machines
Q & A
- What is the operating supply voltage range of the DRV8231DDAR?
The DRV8231DDAR operates within a supply voltage range of 4.5-V to 33-V. - What is the maximum output current capability of the DRV8231DDAR?
The DRV8231DDAR can handle up to 3.7-A peak output current. - What types of logic input voltages does the DRV8231DDAR support?
The DRV8231DDAR supports 1.8-V, 3.3-V, and 5-V logic inputs. - How does the DRV8231DDAR regulate current?
The DRV8231DDAR regulates current using an external shunt resistor on the ISEN pin and an analog input VREF. - What are the integrated protection features of the DRV8231DDAR?
The DRV8231DDAR includes VM undervoltage lockout (UVLO), overcurrent protection (OCP), and thermal shutdown (TSD). - What is the sleep mode current draw of the DRV8231DDAR?
In sleep mode, the DRV8231DDAR draws less than 1 µA at VVM = 24 V and TJ = 25°C. - What are the package options for the DRV8231DDAR?
The DRV8231DDAR is available in 8-Pin WSON and HSOP packages with PowerPAD™. - How is motor speed controlled in the DRV8231DDAR?
Motor speed can be controlled using pulse-width modulation (PWM) at frequencies up to 200 kHz. - Can the DRV8231DDAR detect motor stall conditions?
Yes, the DRV8231DDAR can detect motor stall conditions using a current-sense amplifier (CSA) to monitor the voltage on the ISEN pin. - What is the operating temperature range of the DRV8231DDAR?
The DRV8231DDAR operates within a temperature range of -40°C to 150°C.
