DRV8231DDAR

Overview

The DRV8231DDAR is a Texas Instruments integrated H-bridge motor driver designed for brushed DC motors. It operates within a supply voltage range of 4.5 V to 33 V and delivers a peak output current of 3.7 A. The device features an internal charge pump to support N-channel MOSFETs at 100% duty cycle. It includes an IPROPI current mirror architecture for sensing, eliminating the need for external shunt resistors. The component supports PWM frequencies up to 200 kHz and accepts logic inputs compatible with 1.8 V, 3.3 V, and 5 V systems.

Feature Summary

• Integrates an N-channel H-bridge with a charge pump for efficient high-side drive
• Features internal IPROPI current mirror for stall detection and regulation without external shunts
• Supports low-power sleep mode with ultra-low quiescent current consumption
• Includes comprehensive protection against undervoltage, overcurrent, and thermal overload

Applications

• Brushed DC motor speed control in consumer appliances
• Automotive window and seat actuator systems
• Industrial automation equipment requiring compact motor drivers
• Battery-powered devices needing efficient power management

Procurement Notes

Verify the specific suffix DDAR indicates the tape-and-reel packaging variant when sourcing. Confirm the component status as active or obsolete through official Texas Instruments channels prior to design finalization. Ensure the selected package matches the PCB footprint requirements for the SOIC-8 PowerPAD configuration. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Selection Notes

Select this component for applications requiring integrated current sensing without external shunt resistors. It is suitable for systems operating between 4.5 V and 33 V with peak currents up to 3.7 A. Consider the SOIC-8 PowerPAD package for thermal performance in space-constrained layouts. Verify that the microcontroller interface supports the required PWM frequency and logic voltage levels.

Part Context

The DRV8231DDAR belongs to the DRV8231 family of H-bridge drivers from Texas Instruments. This series offers scalable options with varying RDS(on) and voltage ratings. The DRV8231A variant utilizes an integrated current mirror, while other models may use shunt-based sensing. All variants share pin-to-pin compatibility for easy design upgrades.

Replacement Considerations

Official pin-compatible alternatives include the DRV8231 and DRV8231A. Higher voltage options such as the DRV8251 and DRV8251A are available for systems exceeding 33 V. Ensure the replacement maintains the required current rating and sensing method (shunt vs. mirror) for the application.