DRV8231ADSGR

Overview

The DRV8231ADSGR 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 capability of 3.7 A. The device features an N-channel MOSFET half-bridge architecture with a typical RDS(ON) of 600 mΩ, supported by an internal charge pump for efficient 100% duty-cycle driving. It includes an integrated IPROPI current mirror for sensing and regulation, eliminating the need for external shunt resistors. Logic inputs support 1.8 V, 3.3 V, and 5 V levels, while PWM control interfaces allow speeds up to 200 kHz. The component is housed in an 8-pin WSON package measuring 2.0 mm x 2.0 mm.

Feature Summary

• Integrated N-channel H-bridge with charge pump for high-efficiency motor driving
• Built-in IPROPI current mirror architecture for stall detection and regulation without external shunts
• Ultra-low power sleep mode achieving quiescent current below 1 µA
• Comprehensive protection including UVLO, auto-retry overcurrent protection, and thermal shutdown

Applications

• Automated teller machines (ATMs)
• Surgical equipment and ventilators
• Electronic hospital beds and bed controls
• Vacuum robots

Procurement Notes

Verify that the ordering suffix 'DSGR' corresponds to the 8-pin WSON (2.0mm x 2.0mm) package variant when sourcing. Confirm the specific revision level matches your design requirements, as TI may update documentation or pinout configurations across manufacturing lots. Ensure compatibility with your PCB footprint for the PowerPAD thermal pad connection to maintain optimal heat dissipation performance during operation.

Selection Notes

Select this component when designing systems requiring a compact solution for brushed DC motors with integrated current sensing capabilities. The DRV8231ADSGR is suitable for applications where board space is limited due to its small WSON footprint. It is ideal for designs needing to avoid external current-sense resistors to reduce cost and complexity, provided the load current does not exceed the 3.7 A peak rating. Consider the 33 V maximum supply limit when choosing against higher-voltage variants like the DRV8251.

Part Context

The DRV8231ADSGR belongs to the DRV8231/A family of 33 V H-bridge motor drivers from Texas Instruments. This series offers pin-to-pin scalability with other models such as the DRV8231, DRV8251, and DRV8870, which vary in RDS(ON), voltage ratings, and current sensing methods. The family allows designers to minimize design changes across different product lines while supporting various loads and supply rails through consistent interface specifications.

Replacement Considerations

The DRV8231A is the direct functional equivalent within the same package. For alternative solutions, consider the DRV8231 (shunt-based sensing) or the DRV8251A (higher voltage, mirror-based sensing). Verify pin compatibility and thermal requirements before substituting.