DRV8251DDAR

Overview

The DRV8251DDAR is a motor driver manufactured by Texas Instruments, belonging to the DRV8251 series. It functions as a 50-V, 4.1-A H-bridge motor driver with integrated current regulation. The device operates within a supply voltage range of 4.5 V to 48 V. It utilizes an N-channel H-bridge architecture supported by a charge pump for efficient 100% duty cycle driving. The component is housed in an 8-pin HSOP package featuring a PowerPAD thermal pad, measuring 4.9 mm by 6.0 mm. It supports logic inputs of 1.8 V, 3.3 V, and 5 V.

Feature Summary

• Integrates an N-channel H-bridge with a charge pump to enable high-efficiency 100% duty cycle operation.
• Features internal current mirror architecture for current detection and regulation without external shunt resistors.
• Includes low-power sleep mode achieving ultra-low static current consumption when most internal circuits are off.
• Provides comprehensive protection mechanisms including undervoltage lockout, latch overcurrent protection, and thermal shutdown.

Applications

• Brushed DC motor control in space-constrained embedded systems
• Industrial automation equipment requiring precise current regulation
• Consumer appliances utilizing small form-factor motor drivers

Procurement Notes

Verify the specific suffix 'DDAR' corresponds to the reel packaging format intended for surface-mount assembly. Confirm that the operating voltage requirements align with the 4.5 V to 48 V specification. Ensure thermal management strategies account for the PowerPAD design to maintain junction temperature within safe limits during peak load conditions.

Selection Notes

Select this component when a compact solution with integrated current sensing is required to reduce bill-of-materials complexity. It is suitable for designs needing support for multiple logic voltage levels while maintaining a wide input voltage range. Consider the trade-off between the integrated current mirror accuracy and applications requiring external shunt resistor precision.

Part Context

This part belongs to the DRV8251 family, which offers scalable options regarding RDS(on), voltage ratings, and current detection methods. The series includes variants with either external shunt resistors or integrated current mirrors, allowing designers to choose based on cost and board space constraints while maintaining pin-to-pin compatibility where applicable.

Replacement Considerations

DRV8251ADDAR