DRV777PWR

Overview

The DRV777PWR is a 7-bit integrated motor and relay driver manufactured by Texas Instruments. It features seven low-output-impedance drivers designed to minimize on-chip power dissipation. The device supports a 1.8V to 5V CMOS logic input interface, ensuring compatibility with standard digital control signals. It accommodates output pull-up voltages up to 20V, enabling the driving of various relays and motors operating at 1.8V, 3V, 5V, and 12V. The component operates within an extended temperature range from -40°C to 125°C.

Feature Summary

• Integrates seven low-output-impedance drivers to reduce internal power loss
• Compatible with 1.8V to 5V CMOS logic input interfaces
• Supports wide voltage ranges for stepper motors and DC loads

Applications

• Driving 3V, 5V, and 12V relays
• Controlling 1.8V relays
• Unipolar motor driver applications

Procurement Notes

Verify the package type matches the required PCB footprint, specifically the 16-TSSOP configuration. Confirm that the operating temperature range meets the environmental requirements of the target system. Ensure the logic input voltage levels align with the controlling microcontroller or processor outputs to guarantee reliable signal interfacing without additional level shifting.

Selection Notes

Select this component when a compact solution for multiple low-power motor or relay channels is required. It is suitable for designs needing direct CMOS logic interface without external buffer circuits. Consider the thermal performance implications of the seven parallel drivers if high duty cycles are expected. Verify that the 20V maximum output rating exceeds the load supply voltage in all operational scenarios.

Part Context

This part belongs to the DRV777 family of integrated motor and relay drivers from Texas Instruments. It is categorized under Motor / Motion / Ignition Controllers & Drivers. The PWR suffix indicates the specific plastic small-outline package variant. It serves as a specialized interface between low-voltage logic controllers and higher-voltage electromechanical loads.

Replacement Considerations

Consult official Texas Instruments documentation for verified cross-reference part numbers. Do not assume functional equivalence with other motor drivers based solely on pin count or package similarity. Verify electrical specifications against the original design requirements before substitution.