DRV8842PWPR

Overview

The DRV8842PWPR is a single H-bridge current-controlled motor driver manufactured by Texas Instruments. It operates within an 8.2V to 45V supply voltage range and delivers up to 5A peak or 3.5A RMS output current at 24V and 25°C with proper heatsinking. The device integrates N-channel power MOSFETs configured as a half-bridge, featuring a thermally enhanced 28-pin HTSSOP package with PowerPAD. Key electrical specifications include a typical low MOSFET RDS(on) of 0.2Ω (HS + LS) at 24V and 25°C, and a built-in 3.3V reference output.

Feature Summary

• Integrates a single H-bridge driver for controlling one DC motor, one stepper motor coil, or other actuators.
• Provides five-bit winding current control allowing up to 32 distinct current levels.
• Includes internal shutdown functions for overcurrent protection, short-circuit protection, undervoltage lockout, and overtemperature protection.
• Features an industry-standard PWM control interface and a fault status indication pin.

Applications

• Printers
• Scanners
• Office automation machines
• Gaming machines
• Factory automation systems

Procurement Notes

Verify the specific suffix 'PWP' corresponds to the 28-pin HTSSOP PowerPAD package when sourcing. Confirm the 'R' suffix indicates tape and reel packaging if required for automated assembly. Ensure thermal management design accounts for the specified RMS current limits at the target operating temperature and voltage conditions.

Selection Notes

Select this component for applications requiring a single high-current channel with integrated current regulation. It is suitable for designs needing a compact solution without external sense resistors due to internal current control. Consider the 28-pin footprint and thermal requirements compared to lower-current alternatives in the DRV88xx family.

Part Context

This part belongs to the DRV884x series of motor drivers from Texas Instruments, designed for office automation and gaming applications. It complements other variants like the DRV8840 and DRV8841, offering a balance of current capability and integration for driving brushed DC motors or stepper coils in space-constrained environments.

Replacement Considerations

The DRV8874PWPR is listed as a substitute that eliminates the need for external sense resistors, potentially reducing BOM cost and space. Verify compatibility regarding package dimensions and thermal performance before substitution.

FAQ

What is the maximum continuous output current for the DRV8842PWPR?

The device can supply up to 3.5A RMS output current with proper heatsinking at 24V and 25°C.

Does the DRV8842PWPR require external sense resistors for current control?

No, it features internal five-bit winding current control that allows up to 32 current levels without external sense resistors.