Texas Instruments DRV8885RHRR

Overview

DRV8885RHRR from Texas Instruments is a 1.5-A full-scale, 1.0-A rms bipolar stepper motor driver with integrated current sense, 1/16 microstepping, STEP/DIR interface, and 8–37-V operation-designed for precision motion control in compact industrial automation systems.

For engineers reviewing the DRV8885RHRR datasheet, DRV8885RHRR pinout, DRV8885RHRR application, or DRV8885RHRR equivalent, this page delivers verified electrical specs, thermal performance at 25°C and 125°C, decay-mode configuration options (slow/mixed), RDS(ON) = 0.86 Ω (HS+LS), and sleep-mode current of 20 µA-key selection criteria for printer, scanner, and robotic actuator designs.

Technical Context

The DRV8885RHRR integrates dual N-channel H-bridge drivers, a microstepping indexer supporting full-step to 1/16-step modes (including non-circular 1/2-step), and adaptive blanking time scaling with output current. It uses fixed off-time PWM chopping with configurable decay via DECAY pin.

Current regulation relies on integrated current sense (±6.25% full-scale accuracy), eliminating external sense resistors. Torque scaling is enabled via tri-level TRQ pin, while protection includes VM UVLO (7.8 V fall / 8.0 V rise), OCP (2.3 A peak), and thermal shutdown (150°C).

Key Specifications

Pinout & Package

DRV8885RHRR is packaged in a 28-pin WQFN (5.50 mm × 3.5 mm) with exposed thermal pad, optimized for high-power density and thermal performance (RθJA = 33.6°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar stepper motor driver applications.

Compared with DRV8885RHRR, DRV8886APWPR trades thermal efficiency and torque-scaling flexibility for smaller footprint, while TMC2209-LA adds intelligence and noise reduction at the cost of external components and configuration overhead-making DRV8885RHRR optimal for cost-sensitive, thermally managed industrial motion where STEP/DIR simplicity is prioritized.

Availability

DRV8885RHRR is available at Aetrix Electronics and suitable for multi-function printers, 3D printer motion control, and video security camera pan-tilt mechanisms requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for DRV8885RHRR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

DRV8885RHRR belongs to TI's high-voltage stepper motor driver product line, engineered for robust, low-BOM-count motion control in factory automation, office equipment, and surveillance systems where reliability and thermal efficiency are critical.

FAQ

What is the maximum microstepping resolution supported by the DRV8885RHRR?

The DRV8885RHRR supports up to 1/16 microstepping, configured via M0 and M1 pins. This resolution enables precise positioning and reduced motor vibration in applications like 3D printers and scanners. The device also offers non-circular 1/2-step mode for enhanced torque at higher speeds. All microstepping modes are executed internally by the indexer-no external waveform generation is needed. DRV8885RHRR maintains ±6.25% current accuracy across all step resolutions when RREF is properly set.

Does the DRV8885RHRR require external current-sense resistors?

No, the DRV8885RHRR does not require external current-sense resistors. It features fully integrated current sense and regulation circuitry, achieving ±6.25% full-scale current accuracy without dissipating power in external components. This integration reduces board area, BOM cost, and thermal design complexity. Current magnitude is set via the RREF pin using a single resistor to ground, and scaled dynamically via the TRQ pin-both functions implemented entirely within DRV8885RHRR.

What thermal performance can be expected from the DRV8885RHRR in its WQFN package?

The DRV8885RHRR in the 28-pin WQFN (RHR) package has a junction-to-ambient thermal resistance (RθJA) of 33.6°C/W under standard JEDEC conditions. Its junction-to-board (RθJB) is 12.7°C/W, indicating strong thermal coupling to the PCB. At 24 V and TA = 25°C with adequate copper pour, it sustains 1.0-A rms output continuously. Derating is required above 125°C ambient or with limited heatsinking-DRV8885RHRR includes thermal shutdown at 150°C and 20°C hysteresis for safe recovery.

How does the DRV8885RHRR implement decay mode control?

The DRV8885RHRR implements decay mode control via the quad-level DECAY pin, which accepts four distinct voltage thresholds (0.07–3.76 V) to select slow decay, mixed decay, or slow/mixed decay-where slow decay is used on increasing steps and mixed on decreasing steps. This configuration directly affects current recirculation path and torque ripple. Decay mode can be changed dynamically during operation without disrupting the indexer state. DRV8885RHRR does not support fast decay or user-defined decay timing; all decay behavior is internally managed based on DECAY pin voltage.

What protection features are built into the DRV8885RHRR?

The DRV8885RHRR integrates VM undervoltage lockout (UVLO, 7.8 V fall / 8.0 V rise), charge pump undervoltage (CPUV), overcurrent protection (OCP, 2.3-A peak trip), thermal shutdown (TSD, 150°C), and fault reporting via open-drain nFAULT pin. All protections are autonomous-no host intervention required. Fault conditions pull nFAULT low; recovery is automatic after fault removal and timeout (e.g., 1.6-ms OCP retry). These features ensure robust operation in unattended industrial environments where DRV8885RHRR drives critical motion subsystems.