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Texas Instruments DRV8886RHRT
- Part No.:
- DRV8886RHRT
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
DRV8886RHRT.pdf
- Description:
- IC MOTOR DRVR BIPOLAR 5.3V 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,905
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Product details
Overview
DRV8886RHRT from Texas Instruments is a 2-A full-scale, 8–37-V PWM microstepping stepper motor driver with integrated current sensing, 1/16 µstep resolution, slow/mixed decay control, and STEP/DIR interface - used in precision motion control for 3D printers, video security cameras, and factory automation systems.
For engineers reviewing the DRV8886RHRT datasheet, DRV8886RHRT pinout, DRV8886RHRT application, or DRV8886RHRT equivalent, this page delivers verified technical context, exact package mapping (28-pin WQFN), confirmed RDS(ON) = 290–346 mΩ (HS) + 260–320 mΩ (LS), ±6.25% current accuracy, and validated alternative part selection guidance.
Technical Context
The DRV8886RHRT integrates dual N-channel H-bridge drivers, a microstepping indexer supporting full-step to 1/16 µstep (including non-circular 1/2-step), and fixed off-time PWM current regulation with adaptive blanking time scaling per output current level. It uses internal MOSFET-based current sensing - eliminating external sense resistors - and supports tri-level M0/M1 and quad-level DECAY inputs for mode and decay configuration.
It features independent AVDD/DVDD regulators (5 V and 3.3 V), open-drain nFAULT reporting, low-power sleep mode (20 µA), and comprehensive protection including VM UVLO (7.2–7.8 V), charge pump undervoltage detection, overcurrent trip at 3 A, and thermal shutdown at 150°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2-A full-scale / 1.4-A rms per bridge - defines maximum continuous sinusoidal winding current under thermal limits at 24 V, 25°C. |
| Supply Voltage Range | 8–37 V - supports wide industrial motor bus voltages; includes UVLO at 7.2–7.8 V with 200-mV hysteresis. |
| RDS(ON) | 290–346 mΩ (HS) + 260–320 mΩ (LS) at 24 V, 25°C - determines conduction loss and thermal dissipation in H-bridge switches. |
| Microstepping Resolution | 1/16 µstep - enables high positional resolution without external controller complexity; includes non-circular 1/2-step for torque optimization. |
| Current Sense Accuracy | ±6.25% full-scale - achieved via integrated current mirror architecture, removing need for external sense resistors and associated power loss. |
| Decay Modes | Slow, slow-mixed, mixed - configurable via DECAY pin voltage levels; slow-mixed applies slow decay on rising steps and mixed on falling steps. |
| Sleep Current | 20 µA at 25°C - enables ultra-low standby power in battery- or energy-sensitive motion systems. |
Pinout & Package
DRV8886RHRT is housed in a 28-pin WQFN package (5.50 mm × 3.5 mm) with exposed thermal pad for enhanced heat dissipation. Pin functions are electrically identical to the HTSSOP variant but mapped to a different physical layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCP | Charge pump output | Drives internal high-side gate bias; requires 0.22-µF ceramic cap to VM for stable operation. |
| CPH / CPL | Charge pump switching nodes | Form flying capacitor network; require 0.022-µF X5R/X7R cap between them for efficient voltage doubling. |
| AOUT1 / AOUT2 / BOUT1 / BOUT2 | H-bridge motor outputs | Drive bipolar stepper windings; support bidirectional current flow with dead time (200 ns) and fast switching (100 ns rise/fall). |
| STEP / DIR / ENABLE / nSLEEP | Digital control inputs | Standard logic-level interfaces (VIH = 1.6–5.3 V); all include internal pulldown resistors (~65–100 kΩ) for default-safe states. |
| M0 / M1 / TRQ / DECAY | Tri-/quad-level configuration pins | Set microstep mode (M0/M1), torque scaling (TRQ), and decay behavior (DECAY) using resistor dividers or direct logic levels. |
| RREF | Analog current reference input | Accepts 18–132-kΩ resistor to GND; sets full-scale current with ±6.25% accuracy across 0–2-A range. |
| nFAULT | Open-drain fault indicator | Pulled low on UVLO, OCP, TSD, or CPUV; requires external pullup (≥4.7 kΩ) to DVDD or VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated current sensing | Eliminates two external sense resistors, reducing PCB area, BOM cost, and power loss - enabled by MOSFET RDS(ON)-based current mirroring. |
| Adaptive blanking time | Automatically scales minimum drive time with output current level to suppress zero-crossing distortion during low-current microsteps. |
| Torque DAC (TRQ pin) | Digitally scales output current in three levels (0%, ~71%, 100%) without changing RREF resistor - enables dynamic torque adjustment for power savings. |
| Non-circular half-step mode | Delivers higher torque at elevated RPM versus standard half-step by optimizing current waveform symmetry and phase alignment. |
| Thermal-aware current rating | 1.4-A rms rating reflects real-world thermal limits (RθJA = 33.2°C/W); actual usable current depends on PCB copper area, airflow, and ambient temperature. |
Applications
| 3D Printer Motion Control | Video Security Camera Pan/Tilt |
|---|---|
Use Scenario: Precise layer deposition and gantry positioning in fused deposition modeling (FDM) printers. IC Role / Device Role / Timing Role: Stepper motor driver executing 1/16 µstep indexing with adaptive blanking to minimize vibration-induced layer artifacts. Use Value: Enables sub-0.01-mm positioning resolution and smooth low-speed motion without external microstepping controller overhead. |
Use Scenario: Silent, jitter-free pan/tilt movement in indoor/outdoor IP cameras requiring stealth and reliability. IC Role / Device Role / Timing Role: Bipolar stepper driver with torque DAC and sleep mode - reduces audible noise and standby power during idle periods. Use Value: Achieves <20 µA quiescent current in sleep and ±6.25% current accuracy for repeatable angular positioning across temperature. |
| Factory Automation Actuators | Multi-function Printer Paper Path |
Use Scenario: Linear actuators and robotic joint control in PLC-connected industrial equipment. IC Role / Device Role / Timing Role: Motor driver with robust protection (UVLO, OCP, TSD) and nFAULT reporting for integration into safety-monitored motion subsystems. Use Value: Supports 37-V supply headroom and 3-A peak current for acceleration surges while maintaining fault visibility via open-drain signaling. |
Use Scenario: Paper feed, registration, and duplex transport in office multifunction devices. IC Role / Device Role / Timing Role: Dual-H-bridge stepper driver with STEP/DIR interface and integrated indexer - simplifies MCU firmware and reduces timing-critical ISR load. Use Value: Eliminates external current sense resistors and supports 100-kHz step rates for high-throughput paper handling without current-loop instability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stepper motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8889NPRGFR | Same 2-A full-scale rating, 8–37-V range, and 1/16 µstep capability; adds SPI interface and diagnostics (VGS monitoring, stall detect), but requires PCB redesign for SPI routing and firmware integration. | Better suited for closed-loop or predictive maintenance systems where real-time fault telemetry is required. | Select DRV8889NPRGFR when diagnostic visibility and programmable decay tuning outweigh layout simplicity. |
| STSPIN820TR | Lower 1.5-A rms rating, 7–45-V range, integrated 3.3-V LDO, but lacks torque DAC and non-circular stepping; uses different pinout and requires external sense resistors. | Targeted at cost-sensitive, lower-torque applications like small document scanners or consumer robotics. | Choose STSPIN820TR only if supply voltage exceeds 37 V or system-level BOM cost reduction justifies added sense resistor footprint and reduced feature set. |
Compared with DRV8886RHRT, DRV8889NPRGFR offers richer diagnostics at the cost of interface complexity, while STSPIN820TR trades integration and precision for wider voltage range and lower unit cost - neither is pin-compatible, and both require layout and firmware adaptation.
Availability
DRV8886RHRT is available at Aetrix Electronics and suitable for 3D printer motion control, video security camera pan/tilt mechanisms, and factory automation actuators requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for DRV8886RHRT 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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in motor control IC design and industrial-grade reliability validation.
The DRV8886 product line delivers highly integrated, thermally robust stepper drivers for industrial and consumer motion systems - designed to reduce system cost, simplify layout, and eliminate external current-sense components without sacrificing precision or protection.
FAQ
What is the maximum step rate supported by the DRV8886RHRT?
The DRV8886RHRT supports a maximum STEP input frequency of 100 kHz under recommended operating conditions. While the STEP pin can accept pulses up to 500 kHz, system bandwidth - limited by motor inductance, supply voltage, and thermal constraints - typically restricts practical step rates to ≤100 kHz. The DRV8886RHRT's 1.2-µs propagation delay from STEP to current change ensures timing predictability in high-speed microstepping applications.
Does the DRV8886RHRT require external current sense resistors?
No, the DRV8886RHRT does not require external current sense resistors. It implements an integrated current-sense architecture using internal MOSFET RDS(ON) matching and current mirroring, achieving ±6.25% full-scale accuracy. This eliminates PCB space, power loss, and BOM cost associated with traditional shunt resistors - a key differentiator confirmed in TI's SLVSDA4C datasheet Section 7.3.1.
How is microstepping mode configured on the DRV8886RHRT?
Microstepping mode on the DRV8886RHRT is set using the M0 and M1 pins: M1=0/M0=0 → full-step; M1=0/M0=1 → 1/16-step; M1=1/M0=0 → 1/2-step; M1=1/M0=1 → 1/4-step; M1=0/M0=Z → 1/8-step; M1=1/M0=Z → non-circular 1/2-step. All configurations use internal pulldown resistors, and mode changes take effect at the next STEP rising edge - except when entering/exiting non-circular mode, which occurs immediately.
What thermal performance can be expected from the DRV8886RHRT in a typical PCB layout?
In a standard 4-layer PCB with 2 oz copper and 1-in² thermal pad exposure, the DRV8886RHRT achieves a junction-to-ambient thermal resistance (RθJA) of 33.2°C/W. At 2-A full-scale load and 24-V supply, power dissipation is ~1.2 W - resulting in ~40°C junction rise above ambient. Derating to 1.4-A rms maintains safe operation below 125°C junction temperature, consistent with its specified thermal shutdown threshold of 150°C.
Can the DRV8886RHRT drive unipolar stepper motors?
No, the DRV8886RHRT is designed exclusively for bipolar stepper motors. Its dual H-bridge topology provides bidirectional current control per winding, which is incompatible with unipolar motor wiring (center-tapped coils requiring single-direction drive per phase). Attempting to drive a unipolar motor would result in incorrect commutation and potential device faulting due to improper current paths and missing center-tap termination.
DRV8886RHRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- -
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- Logic
- Technology:
- Power MOSFET
- Step Resolution:
- 1 ~ 1/16
- Applications:
- General Purpose
- Current - Output:
- 2A
- Voltage - Supply:
- 0V ~ 5.3V
- Voltage - Load:
- 8V ~ 37V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-WQFN (5.5x3.5)
DRV8886RHRT FAQ
1.How can I place an order for DRV8886RHRT through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8886RHRT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DRV8886RHRT reliable?
The price and inventory of DRV8886RHRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8886RHRT is usually 5 days.
3.What payment methods are accepted for DRV8886RHRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8886RHRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8886RHRT?
DRV8886RHRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8886RHRT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DRV8886RHRT?
For technical support, including DRV8886RHRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8886RHRT requirements.
6.How does Aetrix verify that DRV8886RHRT is sourced from the original manufacturer or authorized distributors?
All DRV8886RHRT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DRV8886RHRT meets industry standards.
7.What is the process for return or replacement of DRV8886RHRT?
All DRV8886RHRT units undergo pre-shipment inspection (PSI). If there is an issue with DRV8886RHRT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DRV8886RHRT part is unused and in its original packaging.
Return procedure for DRV8886RHRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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