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Texas Instruments DRV8805DW
- Part No.:
- DRV8805DW
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
DRV8805DW.pdf
- Description:
- IC MTR DRV UNIPLR 8.2-60V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:582
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Product details
Overview
DRV8805DW from Texas Instruments is a quad-channel protected low-side driver IC for unipolar stepper motor control, integrating indexer logic, overcurrent protection, and clamp diodes. It operates from 8.2 V to 60 V, delivers up to 1.5 A per channel (single-channel on, 25°C), and uses a 20-pin SOIC package with center pins fused to the die pad for enhanced thermal performance in gaming machines and industrial motion systems.
For engineers reviewing the DRV8805DW datasheet, DRV8805DW pinout, DRV8805DW application, or DRV8805DW equivalent, this page provides verified specifications, SOIC-20 pin mapping, step/direction interface behavior, thermal derating data, and validated alternative options for unipolar stepper motor driver selection.
Technical Context
The DRV8805DW implements a hardware-based indexer with three programmable stepping modes (full-step, half-step, wave drive) controlled via SM0/SM1 inputs, and uses internal NMOS FETs with 0.5 Ω typical RDS(on) at 25°C. Its fault management includes overcurrent protection with 3.5 µs deglitch time, thermal shutdown at 150°C, and UVLO at 8.2 V.
It features open-drain nFAULT and nHOME outputs, Schmitt-trigger logic inputs with internal pulldowns, and a dedicated VCLAMP pin enabling external Zener clamping for fast current decay. The SOIC-20 package integrates internal fusion of center pins to the exposed die pad, improving thermal resistance to 67.7°C/W (RθJA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 8.2 V to 60 V - supports wide-range unipolar stepper motors without external regulation |
| Max Output Current (SOIC) | 1.5 A per channel (1 ch on, 25°C); 800 mA per channel (4 ch on, 25°C) - defines continuous drive capability under thermal limits |
| RDS(on) | 0.5 Ω (typ, 25°C) - determines conduction loss and thermal rise during static load operation |
| Step Frequency | 250 kHz max - sets upper limit for microstepping resolution and motor speed in full/half-step modes |
| OCP Trip Level | 2.3 A to 3.8 A - hard current limit preventing FET damage during winding short or stall |
| Thermal Shutdown | 150°C (die temp) - automatic disable/recovery cycle protects against sustained overload or poor heatsinking |
| UVLO Threshold | 8.2 V rising - prevents erratic operation during brown-out or startup sequencing |
Pinout & Package
DRV8805DW uses a thermally enhanced 20-pin SOIC (DW) package (12.80 mm × 7.50 mm) with center pins (pins 5–7 and 14–16) internally fused to the die pad for improved heat transfer. PCB layout requires connection of these GND pins to a large copper area with multiple vias.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | Low-side NMOS output | Sinks current to GND for unipolar motor windings; each rated for 1.5-A peak (SOIC) |
| VM | Main power supply input | 8.2–60 V motor supply; powers gate drivers and internal regulators |
| VCLAMP | Clamp diode return node | Connects to VM or Zener diode to enable >VM voltage clamping for faster current decay |
| STEP / DIR / SM0 / SM1 | Digital control inputs | Edge-triggered STEP, level-controlled DIR, and mode-select SM0/SM1 with internal pulldowns |
| nENBL | Active-low enable | Disables all outputs when high; does not reset indexer logic |
| RESET | Active-high logic reset | Resets indexer to home state; overrides STEP/DIR during assertion |
| nFAULT | Open-drain fault indicator | Pulled low during OCP, TSD, or UVLO; requires external pullup |
| nHOME | Open-drain home position flag | Indicates indexer's reference position; weak internal pullup enables direct MCU sensing |
Key Features
| Feature | Design Value |
|---|---|
| Integrated indexer logic | Hardware-based step/direction translator supporting full-, half-, and wave-step modes without firmware overhead |
| Four protected low-side drivers | Each with overcurrent detection, thermal shutdown, and integrated clamp diodes tied to VCLAMP |
| Thermally enhanced SOIC | Center GND pins fused to die pad reduce RθJA to 67.7°C/W - enables higher current in space-constrained layouts |
| Programmable step modes | SM0/SM1 pins select excitation pattern; no software configuration required for motor tuning |
| Fault reporting & recovery | nFAULT pin signals faults; auto-retry (1.2 ms) and RESET-triggered clear simplify system-level error handling |
Applications
| Gaming Machine Motion Control | Industrial Packaging Conveyor |
|---|---|
|
Use Scenario: Precise positioning of prize wheels, payout arms, and interactive displays in slot machines and arcade cabinets. IC Role / Device Role / Timing Role: DRV8805DW acts as the stepper motor driver and indexer, translating MCU-generated STEP/DIR pulses into phase-sequenced low-side switching for unipolar motors. Use Value: Enables deterministic 1.8° step resolution and rapid direction reversal without CPU intervention, meeting strict timing requirements for real-time game mechanics. |
Use Scenario: Indexing of product carriers, label applicators, and sorting gates in automated packaging lines. IC Role / Device Role / Timing Role: DRV8805DW drives unipolar stepper motors controlling mechanical actuators, using hardware indexer to maintain synchronization across multiple axes. Use Value: Integrated OCP and thermal shutdown prevent downtime during jam events, while SOIC-20 thermal design sustains 800-mA four-channel operation in enclosed enclosures. |
| Medical Lab Automation | Office Equipment Paper Handling |
|
Use Scenario: Sample tray positioning, reagent dispenser actuation, and slide scanner stage movement in diagnostic analyzers. IC Role / Device Role / Timing Role: DRV8805DW serves as the motor interface between microcontroller and unipolar stepper, managing current limiting and fault signaling per IEC 62304 safety requirements. Use Value: UVLO and nFAULT reporting support fail-safe shutdown sequences; 8.2–60 V range accommodates diverse lab power architectures. |
Use Scenario: Duplex printing path control, document feeder advancement, and stapler actuation in multifunction printers. IC Role / Device Role / Timing Role: DRV8805DW controls compact unipolar steppers in paper transport subsystems, leveraging built-in half-step mode for smoother motion and reduced vibration. Use Value: Hardware indexer eliminates need for precise MCU timing loops; 1.5-A single-channel rating handles peak torque during paper jams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unipolar stepper motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB6600HG | Higher voltage (40 V max), 3.5-A peak output, but requires external current sense resistors and separate indexer logic | Used in CNC and larger industrial steppers; lacks integrated step-mode translation | Select when higher current or external control flexibility is needed; adds BOM cost and layout complexity |
| LV8711T | SOIC-24 package, 1.2-A continuous per channel, integrated current regulation (not fixed OCP), no VCLAMP pin | Targeted at battery-powered devices; lower thermal performance (RθJA = 75°C/W) | Prefer for portable equipment with tight power budgets; avoid where fast current decay or high ambient temps exist |
Compared with TB6600HG and LV8711T, the DRV8805DW uniquely combines hardware indexer, VCLAMP-enabled clamping, and SOIC-20 thermal optimization - making it optimal for cost-sensitive, space-constrained unipolar stepper systems requiring deterministic motion and robust fault handling.
Availability
DRV8805DW is available at Aetrix Electronics and suitable for gaming machines, industrial packaging conveyors, and medical lab automation requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for DRV8805DW 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 company specializing in analog and embedded processing solutions, with leadership in motor control, power management, and industrial interface ICs.
The DRV8805DW belongs to TI's precision motor driver portfolio, designed specifically for cost-effective, thermally robust unipolar stepper control in commercial and industrial equipment where integration, reliability, and ease of use are critical.
FAQ
What is the maximum continuous output current per channel for DRV8805DW at 25°C?
The DRV8805DW supports up to 1.5 A per channel when only one output is active, and 800 mA per channel when all four channels operate simultaneously - both values measured at 25°C ambient temperature on standard FR-4 PCBs. Derating is required above 25°C per the RθJA = 67.7°C/W thermal metric.
Does DRV8805DW require external current-sense resistors?
No, the DRV8805DW uses internal analog current-limit circuitry for overcurrent protection and does not require external sense resistors. Its OCP trip level is fixed at 2.3–3.8 A per channel, with a 3.5 µs deglitch time to reject transient spikes - simplifying BOM and layout versus current-regulated alternatives.
How does the VCLAMP pin function in DRV8805DW?
The VCLAMP pin connects to the cathodes of the integrated clamp diodes. It must be tied to VM or to a Zener diode referenced to VM to absorb inductive kickback energy during motor winding turn-off. This configuration enables faster current decay than simple VM clamping, improving step response in unipolar stepper applications.
Can DRV8805DW drive bipolar stepper motors?
No, the DRV8805DW is designed exclusively for unipolar stepper motors. It contains four low-side drivers only and lacks H-bridge topology or high-side drive capability required for bipolar winding control. For bipolar motors, TI recommends DRV8825 or DRV8880 instead.
What happens to DRV8805DW outputs during a thermal shutdown event?
When the DRV8805DW die temperature exceeds 150°C, all four OUTx outputs are immediately disabled, the nFAULT pin is driven low, and STEP input is ignored. Operation automatically resumes once the junction temperature falls below the hysteresis threshold (~130°C), without requiring external reset - ensuring self-recovery in transient overload conditions.
DRV8805DW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Motor Type - Stepper:
- Unipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Low Side (4)
- Interface:
- Logic
- Technology:
- Power MOSFET
- Step Resolution:
- 1, 1/2
- Applications:
- General Purpose
- Current - Output:
- 800mA
- Voltage - Supply:
- 8.2V ~ 60V
- Voltage - Load:
- 8.2V ~ 60V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
DRV8805DW FAQ
1.How can I place an order for DRV8805DW through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8805DW 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 DRV8805DW reliable?
The price and inventory of DRV8805DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8805DW is usually 5 days.
3.What payment methods are accepted for DRV8805DW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8805DW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8805DW?
DRV8805DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8805DW 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 DRV8805DW?
For technical support, including DRV8805DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8805DW requirements.
6.How does Aetrix verify that DRV8805DW is sourced from the original manufacturer or authorized distributors?
All DRV8805DW 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 DRV8805DW meets industry standards.
7.What is the process for return or replacement of DRV8805DW?
All DRV8805DW units undergo pre-shipment inspection (PSI). If there is an issue with DRV8805DW, 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 DRV8805DW part is unused and in its original packaging.
Return procedure for DRV8805DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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