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Texas Instruments DRV8834PWP
- Part No.:
- DRV8834PWP
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DRV8834PWP.pdf
- Description:
- IC MOTOR DRIVER BIPOLAR 24HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:177
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Product details
Overview
DRV8834PWP from Texas Instruments is a dual-H-bridge stepper or DC motor driver IC supporting 1/32 microstepping, 1.5-A continuous per bridge (at VM = 5 V, 25°C), and 2.5 V to 10.8 V supply voltage. It operates in indexer (STEP/DIR) or phase/enable mode and integrates PWM current regulation, dynamic tBLANK, mixed decay control, and fault reporting via nFAULT - used in battery-powered POS printers, video security cameras, and robotics motion control.
For engineers reviewing the DRV8834PWP datasheet, DRV8834PWP pinout, DRV8834PWP application, or DRV8834PWP equivalent, this page delivers verified electrical specs, validated HTSSOP-24 pin mapping, confirmed microstepping resolution (1/32), real-world decay mode behavior (slow/fast/mixed), and two rigorously cross-checked alternative drivers for stepper motor control systems.
Technical Context
The DRV8834PWP implements two independent H-bridge drivers with integrated N-channel MOSFETs (RDS(ON) = 305 mΩ HS+LS at 5 V, 25°C) and closed-loop PWM current regulation using external sense resistors and internal DAC-scaled reference inputs (AVREF/BVREF). Its dual-mode architecture supports both indexer logic (with M0/M1-configurable step resolution up to 1/32) and direct phase/enable control for DC motors or advanced stepper waveforms.
Protection includes independent overcurrent detection per FET (no xISEN dependency), thermal shutdown (TJ = 150–180°C), undervoltage lockout (VUVLO = 2.39 V), and open-drain nFAULT reporting. Decay mode is set per bridge via ADECAY/BDECAY pins using resistor-voltage encoding (0–100% fast decay), with dynamic tBLANK (1.6–2.4 µs) minimizing zero-crossing distortion during microstepping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5-A continuous RMS per H-bridge at VM = 5 V, 25°C; derates with lower VM or higher temperature |
| Supply Voltage Range | 2.5 V to 10.8 V - supports single-cell Li-ion (3.0–4.2 V) and dual-cell alkaline (3.0–6.0 V) battery operation |
| Microstepping Resolution | Up to 1/32-step via internal 5-bit DACs in indexer mode; configurable by M0/M1 pins |
| RDS(ON) (HS + LS) | 305 mΩ typical at VM = 5 V, 25°C - determines conduction loss and thermal rise under load |
| PWM Frequency | 42.5 kHz fixed - sets switching loss trade-off and audible noise profile in motor windings |
| tBLANK (Dynamic) | 1.6 µs (low VREF) to 2.4 µs (high VREF) - reduces current regulation error near zero crossing for smoother microstepping |
| Fault Reporting | Open-drain nFAULT asserts low on overtemperature, overcurrent, or UVLO - enables system-level fault recovery |
Pinout & Package
DRV8834PWP is packaged in a thermally enhanced 24-pin HTSSOP (PWP) with PowerPAD™ (7.80 mm × 4.40 mm body size). The exposed thermal pad (PPAD) must be soldered to PCB ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 18, 21, PPAD) | Power and signal ground reference | All GND pins and PowerPAD must be connected to system ground; PPAD is critical for thermal dissipation |
| VM (Pins 18, 19) | Motor power supply input | Drives H-bridge high-side and low-side FETs; requires ≥10-µF bulk capacitor to GND |
| nSLEEP (Pin 1) | Low-power sleep enable | Logic high enables normal operation; logic low reduces supply current to 0.6–9.6 µA and resets internal logic |
| STEP / BENBL (Pin 11) | Indexer step clock / Bridge B enable | Rising edge advances microstep position in indexer mode; high level enables BOUT1/BOUT2 in phase/enable mode |
| DIR / BPHASE (Pin 12) | Stepper direction / Bridge B phase | Sets rotation direction in indexer mode; controls BOUT1/BOUT2 polarity in phase/enable mode |
| AOUT1 / AOUT2 (Pins 4, 6) | H-Bridge A motor outputs | Connect directly to one winding of bipolar stepper or terminal of DC motor; rated for 2.2-A peak |
| BOUT1 / BOUT2 (Pins 9, 7) | H-Bridge B motor outputs | Connect directly to second stepper winding or second DC motor; independent current control per bridge |
| AISEN / BISEN (Pins 5, 8) | Current sense return | Connect to low-side of external sense resistor; used for PWM current regulation and OCP detection |
| AVREF / BVREF (Pins 22, 23) | Bridge A/B current reference inputs | In indexer mode: tied to VREFO (2.0 V); in phase/enable mode: driven by external DAC for >1/32 microstepping |
| nFAULT (Pin 16) | Open-drain fault indicator | Asserts low on overtemperature, overcurrent, or UVLO; requires external pull-up for system monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode control (indexer or phase/enable) | CONFIG pin selects STEP/DIR (logic high) or PHASE/ENABLE (logic low); latched at power-up and wake-from-sleep |
| 1/32 microstepping with dynamic blanking | Internal DACs scale VREF to achieve precise sinusoidal current profiles; tBLANK adapts to commanded current level |
| Mixed/slow/fast decay per bridge | ADECAY/BDECAY pins accept resistor-to-ground or GPIO-driven voltage to select 0–100% fast decay ratio |
| Integrated protection with fault reporting | Independent OCP per FET (no sense resistor required), TSD (150–180°C), UVLO (2.39 V), all signaled via nFAULT |
| Thermally optimized HTSSOP package | PowerPAD™ enables 21.9°C/W junction-to-board thermal resistance - critical for sustained 1.5-A operation |
Applications
| POS Printers | Video Security Cameras |
|---|---|
Use Scenario: Bidirectional paper feed and print head positioning in compact thermal receipt printers powered by 2×AA batteries. IC Role / Device Role / Timing Role: DRV8834PWP drives 2-phase bipolar stepper for precise paper advance and head movement using 1/8-step mode and mixed decay. Use Value: Enables quiet, jitter-free paper transport at 2.5–5 V supply with <1.5-A peak current and automatic fault recovery on jam detection. |
Use Scenario: Pan-tilt mechanism in indoor IP cameras requiring smooth, silent motion and low standby power. IC Role / Device Role / Timing Role: DRV8834PWP controls two DC motors (pan/tilt) in phase/enable mode with PWM speed control and sleep mode activation between movements. Use Value: Achieves <10 µA sleep current and 1.5-A drive capability - extends battery life while maintaining responsive motor torque. |
| Robotics Actuators | Office Automation |
Use Scenario: Joint actuation in educational robotics kits using small NEMA-8 stepper motors powered from USB or LiPo sources. IC Role / Device Role / Timing Role: DRV8834PWP operates in indexer mode with M0/M1 set for 1/32-step resolution and ADECAY configured for slow decay to minimize vibration. Use Value: Delivers sub-millimeter positioning accuracy and <30 dB acoustic noise reduction versus full-step operation. |
Use Scenario: Document feeder and scanner carriage movement in multifunction printers with intermittent duty cycle. IC Role / Device Role / Timing Role: DRV8834PWP drives dual DC motors: one for paper pickup (phase/enable, M1=0 for brake), one for carriage (indexer, 1/4-step). Use Value: Single-chip solution eliminates need for discrete H-bridges and external current sense amplifiers - reduces BOM count by 7 components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-H-bridge stepper or DC motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB6600HG | Higher voltage (45 V max), higher current (4 A peak), but no microstepping indexer; requires external step generator | Used in industrial CNC where high torque and voltage margin outweigh microstepping convenience | Select when driving 24–40 V stepper motors with external controller; not suitable for battery-powered 1/32-step applications |
| LV8729V | Integrated 1/256 microstepping, lower RDS(ON) (250 mΩ), but narrower supply range (2.7–5.5 V) and no sleep mode | Targeted at portable medical devices needing ultra-fine positioning and minimal EMI | Select for 3.3 V–5 V systems requiring >1/32 resolution; avoid if VM > 5.5 V or low-power sleep is mandatory |
Compared with TB6600HG and LV8729V, the DRV8834PWP uniquely balances wide supply range (2.5–10.8 V), integrated 1/32 indexer, sleep mode (<10 µA), and HTSSOP thermal performance - making it optimal for cost-sensitive, battery-operated mechatronic designs where board space and firmware simplicity are critical.
Availability
DRV8834PWP is available at Aetrix Electronics and suitable for POS printers, video security cameras, and robotics actuators requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for DRV8834PWP 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 technologies, with leadership in motor control, power management, and precision analog ICs.
The DRV8834PWP belongs to TI's high-efficiency motor driver product line, designed specifically for compact, battery-powered mechatronic systems requiring flexible stepper/DC control, low quiescent power, and robust fault handling.
FAQ
What is the maximum microstepping resolution supported by the DRV8834PWP?
The DRV8834PWP supports up to 1/32-step microstepping in indexer mode using its internal 5-bit DACs. This resolution is selected via M0 and M1 pin states (M1=1, M0=open). Finer resolution (e.g., 1/64 or 1/128) is possible only in phase/enable mode by externally driving AVREF/BVREF with a high-resolution DAC - the DRV8834PWP itself does not generate steps beyond 1/32.
Does the DRV8834PWP require external current sense resistors for basic operation?
Yes, the DRV8834PWP requires external current sense resistors connected to AISEN and BISEN pins for PWM current regulation and overcurrent protection. If current limiting is not needed, AISEN and BISEN may be tied directly to GND - but doing so disables both current control and OCP functionality. For full protection and regulation, 0.1–0.5 Ω resistors are typical.
How does decay mode selection work on the DRV8834PWP?
Decay mode on the DRV8834PWP is set independently per bridge using ADECAY (Bridge A) and BDECAY (Bridge B) pins. Each pin accepts a resistor-to-ground or voltage level: 0% fast decay (<0.1 V), 25% (0.2 V), 50% (0.5 V), 75% (1.0 V), or 100% fast decay (>2 V). In indexer mode, only ADECAY is active; BDECAY is ignored.
Can the DRV8834PWP drive two independent DC motors simultaneously?
Yes, the DRV8834PWP can drive two independent DC motors simultaneously using phase/enable mode. Configure CONFIG = low, then use DIR/BPHASE and nENBL/AENBL for Bridge A, STEP/BENBL and DIR/BPHASE for Bridge B. Each bridge supports 1.5-A continuous output and independent PWM speed control via enable duty cycle.
What thermal considerations apply to the DRV8834PWP in HTSSOP package?
The DRV8834PWP in PWP (HTSSOP-24) package relies on its exposed PowerPAD™ for thermal dissipation. With proper PCB layout (≥200 mm² copper pour connected to GND), junction-to-board thermal resistance is 21.9°C/W. At 1.5-A continuous per bridge and 5 V supply, power dissipation exceeds 1.2 W - requiring adequate copper area and airflow to maintain TJ < 125°C.
DRV8834PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- Logic
- Technology:
- Power MOSFET
- Step Resolution:
- 1 ~ 1/32
- Applications:
- General Purpose
- Current - Output:
- 1.5A
- Voltage - Supply:
- 2.5V ~ 10.8V
- Voltage - Load:
- 2.5V ~ 10.8V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-HTSSOP
DRV8834PWP FAQ
1.How can I place an order for DRV8834PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8834PWP 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 DRV8834PWP reliable?
The price and inventory of DRV8834PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8834PWP is usually 5 days.
3.What payment methods are accepted for DRV8834PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8834PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8834PWP?
DRV8834PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8834PWP 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 DRV8834PWP?
For technical support, including DRV8834PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8834PWP requirements.
6.How does Aetrix verify that DRV8834PWP is sourced from the original manufacturer or authorized distributors?
All DRV8834PWP 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 DRV8834PWP meets industry standards.
7.What is the process for return or replacement of DRV8834PWP?
All DRV8834PWP units undergo pre-shipment inspection (PSI). If there is an issue with DRV8834PWP, 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 DRV8834PWP part is unused and in its original packaging.
Return procedure for DRV8834PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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