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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

Texas Instruments DRV8834RGET

Name: DRV8834RGET
Brand: Texas Instruments
SKU: DRV8834RGET
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DRV8834RGET

Manufacturer:: Texas Instruments

Category:: Motor Drivers, Controllers

Package:: 24-VFQFN Exposed Pad

Datasheet:: DRV8834RGET.pdf

Description:: IC MTR DRV BIPLR 2.5-10.8V 24QFN

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Product details

Overview

DRV8834RGET 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 range. It operates in indexer (STEP/DIR) or phase/enable mode and integrates PWM current regulation, dynamic blanking, and mixed decay control for precision motion control in compact mechatronic systems.

For engineers reviewing the DRV8834RGET datasheet, DRV8834RGET pinout, DRV8834RGET application, or DRV8834RGET equivalent, this page delivers verified specifications, validated pin functions, confirmed microstepping behavior up to 1/32-step, real-world decay mode configuration via ADECAY/BDECAY pins, and accurate thermal derating guidance for battery-powered robotics and POS printers.

Technical Context

The DRV8834RGET implements two independent H-bridge drivers with integrated N-channel MOSFETs (305-mΩ HS+LS R_DS(ON) at 5 V), each featuring fixed-frequency 42.5-kHz PWM current regulation, programmable decay modes (slow/fast/mixed), and dynamic t_BLANK adjustment to minimize zero-crossing distortion during microstepping.

It supports dual operational modes: indexer mode (latched CONFIG = high) enabling STEP/DIR control with internal 5-bit DAC-based 1/32 microstepping, and phase/enable mode (CONFIG = low) allowing direct PHASE/ENABLE control of each bridge with external reference inputs (AVREF/BVREF) for >1/32 microstepping or DC motor speed/torque regulation.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	1.5-A continuous per H-bridge (RMS or DC) 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), 5-V rail, and 9-V battery systems without LDO
Microstepping Resolution	Up to 1/32-step via internal indexer logic (M0/M1-configured); finer resolution possible using external DACs on AVREF/BVREF
R_DS(ON) (HS + LS)	305 mΩ typical at VM = 5 V, 25°C - enables ≥1.5-A drive with <1.2-W conduction loss per bridge
PWM Frequency	42.5 kHz fixed - avoids audible noise while maintaining fast current loop response for smooth torque delivery
t_BLANK Control	Dynamic blanking (1.6–2.4 µs) - reduces minimum duty cycle near zero current, improving sinusoidal fidelity in microstepping
Fault Protection	Integrated OCP (2.2-A peak trip), UVLO (2.39-V threshold), and thermal shutdown (150°C TJ) with open-drain nFAULT output

Pinout & Package

The DRV8834RGET is packaged in a 24-pin VQFN (RGE) package measuring 4.00 mm × 4.00 mm with exposed PowerPAD™ for enhanced thermal dissipation. Pin numbering follows TI's standard top-view layout with GND (PPAD) and all ground pins tied to PCB thermal plane.

Pin/Terminal	Circuit Role	Design Meaning
VM (Pins 15,16)	Motor power supply input	Accepts 2.5–10.8 V; requires ≥10-µF bulk capacitor to GND for stable current delivery during PWM switching
AOUT1/AOUT2 (Pins 1,3)	H-Bridge A output terminals	Drive one winding of bipolar stepper or terminal of DC motor; rated for 1.5-A continuous, 2.2-A peak
BOUT1/BOUT2 (Pins 6,4)	H-Bridge B output terminals	Drive second stepper winding or second DC motor; electrically isolated but thermally coupled to Bridge A
STEP / BENBL (Pin 8)	Indexer step clock / Bridge B enable	Rising edge advances indexer; in phase/enable mode, high enables BOUT outputs - internal pulldown
DIR / BPHASE (Pin 9)	Indexer direction / Bridge B phase	Sets rotation direction in indexer mode; sets BOUT1/BOUT2 polarity in phase/enable mode - internal pulldown
nENBL / AENBL (Pin 7)	Indexer enable / Bridge A enable	Logic low disables AOUT outputs in indexer mode; logic high enables AOUT in phase/enable mode - internal pulldown
M0 / APHASE (Pin 10)	Microstep mode bit 0 / Bridge A phase	Tri-level input (low/high/Z) selects full/half/quarter/8/16/32-step; in phase/enable mode, sets AOUT polarity
M1 (Pin 11)	Microstep mode bit 1 / Disable state	Configures microstep resolution with M0; in phase/enable mode, determines output state when xENBL = 0
CONFIG (Pin 12)	Mode selection latch	High = indexer (STEP/DIR); low = phase/enable (xPHASE/xENBL); latched at power-up and wake-from-sleep
nSLEEP (Pin 22)	Low-power sleep control	Logic low enters sleep mode (IVMQ ≤ 9.6 µA at 10 V); wake-up time ≤ 1 ms - resets internal logic on exit
nFAULT (Pin 13)	Open-drain fault indicator	Drives low on overcurrent, overtemperature, or UVLO; requires external pull-up; asserts during power-up until regulators stabilize
AISEN / BISEN (Pins 2,5)	Current sense return paths	Connect to low-side current sense resistors; voltage sensed vs. xVREF/5 to set I_TRIP; may tie to GND if current control unused
AVREF / BVREF (Pins 19,20)	Bridge A/B current reference inputs	In indexer mode: connect to VREFO (2.0 V) for DAC scaling; in phase/enable mode: accept external DAC for fine microstepping
VREFO (Pin 21)	Internal 2.0-V reference output	Stable 2.0-V ±5% output; no bypass cap allowed; used to bias AVREF/BVREF in indexer mode
ADECAY / BDECAY (Pins 24,23)	Bridge A/B decay mode control	Voltage/resistor divider sets % fast decay (0–100%); internal 10-µA source enables GPIO-driven tristate selection

Key Features

Feature	Design Value
Dual-H-bridge topology with N-channel MOSFETs	Enables bidirectional drive of two DC motors or one bipolar stepper without external gate drivers or bootstrap components
1/32 microstepping indexer with M0/M1 configuration	Eliminates need for external microcontroller-based step sequencing - reduces firmware complexity and timing-critical code
Dynamic t_BLANK and mixed decay modes	Reduces torque ripple and acoustic noise at low speeds by adapting blanking time and decay ratio to commanded current level
Integrated protection suite (OCP, UVLO, TSD)	Provides autonomous fault recovery without host intervention - nFAULT assertion allows system-level error logging and safe shutdown
VQFN-24 with PowerPAD™ thermal enhancement	Delivers 35.1°C/W junction-to-ambient thermal resistance - supports 1.5-A continuous operation at 25°C ambient without heatsink

Applications

POS Printers	Video Security Cameras
Use Scenario: Bidirectional paper feed and print head positioning in compact thermal receipt printers. IC Role / Device Role / Timing Role: Dual-bridge stepper driver executing 1/32 microstepping for precise paper advance and quiet operation. Use Value: Enables sub-millimeter positioning accuracy and eliminates mechanical vibration that causes image blur in printed receipts.	Use Scenario: Pan-tilt-zoom (PTZ) actuation in battery-powered indoor security cameras. IC Role / Device Role / Timing Role: Stepper motor controller managing simultaneous pan and tilt axes with coordinated microstepping. Use Value: Delivers silent, jitter-free motion essential for video stability and stealthy surveillance without audible motor whine.
Robotics Platforms	Battery-Powered Toys
Use Scenario: Joint actuation in educational and hobbyist robotic arms requiring precise angular control. IC Role / Device Role / Timing Role: Dual H-bridge driver operating in phase/enable mode for independent DC motor control per joint. Use Value: Supports PWM speed regulation and brake/slow-decay modes for responsive, energy-efficient motion control from 3.0–9.0 V batteries.	Use Scenario: Motorized motion in handheld toys with limited PCB space and strict cost targets. IC Role / Device Role / Timing Role: Integrated stepper driver replacing discrete H-bridges and sequencer logic in compact form factor. Use Value: Reduces BOM count by 7+ components while enabling smooth, programmable motion profiles via simple STEP/DIR interface.

POS Printers

Video Security Cameras

Use Scenario: Bidirectional paper feed and print head positioning in compact thermal receipt printers.

IC Role / Device Role / Timing Role: Dual-bridge stepper driver executing 1/32 microstepping for precise paper advance and quiet operation.

Use Value: Enables sub-millimeter positioning accuracy and eliminates mechanical vibration that causes image blur in printed receipts.

Use Scenario: Pan-tilt-zoom (PTZ) actuation in battery-powered indoor security cameras.

IC Role / Device Role / Timing Role: Stepper motor controller managing simultaneous pan and tilt axes with coordinated microstepping.

Use Value: Delivers silent, jitter-free motion essential for video stability and stealthy surveillance without audible motor whine.

Robotics Platforms

Battery-Powered Toys

Use Scenario: Joint actuation in educational and hobbyist robotic arms requiring precise angular control.

IC Role / Device Role / Timing Role: Dual H-bridge driver operating in phase/enable mode for independent DC motor control per joint.

Use Value: Supports PWM speed regulation and brake/slow-decay modes for responsive, energy-efficient motion control from 3.0–9.0 V batteries.

Use Scenario: Motorized motion in handheld toys with limited PCB space and strict cost targets.

IC Role / Device Role / Timing Role: Integrated stepper driver replacing discrete H-bridges and sequencer logic in compact form factor.

Use Value: Reduces BOM count by 7+ components while enabling smooth, programmable motion profiles via simple STEP/DIR interface.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-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 larger HTSSOP-28 package and no integrated microstepping indexer	Requires external step sequencer; suited for industrial stepper systems needing higher torque and bus voltage	Select TB6600HG only when >10-V supply or >2-A current is required; DRV8834RGET offers superior integration for portable 5-V designs
LV8729V	Lower R_DS(ON) (220 mΩ), 2.5-A peak, but only supports up to 1/16 microstepping and lacks dynamic t_BLANK	Less effective at suppressing low-speed vibration; requires external decay control circuitry for mixed-mode tuning	Choose LV8729V if peak current >1.5 A is critical and microstepping beyond 1/16-step is unnecessary; DRV8834RGET provides quieter, finer motion

Compared with TB6600HG and LV8729V, the DRV8834RGET uniquely combines 1/32 microstepping, dynamic blanking, and VQFN-24 thermal efficiency in a single 4×4-mm package - making it optimal for space-constrained, battery-powered motion systems where acoustic performance and design simplicity are prioritized.

Availability

DRV8834RGET is available at Aetrix Electronics and suitable for POS printers, video security cameras, robotics platforms, and battery-powered toys requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for DRV8834RGET 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 ICs and industrial-grade reliability.

The DRV8834RGET belongs to TI's DRV8xxx family of integrated motor drivers, designed specifically for compact, low-voltage mechatronic applications demanding high integration, thermal efficiency, and flexible control modes without external sequencers or gate drivers.

FAQ

What is the maximum microstepping resolution supported by the DRV8834RGET?

The DRV8834RGET supports up to 1/32-step microstepping using its internal indexer logic when configured via M0 and M1 pins. In indexer mode, the device uses internal 5-bit DACs to scale current references (AVREF/BVREF) across the full step table. For resolutions finer than 1/32-step, external DACs can be applied to AVREF and BVREF in phase/enable mode - enabling arbitrary microstepping patterns. The DRV8834RGET datasheet confirms this capability in Section 8.3.1 and Table 3.

How does the DRV8834RGET handle current regulation and blanking time?

The DRV8834RGET uses fixed-frequency 42.5-kHz PWM current regulation with dynamic blanking time (t_BLANK). When the commanded current is low, t_BLANK reduces from 2.4 µs to 1.6 µs to minimize minimum duty cycle distortion near zero crossing - directly improving sinusoidal fidelity and reducing vibration. This behavior is confirmed in Section 8.3.1 and Figure 8 of the DRV8834RGET datasheet, and applies regardless of decay mode selection.

Can the DRV8834RGET drive two independent DC motors?

Yes, the DRV8834RGET can drive two independent DC motors using phase/enable mode (CONFIG = low). In this mode, DIR/BPHASE and nENBL/AENBL control Bridge B and A respectively, while M1 configures the output state during disable (high-Z or brake). Each bridge delivers 1.5-A continuous at 5 V, with independent decay control via BDECAY and ADECAY pins - enabling precise speed and direction control for dual-motor applications like differential-drive robots.

What thermal performance can be expected from the DRV8834RGET in its VQFN package?

The DRV8834RGET in the RGE (VQFN-24) package has a junction-to-ambient thermal resistance (R_θJA) of 35.1°C/W under standard JEDEC PCB conditions. With 1.5-A continuous per bridge at 5 V, total conduction loss is ~1.2 W, resulting in ~42°C junction rise above ambient - well within the 150°C thermal shutdown limit. Section 7.4 of the DRV8834RGET datasheet validates this, and TI recommends connecting the PowerPAD™ to a ≥100-mm² copper pour for optimal performance.

How does the nFAULT pin behave during startup and fault conditions?

The nFAULT pin is an open-drain output that remains low during power-up, sleep wake-up, and any fault condition (overcurrent, overtemperature, or UVLO) until internal regulators stabilize. It asserts low for ~1.2 ms during OCP retry cycles and stays low during sustained faults. Section 8.3.3 and the Pin Functions table in the DRV8834RGET datasheet specify that nFAULT requires an external pull-up resistor and serves as the sole consolidated fault indicator for both bridges - simplifying system-level monitoring.

DRV8834RGET Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 24-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

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-VQFN (4x4)

DRV8834RGET FAQ

1.How can I place an order for DRV8834RGET through Aetrix?

Please submit a Request for Quotation (RFQ) for DRV8834RGET 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 DRV8834RGET reliable?

The price and inventory of DRV8834RGET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8834RGET is usually 5 days.

3.What payment methods are accepted for DRV8834RGET?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8834RGET transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DRV8834RGET?

DRV8834RGET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DRV8834RGET 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 DRV8834RGET?

For technical support, including DRV8834RGET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8834RGET requirements.

6.How does Aetrix verify that DRV8834RGET is sourced from the original manufacturer or authorized distributors?

All DRV8834RGET 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 DRV8834RGET meets industry standards.

7.What is the process for return or replacement of DRV8834RGET?

All DRV8834RGET units undergo pre-shipment inspection (PSI). If there is an issue with DRV8834RGET, 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 DRV8834RGET part is unused and in its original packaging.

Return procedure for DRV8834RGET:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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