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Texas Instruments DRV8821DCA — Discrete Semiconductors
Texas Instruments

DRV8821DCA Bipolar Stepper Driver, 1.5 A, 8-32 V, 48-HTSSOP

MPNDRV8821DCA
End of Life

Texas Instruments DRV8821DCA, Fully Integrated Bipolar Stepper Motor Driver, 1.5 A Output, 8 V to 32 V Supply, 1/1 to 1/8 Microstep, Power MOSFET, Logic Interface, 48-HTSSOP Exposed Pad, -40 to 150°C.

$6.53Ref. price · indicative, final on quote
DRV8821DCA datasheet
Packaging48-TFSOP (0.240", 6.10mm Width) Exposed Pad
StockContact for availability
MOQ1 pcs
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Specifications

DRV8821DCA Technical Specifications
ParameterValue
Mounting typeSurface Mount
Motor type - stepperBipolar
Voltage - load8V ~ 32V
Voltage8V ~ 32V
Current - output1.5A
InterfaceLogic
Operating temperature-40°C ~ 150°C (TJ)
PackageTube
FunctionDriver - Fully Integrated, Control and Power Stage
TechnologyPower MOSFET
ApplicationsGeneral Purpose
Case48-TFSOP (0.240\", 6.10mm Width) Exposed Pad
Step resolution1, 1/2, 1/4, 1/8
Output configurationHalf Bridge (8)

Product details

What this stepper driver brings to the board

The Texas Instruments DRV8821DCA is a fully integrated bipolar stepper motor driver that packs the control logic and power stage into a single 48-HTSSOP with an exposed pad for heat sinking. It drives one bipolar stepper motor at up to 1.5 A per winding from an 8 V to 32 V supply rail, with selectable microstepping down to 1/8 step. The eight half-bridge outputs are built around Power MOSFETs, so no external FETs or charge-pump components are needed — just the motor, a supply, and logic-level step/direction signals. This part is rated for general-purpose industrial motion control and carries a junction temperature range of -40°C to 150°C, which covers most factory-floor and outdoor equipment enclosures.

1.5 A output — what it means for motor sizing

The 1.5 A continuous per-bridge rating decides whether this driver can handle your motor.

Lifecycle and compliance

The DRV8821DCA is listed as Active with ROHS3 compliance. The ROHS3 status covers the full substance restriction list, which simplifies compliance documentation for EU-market equipment.

Frequently asked questions

What is the difference between DRV8821 and DRV8825?

The DRV8825 is a similar bipolar stepper driver from TI but offers 1/32 microstepping and a slightly higher output current (2.5 A typical) in a smaller package (HTSSOP-28). The DRV8821DCA uses eight half-bridges in a 48-HTSSOP and tops out at 1/8 step. The DRV8825 is not a pin-compatible swap — the package and pinout differ.

What is the thermal resistance of DRV8821DCA?

The evidence does not provide a specific thermal resistance value (RθJA or RθJC). For thermal design, rely on the exposed pad of the 48-HTSSOP and follow the PCB layout guidelines in the datasheet to keep the junction temperature within the -40°C to 150°C range.