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Texas Instruments DRV8821DCA — Discrete Semiconductors

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
Texas Instruments DRV8821DCA datasheet (PDF)
Packaging48-TFSOP (0.240", 6.10mm Width) Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DRV8821DCA specifications
ParameterValue
MountingSurface Mount
Motor type - stepperBipolar
Voltage - load8V ~ 32V
Supply voltage8V ~ 32V
Output current1.5A
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

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.

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.

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.