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DRV8811PWPR

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by Ray

Texas Instruments Stepper Motor Driver, HTSSOP-28. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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DRV8811PWPR

Texas Instruments · Stepper Motor Driver · HTSSOP-28

DRV8811PWPR from Texas Instruments, in a HTSSOP-28. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 ISENA input Bridge A ground / current sense. Connect to current sense resistor for bridge A. Absolute limit ±0.875 V (transients ±1 V <25 ns allowed).
2 HOMEn output Home position indicator. Logic low when the indexer is in the home state of the step table, logic high otherwise.
3 DIR input Direction input. Logic level sets the direction of stepping. Has weak internal pulldown (~1 MΩ).
4 AOUT1 output Bridge A output 1. Connect to bipolar stepper motor winding A. Rated up to 1.9 A. Positive current is AOUT1 → AOUT2.
5 DECAY input Decay mode select. Voltage applied sets decay mode (slow/mixed/fast). Bypass to GND with a 0.1 µF ceramic capacitor.
6 RCA input Bridge A blanking and off-time adjust. Connect a parallel resistor (12-100 kΩ) and capacitor (470-1500 pF) to GND.
7 GND power_in Device ground.
8 VREF input Current set reference input. Reference voltage for winding current regulation (0 to VCC). VREF nom 1 V.
9 RCB input Bridge B blanking and off-time adjust. Connect a parallel resistor (12-100 kΩ) and capacitor (470-1500 pF) to GND.
10 VCC power_in Logic supply voltage. Connect to a 3 V to 5.5 V logic supply. Bypass to GND with a 0.1 µF ceramic capacitor.
11 BOUT1 output Bridge B output 1. Connect to bipolar stepper motor winding B. Rated up to 1.9 A. Positive current is BOUT1 → BOUT2.
12 USM1 input Microstep mode 1. USM0/USM1 select full step, half step, quarter step, or 1/8 microstep. Weak internal pulldown.
13 USM0 input Microstep mode 0. USM0/USM1 select full step, half step, quarter step, or 1/8 microstep. Weak internal pulldown.
14 ISENB input Bridge B ground / current sense. Connect to current sense resistor for bridge B. Absolute limit ±0.875 V (transients ±1 V <25 ns allowed).
15 VMB power_in Bridge B power supply. Connect to motor supply (8 V to 38 V). VMA and VMB must be tied to the same supply.
16 SRn input Synchronous rectification enable input, active-low. When low, synchronous rectification is enabled. Weak internal pulldown.
17 RESETn input Reset input, active-low. Initializes the indexer logic and disables the H-bridge outputs. Weak internal pullup (~1 MΩ).
18 BOUT2 output Bridge B output 2. Positive current is BOUT1 → BOUT2. Rated up to 1.9 A.
19 STEP input Step input. Rising edge causes the indexer to advance one microstep. Weak internal pulldown.
20 VGD power_out Low-side gate drive voltage. Bypass to GND with a 0.22 µF ceramic capacitor. Absolute max 8 V.
21 GND power_in Device ground.
22 VCP power_out High-side gate drive voltage (charge pump output). Connect a 0.22 µF ceramic capacitor to VM.
23 CP1 passive Charge pump flying capacitor. Connect a 0.22 µF capacitor between CP1 and CP2.
24 CP2 passive Charge pump flying capacitor. Connect a 0.22 µF capacitor between CP1 and CP2.
25 AOUT2 output Bridge A output 2. Positive current is AOUT1 → AOUT2. Rated up to 1.9 A.
26 ENABLEn input Enable input, active-low. Logic high disables device outputs, logic low enables outputs. Weak internal pullup (~1 MΩ).
27 SLEEPn input Sleep mode input, active-low. Logic high enables the device, logic low enters low-power sleep mode. Weak internal pulldown.
28 VMA power_in Bridge A power supply. Connect to motor supply (8 V to 38 V). VMA and VMB must be tied to the same supply.
29 PAD power_in Exposed thermal pad. Connect to system ground with a large copper plane for improved thermal dissipation.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package HTSSOP-28
Category Motor Driver ICs
Pins 29

Ordering variants

Same part, different packaging or reel option.

  • DRV8811PWPR

CAD (KiCad official)

  • Symbol: DRV8811PWPR
  • Footprint: Package_SO:HTSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP3.4x9.5mm
  • 3D model: HTSSOP-28 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (33 pp, sha256 0b8de04cb904145e, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF