component
DRV8811PWPR
Public Made by Adomby adom
Texas Instruments Stepper Motor Driver, HTSSOP-28. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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PCB Footprint
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Datasheet
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README
markdownDRV8811PWPR
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)
- 3D model files:
drv8811pwpr-etched.step/drv8811pwpr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);drv8811pwpr.step/drv8811pwpr.glbare the bare package body.
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).