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DRV8841PWPR

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

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Contents

README

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DRV8841PWPR

Texas Instruments · Stepper Motor Driver · HTSSOP-28

DRV8841PWPR 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 CP1 bidirectional Charge pump flying capacitor node; requires 0.01-µF 50-V capacitor between CP1 and CP2.
2 CP2 bidirectional Charge pump flying capacitor node; requires 0.01-µF 50-V capacitor between CP1 and CP2.
3 VCP bidirectional High-side gate drive voltage; connect through 0.1-µF 16-V capacitor and 1-MΩ resistor to VM.
4 VMA power_in Bridge A motor power supply; accepts 8.2 V to 45 V with 0.1-µF bypass capacitor to GND per pin.
5 AOUT1 output Bridge A output 1; drives motor winding A with 2.5-A peak drive current.
6 ISENA bidirectional Bridge A current sense; connect external sense resistor for bridge A current regulation.
7 AOUT2 output Bridge A output 2; drives motor winding A with 2.5-A peak drive current.
8 BOUT2 output Bridge B output 2; drives motor winding B with 2.5-A peak drive current.
9 ISENB bidirectional Bridge B current sense; connect external sense resistor for bridge B current regulation.
10 BOUT1 output Bridge B output 1; drives motor winding B with 2.5-A peak drive current.
11 VMB power_in Bridge B motor power supply; accepts 8.2 V to 45 V with 0.1-µF bypass capacitor to GND per pin.
12 AVREF input Bridge A reference voltage input; accepts 1 V to 3.5 V for current threshold setting (0 V to 1 V acceptable with degraded accuracy).
13 BVREF input Bridge B reference voltage input; accepts 1 V to 3.5 V for current threshold setting (0 V to 1 V acceptable with degraded accuracy).
14 GND power_in Device ground reference; return path for all signals.
15 V3P3OUT power_out 3.3-V regulator output; provides 3.2 V to 3.4 V at 0 to 1-mA output current, bypass with 0.47-µF 6.3-V capacitor.
16 nRESET input Active-low reset input; resets internal logic and disables H-bridge outputs when low.
17 nSLEEP input Sleep mode control input; logic high enables device, logic low enters low-power sleep mode.
18 nFAULT tri_state Open-drain fault output; pulled low on overtemperature or overcurrent protection event.
19 DECAY input Decay mode control input; low = slow decay, open = mixed decay, high = fast decay.
20 AIN2 input Bridge A input 2; logic level controls AOUT2 output state.
21 AIN1 input Bridge A input 1; logic level controls AOUT1 output state.
22 BIN1 input Bridge B input 1; logic level controls BOUT1 output state.
23 BIN2 input Bridge B input 2; logic level controls BOUT2 output state.
24 AI0 input Bridge A current setting bit 0; sets current level with AI1 (00=100%, 01=71%, 10=38%, 11=0%).
25 AI1 input Bridge A current setting bit 1; sets current level with AI0 (00=100%, 01=71%, 10=38%, 11=0%).
26 BI0 input Bridge B current setting bit 0; sets current level with BI1 (00=100%, 01=71%, 10=38%, 11=0%).
27 BI1 input Bridge B current setting bit 1; sets current level with BI0 (00=100%, 01=71%, 10=38%, 11=0%).
28 GND power_in Device ground reference (PowerPAD); return path and thermal pad.
29 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

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

CAD (KiCad official)

  • Symbol: DRV8841PWPR
  • Footprint: Package_SO:TSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP2.85x6.7mm
  • 3D model: HTSSOP-28 (KiCad packages3D, STEP)
  • 3D model files: drv8841pwpr-etched.step / drv8841pwpr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); drv8841pwpr.step / drv8841pwpr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (32 pp, sha256 41ed628a530332e4, retrieved 2026-09-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF