component
DRV8426ERGER
Public Made by Adomby adom
Texas Instruments Stepper Motor Driver, VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownDRV8426ERGER
Texas Instruments · Stepper Motor Driver · VQFN-24-EP(4x4)
DRV8426ERGER from Texas Instruments, in a VQFN-24-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VM | power_in | Motor supply input, recommended 4.5 V to 33 V, bypassed to PGND with a 0.01 µF ceramic capacitor rated VM plus a bulk capacitor rated above VM. |
| 2 | PGND | power_in | Power ground for the motor driver; connect to system ground. |
| 3 | AOUT1 | output | Bridge A output 1, connects to motor winding A. |
| 4 | AOUT2 | output | Bridge A output 2, connects to motor winding A. |
| 5 | BOUT2 | output | Bridge B output 2, connects to motor winding B. |
| 6 | BOUT1 | output | Bridge B output 1, connects to motor winding B. |
| 7 | PGND | power_in | Power ground for the motor driver; connect to system ground. |
| 8 | VM | power_in | Motor supply input, recommended 4.5 V to 33 V, bypassed to PGND with a 0.01 µF ceramic capacitor rated VM plus a bulk capacitor rated above VM. |
| 9 | GND | power_in | Device ground; connect to system ground. |
| 10 | DVDD | power_out | Internal 5 V logic regulator output (up to 2 mA load); bypass to GND with a 0.47 µF to 1 µF X7R ceramic capacitor rated 6.3 V or 10 V. |
| 11 | nFAULT | output | Open-drain fault indicator, pulled low during a fault and requiring an external pull-up; open-drain current limited to 10 mA maximum. |
| 12 | VREFB | input | Reference voltage input that sets the full-scale chopping current for bridge B; maximum 3.3 V. |
| 13 | VREFA | input | Reference voltage input that sets the full-scale chopping current for bridge A; maximum 3.3 V. |
| 14 | TOFF | input | Four-level input setting the PWM off-time: GND gives 7 µs, DVDD gives 16 µs, high-impedance gives 24 µs, and 330 kΩ to GND gives 32 µs. |
| 15 | BDECAY | input | Four-level input setting the decay mode for bridge B (smart-tune dynamic, smart-tune ripple control, mixed decay, or fast decay). |
| 16 | ADECAY | input | Four-level input setting the decay mode for bridge A (smart-tune dynamic, smart-tune ripple control, mixed decay, or fast decay). |
| 17 | BPH | input | Bridge B phase input; logic high drives current from BOUT1 to BOUT2. |
| 18 | BEN | input | Bridge B enable input; logic high enables bridge B, logic low disables it to high impedance. |
| 19 | APH | input | Bridge A phase input; logic high drives current from AOUT1 to AOUT2. |
| 20 | AEN | input | Bridge A enable input; logic high enables bridge A, logic low disables it to high impedance. |
| 21 | nSLEEP | input | Sleep mode input; logic high enables the device, logic low enters low-power sleep, and a 20 µs to 40 µs low pulse clears faults. |
| 22 | CPL | passive | Charge pump negative switching node; connect a X7R 0.022 µF ceramic capacitor rated VM between CPH and CPL. |
| 23 | CPH | passive | Charge pump switching node; connect a X7R 0.022 µF ceramic capacitor rated VM between CPH and CPL. |
| 24 | VCP | power_out | Charge pump output; connect a X7R 0.22 µF 16 V ceramic capacitor between VCP and VM. |
| 25 | PAD | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-24-EP(4x4) |
| Category | Motor Driver ICs |
| Pins | 25 |
CAD (KiCad official)
- Symbol:
DRV8426ERGER - Footprint:
Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm - 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
drv8426erger-etched.step/drv8426erger-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);drv8426erger.step/drv8426erger.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (54 pp, sha256
a28056b73354293f, retrieved 2026-10-11, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(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).