# DRV8436RGER

**Texas Instruments** · Stepper Motor Driver · VQFN-24-EP(4x4)

DRV8436RGER 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 driver power supply voltage input from 4.5V to 48V range. |
| 2 | PGND | power_in | Power ground internally connected with internal short to pin 7, connect to system ground. |
| 3 | AOUT1 | output | Motor winding A phase output connected to stepper motor coil for phase drive. |
| 4 | AOUT2 | output | Motor winding A phase output connected to stepper motor coil for phase drive. |
| 5 | BOUT2 | output | Motor winding B phase output connected to stepper motor coil for phase drive. |
| 6 | BOUT1 | output | Motor winding B phase output connected to stepper motor coil for phase drive. |
| 7 | PGND | power_in | Power ground internally connected with internal short to pin 2, connect to system ground. |
| 8 | VM | power_in | Motor driver power supply voltage input from 4.5V to 48V range. |
| 9 | GND | power_in | Device ground reference connected to system ground. |
| 10 | DVDD | power_out | Internal regulated 5V output with maximum 2mA load capability, bypass with 0.47µF to 1µF capacitor to GND. |
| 11 | nFAULT | output | Open-drain fault indicator output pulled low on fault detection, requires external pull-up resistor. |
| 12 | VREF | power_in | Current reference input from 0.05V to 3.3V maximum for setting full-scale motor current. |
| 13 | M0 | input | Microstepping resolution mode configuration input with internal pull-down resistor to GND. |
| 14 | TOFF | input | Four-level PWM off-time selector input for decay mode timing (7µs, 16µs, 24µs, or 32µs options). |
| 15 | DECAY1 | input | Decay mode configuration input with internal pull-down resistor. |
| 16 | DECAY0 | input | Decay mode configuration input with internal pull-down resistor. |
| 17 | M1 | input | Four-level microstepping resolution mode configuration input with internal pull-down resistor. |
| 18 | STEP | input | Step command input triggered by rising edge to advance stepper with internal pull-down resistor. |
| 19 | DIR | input | Direction control input setting motor step direction with internal pull-down resistor. |
| 20 | ENABLE | input | Output driver enable input with internal pull-up to DVDD, controls output disable and OCP response type. |
| 21 | nSLEEP | input | Sleep mode control input with logic high enabling device and logic low entering low-power shutdown mode. |
| 22 | CPL | passive | Charge pump negative switch node, connect 0.022µF X7R capacitor between CPL and CPH. |
| 23 | CPH | passive | Charge pump switching node rated for VM voltage, connect 0.022µF X7R capacitor between CPH and CPL. |
| 24 | VCP | power_out | Charge pump output at nominal VM + 5V for high-side gate drive, connect 0.22µF 16V capacitor to VM. |
| 25 | EP | 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: `DRV8436RGER`
- 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: `drv8436rger-etched.step` / `drv8436rger-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `drv8436rger.step` / `drv8436rger.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/drv8436) (52 pp, sha256 `8c817610402342b6`, retrieved 2026-10-01, 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`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-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).

[Datasheet PDF](docs/drv8436rger-datasheet.pdf)