Editing: TMC2209

Field: AI Skill Technical Reference

# TMC2209 — Silent stepper motor driver, 2A RMS, UART, QFN-28

**Manufacturer:** Trinamic (ADI)
**Package:** QFN-28
**LCSC:** C2859335

## Description

The TMC2209 is a quiet stepper motor driver from Trinamic (ADI) with StealthChop2 for silent operation. Supports up to 2A RMS with 256 microstep interpolation and UART configuration. Popular in modern 3D printers.

## Pin Configuration

Package: QFN-28

- Pin 1: BRB — Motor B output, coil B negative
- Pin 2: VM — Motor supply voltage
- Pin 3: CPO — Charge pump output
- Pin 4: CPI — Charge pump capacitor input
- Pin 5: VCC_IO — I/O supply voltage 3.3V/5V
- Pin 6: PDN_UART — UART interface / power down
- Pin 7: MS1/AD0 — Microstep config 1 / UART address 0
- Pin 8: MS2/AD1 — Microstep config 2 / UART address 1
- Pin 9: ENN — Enable, active low
- Pin 10: CLK — Clock input
- Pin 11: STEP — Step input
- Pin 12: SPREAD — SpreadCycle enable
- Pin 13: DIR — Direction input
- Pin 14: VREF — Analog reference voltage
- Pin 15: GND — Ground
- Pin 16: OB2 — Motor B output, sense B
- Pin 17: BRA — Motor B output, coil B positive
- Pin 18: OB1 — Motor B output, sense B
- Pin 19: OA2 — Motor A output, sense A
- Pin 20: ARA — Motor A output, coil A positive
- Pin 21: OA1 — Motor A output, sense A
- Pin 22: ARB — Motor A output, coil A negative
- Pin 23: DIAG — Diagnostic output
- Pin 24: INDEX — Microstep index output
- Pin 25: 5VOUT — Internal 5V regulator output
- Pin 26: VCC — Internal supply 5V
- Pin 27: NC — Not connected
- Pin 28: VM — Motor supply voltage
- Pin 29: GND — Ground (Exposed Pad)

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