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DRV8825 Stepper Driver
DRV8825
Texas Instrumentsic motor driver
The DRV8825 is a microstepping bipolar stepper motor driver with two integrated H-bridges and a built-in indexer. A simple STEP/DIR interface and mode pins support full-step up to 1/32 microstepping, driving up to 2.5 A per coil.
In stock
Specifications
7- Operating Voltage
- 8.2 to 45 V
- Output Current Continuous
- 2.5 A
- Supply Current
- 5 mA
- Interface
- STEP/DIR
- Microstepping
- full to 1/32
- Operating Temperature Range
- -40 to 150 °C
- Package Types
- HTSSOP-28
Pinout
28| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | CP1 | GPIO | Charge pump flying capacitor |
| 2 | CP2 | GPIO | Charge pump flying capacitor |
| 3 | VCP | POWER | High-side gate drive voltage |
| 4 | VMA | POWER | Bridge A power supply (8.2 to 45 V) |
| 5 | AOUT1 | GPIO | Bridge A output 1 to motor winding A |
| 6 | ISENA | GPIO | Bridge A ground / current-sense resistor connection |
| 7 | AOUT2 | GPIO | Bridge A output 2 to motor winding A |
| 8 | BOUT2 | GPIO | Bridge B output 2 to motor winding B |
| 9 | ISENB | GPIO | Bridge B ground / current-sense resistor connection |
| 10 | BOUT1 | GPIO | Bridge B output 1 to motor winding B |
| 11 | VMB | POWER | Bridge B power supply (8.2 to 45 V) |
| 12 | AVREF | GPIO | Bridge A current set reference input |
| 13 | BVREF | GPIO | Bridge B current set reference input |
| 14 | GND | GND | Device ground |
| 15 | V3P3OUT | POWER | 3.3-V regulator output |
| 16 | nRESET | GPIO | Active-low reset; initializes indexer and disables outputs |
| 17 | nSLEEP | GPIO | Logic low enters low-power sleep mode |
| 18 | nFAULT | GPIO | Open-drain fault output, low on overtemp/overcurrent |
| 19 | DECAY | GPIO | Decay mode select (slow/mixed/fast) |
| 20 | DIR | GPIO | Direction input |
| 21 | nENBL | GPIO | Enable input; logic low to enable outputs |
| 22 | STEP | GPIO | Step input; rising edge advances one step |
| 23 | NC | GPIO | No connect; leave unconnected |
| 24 | MODE0 | GPIO | Microstep mode select bit 0 |
| 25 | MODE1 | GPIO | Microstep mode select bit 1 |
| 26 | MODE2 | GPIO | Microstep mode select bit 2 |
| 27 | nHOME | GPIO | Open-drain home position output, low at home state |
| 28 | GND | GND | Device ground |
Interactive pinout
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DRV8825
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