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DRV8834 Stepper Driver
DRV8834
Texas Instrumentsic motor driver
DRV8834 is a dual-bridge stepper driver that supports both phase/enable and indexer modes for controlling stepper motors or DC motors, with an operating voltage range of 2.5V to 10.8V.
In stock
Specifications
8- Operating Voltage
- 2.5 V to 10.8 V
- Supply Current
- 4 mA (VM = 5 V, excluding winding current) mA
- Interface
- GPIO, ADC, PWM
- Resolution
- 1/32-step microstepping
- Range
- Continuous RMS or DC output current per bridge: 1.5 A A
- Accuracy
- RDS(ON) of HS FETs: 305 mΩ at VM = 5 V, 25°C; RDS(ON) of LS FETs: 190 mΩ at VM = 5 V, 25°C mΩ
- Temperature Range
- -40°C to 150°C (TJ)
- Package
- 24-Pin HTSSOP or VQFN
Pinout
20| Pin | Name | Functions | Notes |
|---|---|---|---|
| GND | Device ground | POWERGND | |
| VM | Bridge A power supply | POWER | Recommended to connect a 10-µF capacitor to GND. |
| VINT | Internal supply voltage | POWER | |
| nSLEEP | Sleep mode input | GPIO | Logic low to enter low-power sleep mode. |
| STEP / BENBL | Step input/Bridge B enable | GPIO | Internal pulldown, logic high enables the BOUT1 output. |
| DIR / BPHASE | Direction input/Bridge B Phase | GPIO | Internal pulldown, logic high sets BOUT2 low. |
| M0 / APHASE | Microstep mode/Bridge A phase | GPIO | Internal pulldown, controls microstep mode in indexer mode. |
| M1 | Microstep mode/Disable state | GPIO | Internal pulldown, determines the state of outputs when xENBL = 0. |
| CONFIG | Device configuration | GPIO | Logic high to enable device in indexer mode; logic low for phase/enable mode. |
| AVREF | Reference voltage input (Bridge A current set reference) | ADC | |
| BVREF | Reference voltage input (Bridge B current set reference) | ADC | |
| ADECAY | Decay mode for bridge A | GPIO | Determines decay mode in indexer mode. |
| BDECAY | Decay mode for bridge B | GPIO | Determines decay mode in indexer mode. |
| AISEN | Bridge A ground/Isense | GNDPOWER | |
| BISEN | Bridge B ground/Isense | GNDPOWER | |
| AOUT1 | Bridge A output 1 | GPIO | Connect to motor winding A. |
| AOUT2 | Bridge A output 2 | GPIO | Connect to motor winding A. |
| BOUT1 | Bridge B output 1 | GPIO | Connect to motor winding B. |
| BOUT2 | Bridge B output 2 | GPIO | Connect to motor winding B. |
| nFAULT | Fault output (open-drain) | GND | Logic low when in fault condition. |
Interactive pinout
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DRV8834
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