Gehäuseinformationen
Gehäuse | Pins WQFN (RHR) | 28 |
Betriebstemperaturbereich (°C) -40 to 125 |
Gehäusemenge | Träger 3.000 | LARGE T&R |
Merkmale von DRV8884
- PWM microstepping stepper motor driver
- Up to 1/16 microstepping
- Non-circular and standard ½ step modes
- Integrated current sense functionality
- No sense resistors required
- ±6.25% Full-scale current accuracy
- Slow and mixed decay options
- 8.0- to 37-V Operating supply voltage range
- Low RDS(ON): 1.4 Ω HS + LS at 24 V, 25°C
- High current capacity
- 1.0-A Full scale per bridge
- 0.7-A rms per bridge
- Fixed off-time PWM chopping
- Simple STEP/DIR interface
- Low-current sleep mode (20 µA)
- Small package and footprint
- 24 HTSSOP PowerPAD™ package
- 28 WQFN package
- Protection features
- VM undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal shutdown (TSD)
- Fault condition indication pin (nFAULT)
Beschreibung von DRV8884
The DRV8884 device is a stepper motor driver for industrial equipment applications. The device has two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sense. The DRV8884 is capable of driving up to 1.0-A full scale or 0.7-A rms output current (depending on proper PCB ground plane for thermal dissipation and at 24 V and TA = 25°C).
The DRV8884 integrated current sense functionality eliminates the need for two external sense resistors.
The STEP/DIR pins provide a simple control interface. The device can be configured in full-step up to 1/16 step modes. A low-power sleep mode is provided for very-low quiescent current standby using a dedicated nSLEEP pin.
Internal protection functions are provided for undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by an nFAULT pin.