1.5A Stepper Motor Driver with 1/16 Microstepping and Integrated Current Sensing (STEP/DIR Ctrl) - DRV8885

DRV8885 (ACTIVE)

1.5A Stepper Motor Driver with 1/16 Microstepping and Integrated Current Sensing (STEP/DIR Ctrl)

 

Description

The DRV8885 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 DRV8885 is capable of driving up to 1.5 A full scale or 1.0 A rms output current (depending on proper PCB ground plane for thermal dissipation and at 24 V and TA = 25°C).

The DRV8885 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.

For all available packages, see the orderable addendum at the end of the data sheet.

Features

  • 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): 0.86 Ω HS + LS at 24 V, 25°C
  • High Current Capacity
    • 1.5-A Full Scale per Bridge
    • 1.0-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)
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Charge Pump Undervoltage (CPUV)
    • Overcurrent Protection (OCP)
    • Thermal Shutdown (TSD)
    • Fault Condition Indication Pin (nFAULT)

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Parametrics Compare all products in Stepper Drivers with FETs

 
Vs (Min) (V)
Vs (Max) (V)
# of Full Bridges
RDS(ON) (HS + LS) (mOhms)
RMS Output Current (A)
Peak Output Current (A)
Current Regulation Levels
Control I/F
Additional Features
Pin/Package
Rating
Operating Temperature Range (C)
Approx. Price (US$)
DRV8885 DRV8811 DRV8821 DRV8884
8     8     8     8    
37     38     32     37    
2     2     4     2    
860     1000     550     1400    
1     1.4     1     0.7    
1.5     1.9     1.5     1    
16     8     8     16    
Indexer     Indexer     Indexer     Indexer    
Integrated current sensing
Dedicated sleep pin    
1/8 Microstepping
P2P w/ DRV8818    
On-chip Microstepping     Integrated current sensing
Dedicated sleep pin    
24HTSSOP     28HTSSOP     48HTSSOP     24HTSSOP    
Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 85     -40 to 85     -40 to 125    
1.49 | 1ku     1.45 | 1ku     2.00 | 1ku     1.30 | 1ku    

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