|Package | PIN:||VQFN (RGE) | 24|
|Temp:||Q (-40 to 125)|
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: -40°C to 125°C Ambient Operating TemperatureRange
- Device HBM ESD Classification Level 3A
- Device CDM ESD Classification Level C4B
- PWM microstepping stepper motor driver
- Up to 1/256 microstepping
- Integrated current sense functionality
- No sense resistors required
- Smart tune decay technology,
Fixed slow, and mixed decay options
- 4.5 to 45-V Operating supply voltage range
- Low RDS(ON): 900 mΩ HS + LS at 13.5 V, 25°C
- High current capacity per bridge
- 2.5-A peak, 1.5-A full-scale, 1.1-Arms
- Configurable off-time PWM chopping
- 7-µs, 16-µs, 24-µs, or 32-µs.
- Simple STEP/DIR interface
- SPI with daisy chain support
- Low-current sleep mode (2 µA)
- Spread spectrum clocking and output slew rate control minimizes EMI
- Small package and footprint
- Protection features
- VM undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Stall detection
- Open loaddetection
- Overtemperature warning (OTW)
- Undertemperature warning (UTW)
- Thermal shutdown (OTSD)
- Fault condition indication pin (nFAULT)
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Texas Instruments PDRV8889QWRGERQ1
The DRV8889-Q1 is a stepper motor driver for automotive applications.The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microsteppingindexer, and integrated current sensing. The DRV8889-Q1 is capable of driving up to 1.5-A fullscale or 1.1-A rms output current (13.5-V and TA = 25°C, dependent on PCBdesign).
The DRV8889-Q1 uses an internal current sense architecture to eliminatethe need for two external power sense resistors, saving PCB area and system cost. The DRV8889-Q1uses an internal PWM current regulation scheme selectable between smart tune, slow, and mixed decayoptions. Smart tune decay technology automatically adjusts for optimal current regulationperformance and compensates for motor variation and aging effects. A torque DAC feature allows thecontroller to scale the output current without needing to scale the VREF voltage reference.
A simple STEP/DIR interface allows an external controller to manage the direction andstep rate of the stepper motor. The device can be configured in different step modes ranging fromfull-step to 1/256 microstepping. A low-power sleep mode is provided for very low standby quiescentstandby current using a dedicated nSLEEP pin. The device features full duplex, 4-wire synchronousSPI communication, with daisy chain support for up to 63 devices connected in series, forconfigurability and detailed fault reporting.