Overview
The DRV8889-Q1 and DRV8889A-Q1, represented by the part number DRV8889QPWPRQ1, are fully integrated stepper motor drivers manufactured by Texas Instruments. These devices support up to 1.5 A full-scale current and feature an internal microstepping indexer, smart tune decay technology, and advanced stall detection algorithms. They are designed to provide smooth motion profiles and efficient motor control, making them suitable for various automotive and industrial applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage Range | 4.5 to 45 | V |
| Full-Scale Current | 1.5 A | A |
| Peak Current | 2.4 A | A |
| Microstepping Resolution | Up to 1/256 | |
| Package Type | HTSSOP (24 pins) | |
| Operating Temperature Range | -40 to 125 | °C |
| RDS(ON) High-Side + Low-Side | 900 mΩ at 25°C | mΩ |
| Low-Current Sleep Mode | 2 µA | A |
Key Features
- AEC-Q100 Qualified for Automotive applications
- Integrated current sense functionality, eliminating the need for external sense resistors
- Smart tune decay technology, fixed slow, and mixed decay options
- Configurable off-time PWM chopping and programmable output slew rate
- Simple STEP/DIR interface and SPI with daisy chain support for up to 63 devices
- Low-current sleep mode (2 µA) and programmable open load detection time (for DRV8889A-Q1)
- Spread spectrum clocking to minimize EMI
- Protection features including VM undervoltage lockout, overcurrent protection, stall detection, open load detection, overtemperature warning and shutdown, and undertemperature warning
- Functional Safety-Capable with documentation available to aid in functional safety system design
Applications
- Automotive bipolar stepper motors
- Headlight position adjustment
- Head-up display (HUD)
- HVAC stepper motors
- Electronic fuel injection (EFI)
Q & A
- What is the operating supply voltage range of the DRV8889-Q1?
The operating supply voltage range is from 4.5 to 45 V.
- What is the maximum full-scale current supported by the DRV8889-Q1?
The maximum full-scale current is 1.5 A.
- What is the microstepping resolution of the DRV8889-Q1?
The microstepping resolution is up to 1/256 levels.
- What package types are available for the DRV8889-Q1?
The DRV8889-Q1 is available in HTSSOP (24 pins) and VQFN (24 pins) packages.
- What are the key protection features of the DRV8889-Q1?
The key protection features include VM undervoltage lockout, overcurrent protection, stall detection, open load detection, overtemperature warning and shutdown, and undertemperature warning.
- How does the DRV8889-Q1 minimize EMI?
The device uses spread spectrum clocking to minimize EMI.
- What is the purpose of the integrated current sense functionality?
The integrated current sense functionality eliminates the need for two external sense resistors, saving board space and cost.
- Can the DRV8889-Q1 be used in automotive applications?
- What is the low-current sleep mode current of the DRV8889-Q1?
The low-current sleep mode current is 2 µA.
- How many devices can be connected in series using the SPI interface?
Up to 63 devices can be connected in series using the SPI interface with daisy chain support.
