DRV8821是TI公司的一款集成FET的步进栅极驱动器产品，DRV8821是具有 1/8 微步进分度器的 1.5A 双路双极步进电机驱动器（Step/Dir 控制器），本页介绍了DRV8821的产品说明、应用、特性等，并给出了与DRV8821相关的TI元器件型号供参考。
DRV8821 - 具有 1/8 微步进分度器的 1.5A 双路双极步进电机驱动器（Step/Dir 控制器） - 集成FET的步进栅极驱动器 - 步进驱动器 - TI公司（Texas Instruments，德州仪器）
The DRV8821 provides a dual microstepping-capable stepper motor controller/driver solution for printers, scanners, and other office automation equipment applications.
Two independent stepper motor driver circuits include four H-bridge drivers and microstepping-capable indexer logic. Each of the motor driver blocks employ N-channel power MOSFETs configured as an H-bridge to drive the motor windings.
A simple step/direction interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step, half-step, quarter-step, or eighth step modes, and the selection of slow or mixed decay modes.
Internal shutdown functions are provided for over current protection, short circuit protection, under voltage lockout and overtemperature.
The DRV8821 is packaged in a 48-pin HTSSOP package (Eco-friendly : RoHS & no Sb/Br).
- Dual PWM microstepping motor driver
- Built-In Microstepping Indexers
- Up to 1.5-A Current Per Winding
- Three-Bit Winding Current Control Allows up to Eight Current Levels
- Low MOSFET On-Resistance
- Selectable Slow or Mixed Decay Modes
- 8-V to 32-V Operating Supply Voltage Range
- Internal Charge Pump for Gate Drive
- Built-in 3.3-V Reference
- Simple Step/Direction Interface
- Fully Protected Against Undervoltage, Overtemperature, and Overcurrent
- Thermally Enhanced Surface Mount Package
- APPLICATIONS
- Printers
- Scanners
- Office Automation Machines
- Gaming Machines
- Factory Automation
- Robotics
PowerPad Is a trademark of Texas Instruments.
