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, undervoltage 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

• Number of full bridges
• 4
• Vs (Min) (V)
• 8
• Vs ABS (Max) (V)
• 34
• Full-scale current (A)
• 1.5
• Peak output current (A)
• 1.5
• RDS(ON) (HS + LS) (mOhms)
• 550
• Sleep current (uA)
• 20
• Control mode
• STEP/DIR
• Control interface
• Hardware (GPIO)
• Micro-stepping levels
• 8
• Features
• Current Regulation
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 85

DRV8821的完整型号有：DRV8821DCA、DRV8821DCAR，以下是这些产品的关键参数及官网采购报价：

DRV8821DCA，工作温度：-40 to 85，封装：HTSSOP (DCA)-48，包装数量MPQ：40个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网DRV8821DCA的批量USD价格：2.323（1000+）

DRV8821DCAR，工作温度：-40 to 85，封装：HTSSOP (DCA)-48，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网DRV8821DCAR的批量USD价格：1.936（1000+）

DRV8821EVM DRV8821 评估模块

DRV8821 是一款双路步进电机控制器评估模块，它包含器件、布线和软件，可简化对用于驱动客户电机的器件的评估过程。