DRV8821数据手册集成电路（IC）的电机驱动器控制器规格书PDF

描述 Description

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).

特性 Features

• 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