The DRV8821DCA is a dual bipolar microstepping-capable Stepper Motor Controller/Driver with 1/8 microstepping indexer (step/direction control). It is designed 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 overcurrent protection, short-circuit protection, under-voltage lockout and over-temperature.
- Built-in micro stepping indexers
- Three-bit winding current control allows up to eight current levels
- Low MOSFET on-resistance
- Internal charge pump for gate drive
- Built-in 3.3V reference
- Simple step/direction interface
- Indexer control I/F
- 8 Current regulation levels
- Green product and no Sb/Br
电机驱动与控制, 计算机和计算机周边, 建筑自动化, 机器人, 工业
(EN)
