DRV8818是TI公司的一款集成FET的步进栅极驱动器产品，DRV8818是具有片上 1/8 微步进分度器的 2.5A 双极步进电机驱动器（Step/Dir 控制器），本页介绍了DRV8818的产品说明、应用、特性等，并给出了与DRV8818相关的TI元器件型号供参考。
DRV8818 - 具有片上 1/8 微步进分度器的 2.5A 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）
- Pulse Width Modulation (PWM) Microstepping Motor Driver
- Built-In Microstepping Indexer
- Up to 1/8 Microstepping
- Step and Direction Control
- Programmable Mixed Decay, Blanking, and Off Time
- Up to 2.5-A Current Per Winding
- Low 0.37-Ω (HS + LS) MOSFET RDS(ON) (25°C)
- 8-V to 35-V Operating Supply Voltage Range
- Pin to Pin Upgrade for DRV8811 With Lower RDS(ON)
- Thermally Enhanced Surface Mount Package
- Protection Features
- VM Undervoltage Lockout (UVLO)
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Fault Condition Indication Pin (nFAULT)
- Printers
- Textile Machinery
- Positioning/Tracking
- Factory Automation
- Robotics
The DRV8818 provides an integrated stepper motor driver solution for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers, as well as microstepping indexer logic to control a stepper motor.
The output driver block for each consists of N-channel power MOSFETs configured as full H-bridges to drive the motor windings.
A simple STEP/DIRECTION interface allows easy interfacing to controller circuits. The mode pins allow for configuration of the motor in full-step, half-step, quarter-step, or eighth-step modes. Decay mode and PWM off time are programmable.
Internal shutdown functions are provided for over current protection, short circuit protection, under-voltage lockout and overtemperature.
The DRV8818 is packaged in a PowerPAD™ 28-pin HTSSOP package with PowerPAD™ (Eco-friendly: RoHS and no Sb/Br).
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| DRV8818 | HTSSOP (28) | 9.70 mm x 4.40 mm |
