LV8740V中文资料Stepper Motor Driver, PWM, Constant Current Control数据手册ONSEMI规格书

描述 Description

The LV8740V is a 2-channel H-bridge driver IC that can switch a stepper motor driver, which is capable of micro-step drive and supports Quarter-step excitation, and two channels of a brushed DC motor driver, which supports forward, reverse, brake, and standby of a motor. It is ideally suited for driving brushed DC motors and stepper motors used in office equipment and amusement applications.

特性 Features

• On resistance (upper side : 0.3Ω ; lower side : 0.2Ω ; total of upper and lower : 0.5Ω ; Ta = 25°C, IO = 2.5A)
• Good Thermal Performance, High efficiency
• Excitation mode can be set to Full-step, Half-step full torque, Half-step , or Quarter-step
• Various Step Adjustment Available
• Motor holding current selectable in four steps
• Low Consumption
• Output short-circuit protection circuit (selectable from latch-type or auto reset-type) incorporated
• Safety design
• Built-in thermal shutdown circuit
• Thermal protection
• No control power supply required
• Easy Design
• Single-channel PWM current control stepper motor driver (selectable with DC motor driver channel 2) incorporated.
• BiCDMOS process IC
• Excitation step proceeds only by step signal input
• Unusual condition warning output pins
• Forward/Reverse/Brake/Stand-by Function

应用 Application

• Computing & Peripherals
• Industrial
• Flatbed Scanner
• Inkjet Printer
• Multi-Function Printer
• Document Scanner
• Slot Machine
• Vending Machine
• Cash Machine

简介

LV8740V属于集成电路（IC）的电机驱动器控制器。由ONSEMI制造生产的LV8740V电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。