LB1847中文资料LB1847: PWM Current Control Type Stepper Motor Driver数据手册ONSEMI规格书

描述 Description

The LB1847 is a driver IC for stepper motors with PWM current control bipolar drive (fixed OFF time). A special feature of this IC is that VREF voltage is constant while the current can be set in 15 steps, allowing drive of motors ranging from 1-2 phase exciter types to 4W 1-2 phase exceiter types.The current decay pattern can also be selected (SLOW DECAY, FAST DECAY, MIX DECAY) to increase the decay of regenerative current at chopping OFF, thereby improving response characteristics.This is expecially useful for carriage and paper feed stepping motors in pricinters and similar applications where high-precision control and low vibrations are required.

特性 Features

PWM current control (fixed OFF time)
Load current digital selector
Selectable current decay pattern
Simultaneous ON prevention function
Noise canceller
built-in thermal shutdown circuit
built-in logic low-voltage OFF circuit

应用 Application

Carriage and paper feed stepping motors in printers and similar applications

简介

LB1847属于集成电路（IC）的电机驱动器控制器。由ONSEMI制造生产的LB1847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。