LB11921T中文资料3-Phase Brushless Motor Driver数据手册ONSEMI规格书

描述 Description

LB11921T is a pre-driver IC designed for variable speed control of 3-phase brushless motors. It can be used to implement a motor drive circuit with the desired output capacity (voltage, current) by using discrete transistors for the output stage. It implements direct PWM drive for minimal power loss. Because the LB11921T includes an integrated VCO circuit, applications can control the motor speed arbitrarily by varying the external clock frequency.

特性 Features

• Direct PWM drive output
• Speed discriminator + PLL speed control circuit
• Speed lock detection output
• Integrated VCO circuit
• Forward/reverse switching circuit
• Braking circuit (short braking)
• Full complement of on-chip protection circuits, including lock protection, current limiter, and thermal shutdown protection circuits.

应用 Application

• Computing & Peripherals
• OA equipment
• Multi-Function Printer
• PC

简介

LB11921T属于集成电路（IC）的电机驱动器控制器。由制造生产的LB11921T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。