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.

應用 Application

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

簡介

LB11921T屬于集成電路（IC）的電機驅(qū)動器控制器。由制造生產(chǎn)的LB11921T電機驅(qū)動器，控制器產(chǎn)品屬于電機驅(qū)動器和控制器電源管理集成電路 (PMIC) 系列，可用于控制或操作從某電源施加到電機或相關機電執(zhí)行器的電源。所實現(xiàn)的具體功能和特性集根據(jù)預期負載和預期應用的特性有很大差異，范圍從用于有刷電機的簡單開環(huán)速度控制到基于步進電機的高級閉環(huán)運動控制。