描述 Description

The LB11850VA is a single-phase bipolar fan motor driver with speed control function that works with a speed feedback signal. A highly efficient, quiet and low power consumption motor driver circuit, with a high speed accuracy and large variable speed can be implemented by adding a small number of external components. This pre-driver is optimal for driving large scale fan motors (with large air volume and large current) such as those used in servers and consumer products.

特性 Features

? Pre-driver for single-phase full-wave drive
? On-chip speed control circuit
? External PWM input or analog voltage input enabling variable speed control
? On-chip soft start circuit
? Reactive current cut circuit incorporated
? Constraint protection and automatic reset functions incorporated
? FG (speed detection), RD (lock detection) output
? Constant-voltage output pin for hall bias

簡介

LB11850VA屬于集成電路（IC）的電機驅(qū)動器控制器。由制造生產(chǎn)的LB11850VA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(guān)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(yù)期負(fù)載和預(yù)期應(yīng)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。