LB1868M-TLM-E集成電路（IC）的全半橋驅動器規(guī)格書PDF中文資料

LB1868M-TLM-E屬于集成電路（IC）的全半橋驅動器。由安森美半導體公司制造生產的LB1868M-TLM-E全半橋驅動器器件屬于電橋驅動器電源管理集成電路 (PMIC) 系列，包含兩個或多個功率晶體管，以及在外部器件控制下將其用作開關所需的電路。這些晶體管通常在內部配置為成對串聯(lián)連接（稱為半橋），因而任意指定晶體管對之間的結點都可以連接至兩個電源軌中的任一個。這類器件常用于將控制器件（如微控制器）提供的低電平信號轉換為操作執(zhí)行器（如步進電機或無刷電機）所需的較大功率信號。

Overview

The LB1868M is a 2-phase unipolar brushless motor driver. With only a few peripheral parts, lockup protection and automatic recovery can be implemented. The IC can be configured for 12V or 24V operation and a wide range of variations, from Low speed to H-High speed and from 60cm to 120cm square using the same PCB. This makes it easy to design highly reliable fan motor installations.

Features

● Output protection Zener diode with variable withstand voltage

Z1, Z2 pins open: VOLM = 57V (24V specification)

Z1, Z2 pins shorted: VOLM = 32V (12V specification)

External Zener diode connected across Z1 - VCC pins:

support for fans with large drive current

● External resistor allows configuration for 12V or 24V

● Direct Hall element connection possible (built-in Hall amplifier

with hysteresis supports core without auxiliary electrode)

● Built-in output transistor with 1.0A output current

(strengthened negative-current support for core without auxiliary

electrode)

● Built-in rotation detection function: Low during rotation and High during stop

● Built-in lockup protection with automatic recovery

● ST pin for motor stop/drive (for standby mode of copiers etc.)

● FG output pin for rotation detection

● BC pin for kickback noise reduction (with 2 external capacitors)

● Built-in thermal shutdown