LB1868 Datasheet (ON Semiconductor)

LB1868, Fan Motor Driver

Ordering number : EN6202A LB1868 Monolithic Digital IC 2-phase Brushless Fan Motor Driver http://onsemi.com Overview The LB1868 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 installati

LB1868 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 resis