LB1868M - Two-Phase Brushless Fan Motor Driver
Pin name IN * IN+ CT Z1 Z2 OUT1 OUT2 VIN GND RD FG ST BC Function Hall input + pin Hysteresis amplifier Hall input * pin Hysteresis amplifier Lockup protection time setting capacitor pin (0.47 to 4.7 µF) External Zener diode pin (external Zener diode to be connected between power supp
Ordering number : ENN6203 LB1868M Monolithic Digital IC LB1868M Two-Phase Brushless Fan Motor Driver 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 60 cm to 120 cm square using the same PCB.
This makes it easy to design highly reliable fan motor installations.
LB1868M 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 between Z1 and VCC pins: support for fans with large drive current External resistor allows conf
