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LB1868M - Two-Phase Brushless Fan Motor Driver

Description

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

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 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 curren.

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Full PDF Text Transcription

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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. Package Dimensions unit: mm 3111-MFP14S [LB1868M] 14 8 0.625 1.
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