LB11861MC-AH Datasheet, PDF (1/5 Pages) ON Semiconductor – Single-Phase Full-Wave Fan Motor Driver

Ordering number : ENA2023
LB11861MC
Monolithic Digital IC
Single-Phase Full-Wave
Fan Motor Driver
http://onsemi.com
Overview
The LB11861MC is a single-phase bipolar drive motor driver that easily implements direct PWM motor drive systems
with excellent efficiency. The LB11861MC is optimal for fan motor drive in personal computer power supply systems
and CPU cooling fan systems.
Features
• Single-phase full-wave drive (16V, 1.2A transistors are built in)
• External PWM control pin incorporated (f=16k to 50kHz)
External PWM signal DUTY control to enable speed control to stop, medium speed, and full speed
Slow-Decay regeneration to enable low power consumption and high-efficiency rotation control
• Soft switching circuit incorporated
Soft-SW circuit achieving small loss, low noise, and low vibration at a time of phase shift
•Built-in regenerative diode (Di); only requires a minimal number of external components.
• Built-in lock protection and automatic recovery circuits
• FG (speed detection) outputs incorporated
• Built-in thermal shutdown circuit.
Semiconductor Components Industries, LLC, 2013
May, 2013
31412 SY 20120127-S00003 No.A2023-1/5