LB11861MC: Single-Phase Full-Wave Fan Motor Driver

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 speedSlow-Decay regeneration to enable low power consumption and high-efficiency rotation control
  • Soft switching circuit incorporatedSoft-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.
Applications
  • PC Power Supply system
  • CPU Cooling Fan System
End Products
  • Server
  • PC
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Single-phase Full-wave Fan Motor Driver ICENA2023/D (64.0kB)0
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOIC10W / MFP10SK (225 mil)751DA (55.8kB)A
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
LB11861MC-AHActivePb-free Halide freeSOIC-10 W / MFP-10SK751DA3Tape and Reel1000$0.4133
Specifications
ProductPhaseVM Min (V)VM Max (V)VCC Min (V)VCC Max (V)IO Max (A)IO Peak Max (A)Control TypeCurrent SenseRegulator OutputFault Detection
LB11861MC-AH14.5164.5161.2PWMNoneThermal
Single-phase Full-wave Fan Motor Driver IC (64.0kB) LB11861MC
SOIC10W / MFP10SK (225 mil) LB1948MC