LB11946: PWM Current Control Stepping Motor Driver

LB11946 is a PWM current control stepper motor driver that implements PWM control bipolar drive with a fixed off time. It features 15 current setting levels using a fixed VREF voltage and support for micro-stepping drive from 1-2 phase excitation drive to 4W1-2 phase excitation drive. This device is optimal for driving stepper motors such as those used for carriage drive and paper feed in printers.

Features
  • PWM current control, with a fixed off time
  • Logic input serial-parallel converter (allows 1-2,W1-2, 2W1-2 and 4W1-2 phase excitation drive)
  • Current attenuation switching function (with slow decay, fast decay, and mixed decay modes)
  • Integrated upper and lower side diodes
Applications
  • Stepper Motors
End Products
  • Printers
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
PWM Current Control Stepper Motor DriverLB11946/D (121.0kB)0
Package Drawings (1)
Document TitleDocument ID/SizeRevision
PDIP30 / DIP30SD (400 mil)646AZ (58.5kB)A
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
LB11946-EActivePb-freePDIP-30646AZNAFan-Fold20$4.1927
Specifications
ProductVM Min (V)VM Max (V)VCC Min (V)VCC Max (V)IO Max (A)IO Peak Max (A)Step ResolutionControl TypeFeedback MethodCurrent SenseRegulator OutputFault DetectionFlyback ProtectionRDS(on) Typ (Ω)
LB11946-E10453711.2½SerialExternal ResistorUVLO
PWM Current Control Stepper Motor Driver (121.0kB) LB11946
PDIP30 / DIP30SD (400 mil) LB1945D