LB1929: Three-Phase Brushless Motor Driver for Office Automation Equipment

The LB1929 is a 3-phase brushless motor driver well suited for drum and paper feed motors in laser printers, plain-paper copiers and other office automation equipment. Direct PWM drive allows control with low power losses. Peripheral circuitry including speed control circuit and FG amplifier is integrated, thus allows drive circuit to be constructed with a single chip.

Features
  • 3-phase bipolar drive (30V, 3.5A)
  • Direct PWM drive technique
  • Built-in diode for absorbing output lower-side kickback
  • Speed discriminator and PLL speed control
  • Speed lock detection output
  • Built-in forward/reverse switching circuit
  • Built-in protection circuitry includes current limiter, overheat protection, motor restraint protection, etc.
End Products
  • LBP/PPC
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Three-phase Brushless Motor Driver IC for Office Automation EquipmentEN7099/D (266.0kB)0
Package Drawings (1)
Document TitleDocument ID/SizeRevision
PDIP30 / DIP30SD (400 mil)646AZ (58.5kB)A
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
LB1929-EActivePb-freePDIP-30646AZNAFan-Fold20$3.4799
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
LB1929-E39.5289.5283.5ClockExternal ResistorOver-Current
Three-phase Brushless Motor Driver IC for Office Automation Equipment (266.0kB) LB1929
PDIP30 / DIP30SD (400 mil) LB1945D