LA6581DM: Single-Phase Full-Wave BTL Fan Motor Driver

The LA6581DM is a low-saturation BTL output linear driving motor driver for single-phase bipolar fan motors. It features quite, low power, high efficiency drive that suppresses reactive current. It is optimal for use in applications that require miniaturization and low noise, such as CPU cooling fan motors and 5 to 12V electronic game products.

Features
  • Single-phase full-wave linear drive with BTL output (gain resistance 500Ω to 284kΩ, 55dB) : Suitable for the equipment requiring silent operation, such as game equipment, CPU cooler, etc. because of its freedom from switching noise.
  • Low-voltage operation possible, with wide operable voltage range (2.2 to 16V)
  • Low saturation output (Upper + lower saturation voltage : VOsat (total) = 0.3V typ, IO = 100mA) : High coil efficiency with low current drain. IC itself does not generate much heat.
  • High impedance of Hall input pin
  • FG output (rotation speed detection output : open collector output)
  • Heat protection circuit : When the large current flows because of output short-circuit, raising the IC chip temperature above 180°C, the heat protection circuit suppresses the drive current, preventing IC burn and breakdown.
  • Extra-small package (Micro8)Small substrate while allowing larger blades
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Single-Phase Full-Wave BTL Fan Motor DriverENA2264/D (355kB)0
Package Drawings (1)
Document TitleDocument ID/SizeRevision
Micro 8 lead Surface Mount846A-02 (57.7kB)J
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
LA6581DMR2GActivePb-free Halide freeMicro8™846A-021Tape and Reel4000$0.46
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
LA6581DMR2G12.2162.2160.360.5DCNoneThermal
Single-Phase Full-Wave BTL Fan Motor Driver (355kB) LA6581DM
Micro 8 lead Surface Mount CM1216