Energy Efficient Innovations

Product Overview  


For complete documentation, see the data sheet.

Printed On: 7/11/2015

LV8774Q: PWM Constant-Current Control Stepper Motor Driver

Product Description
The LV8774Q is a 2-channel H-bridge driver IC, and can drive a stepper motor or two brushed DC motors. A stepper motor driver supports micro-step drive with 1/16-step resolution, and two brushed motor drivers support forward, reverse, brake, and standby functions. It is ideally suited for driving brushed DC motors and stepper motors used in office equipment and amusement applications.
Features   Benefits
     
  • Low on resistance
    (upper side : 0.3Ω, lower side : 0.25Ω, total of upper and lower : 0.55Ω ; Ta = 25°C, IO = 2A)
 
  • High Efficiency
  • Micro-step mode can be set to Full-step, Half-step, Quarter-step, or 1/16-step
 
  • Various Step Adjustment Available
  • Excitation step proceeds only by step signal input withstepper motor
 
  • Easy Control for Micro-step Drive
  • Motor current selectable in four steps
 
  • Low Consumption
  • Output short-circuit protection circuit
    (selectable from latch-type or auto-reset-type)
 
  • Safty Design
  • Unusual condition warning output pins
 
  • Safty Design
  • Single-channel PWM current control stepper motor driver
    (or two DC motor driver)
   
  • BiCDMOS process IC
   
  • No control power supply required
   
Applications   End Products
  • Stepper/Brush DC Motors
  • Computing & Peripherals
  • Industrial
 
  • Printers
  • Flatbed Scanner
  • Inkjet Printer
  • Multi-Function Printer
  • Document Scanner
Selected Electrical Specifications

Product Compliance Status Description Type VM Min (V) VM Max (V) VCC Min (V) VCC Max (V) IO Max (A) IO Peak Max (A) Step Resolution Control Type Feedback Method Current Sense Regulator Output Fault Detection Flyback Protection RDS(on) Typ (Ω) Package Type
 Pb-free   Active     PWM Constant-Current Control Stepper Motor Driver, PWM Constant-Current Control Stepper Motor Driver   Stepper/ Brush DC   9   32       2   2.5 
 1 
 1/16 
 1/2 
 1/4 
 Clock 
 Parallel 
   External Resistor   
 Over-Current 
 Thermal 
   0.55   QFN-44 / VQFN-44L 
Package Availability
Type
PB free
Standard
QFN-44 / VQFN-44L x