Energy Efficient Innovations

Product Overview  


For complete documentation, see the data sheet.

Printed On: 7/11/2015

LV8702V: PWM Current Control High-Efficiency Stepper Motor Driver

Product Description
The LV8702V is a 2-channel Full-bridge driver IC that can drive a stepper motor driver, which is capable of micro-step drive and supports quarter step. Current is controlled according to motor load and rotational speed at half step, half step full-torque and quarter step excitation, thereby highly efficient drive is realized. Consequently, the reduction of power consumption, heat generation, vibration and noise is achieved.
Features
 
  • Built-in 1ch PWM current control stepper motor driver (bipolar type)
  • Ron (High-side Ron: 0.3Ω, Low-side Ron: 0.25Ω, total: 0.55Ω, Ta = 25°C, IO = 2.5A)
  • Micro-step mode is configurable as follows: full step/half step full-torque/half step/quarter step
  • Excitation step moves forward only with step signal input
  • Built-in output short protection circuit (latch method)
  • Control power supply is unnecessary
  • Built-in high-efficient drive function (supports half step full-torque/half step/quarter step excitation mode)
  • Built-in step-out detection function (Step-out detection may not be accurate during high speed rotation)
  • IO max=2.5A
  • Built-in thermal shut down circuit
Applications   End Products
  • Stepper
  • Computing & Peripherals
  • Industrial
 
  • Printer
  • Scanner
  • Surveillance camera(CCTV)
  • Textile machine
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 
 Halide free 
 Active     PWM Current Control High-Efficiency Stepper Motor Driver   Stepper   9   32   9   32   2.5   3 
 ½ 
 1 
 ¼ 
 Clock     External Resistor   
 Over-Current 
 Thermal 
 UVLO 
   0.55   SSOP-44J EP 
 Pb-free 
 Halide free 
 Active     PWM Current Control High-Efficiency Stepper Motor Driver   Stepper   9   32   9   32   2.5   3 
 ½ 
 1 
 ¼ 
 Clock     External Resistor   
 Over-Current 
 Thermal 
 UVLO 
   0.55   SSOP-44J EP 
Package Availability
Type
PB free
Standard
SSOP-44J EP x