Overview:
The LV8704JA is a 2-channel Full-bridge driver IC that can drive a stepping 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 phase, half full-torque and quarter phase excitation, thereby highly efficient drive is realized.
Consequently, the reduction of power consumption, heat generation, vibration and noise is achieved.
Feature:
・Built-in 1ch PWM current control stepping motor driver (bipolar type)
・BiCDMOS process IC
・Ron (Upper Ron: 0.6Ω, lower Ron: 0.4Ω, total: 1.0Ω, Ta=25ºC, Io=1.5A)
・Excitation mode is configurable as follows: full step/ half step full-torque/ half step/ quarter step
・Excitation step moves forward only with step signal input
・Iomax=1.5A
・Built-in output short protection circuit (latch method)
・Built-in thermal shut down circuit
・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)
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