LV8727 Datasheet, PDF (19/23 Pages) Sanyo Semicon Device – PWM Current Control Stepping Motor Driver

LV8727
(13) Output short-circuit protection circuit
Built-in output short-circuit protection circuit makes output to enter in stand-by mode. This function prevents the IC
from damaging when the output shorts circuit by a voltage short or a ground short, etc. When output short state is
detected, short-circuit detection circuit state the operating and output is once turned OFF. Subsequently, the output is
turned ON again after the timer latch period ( typ. 256μs ). If the output remains in the short-circuit state, turn OFF the
output, fix the output to the wait mode, and turn ON the EMO output.
When output is fixed in stand-by mode by output short protection circuit, output is released the latch by setting ST =
“L”.
H-bridge
output state
Output ON
Output OFF
Output ON
Standby state
Short-circuit
detection state
Short- Release
circuit
Short-circuit
Internal counter
1st counter 1st counter 1st counter
start
stop
start
1st counter
end
2nd counter 2nd counter
start
end
No.A1998-19/23