LV8760T_11 Datasheet, PDF (8/11 Pages) Sanyo Semicon Device – Forward/Reverse H-bridge Driver

DC Motor Driver
1.DCM output control logic
Contol Input
PS
IN1
IN2
L
*
*
H
L
L
H
H
L
H
L
H
H
H
H
2.Current limit control timing chart
LV8760T
Output
OUTA
OUTB
OFF
OFF
OFF
OFF
H
L
L
H
L
L
Output current
Limit current
Mode
Standby
Output OFF
CW (forward)
CCW (reverse)
Brake
OUTA
OUTB
toff
CHARGE
SLOW
Braking operation time in current limit mode can be set by connecting a capacitor between SCP and GND pins. This
setting is the same as the time setting required to turn off the outputs when an output short-circuit occurs as explained in
the section entitled "Output Short-circuit Protection Function." See "Output Short-circuit Protection Function," for the
settinig procedure.
3.Setting the current limit value
The current limit value of the DCM driver is determined by the VREF voltage and the resistance (RNF) connected
across the RNF and GND pins using the following formula :
Ilimit [A] = (VREF [V] /5) /RNF [Ω])
Assuming VREF = 1.5V, RNF = 0.2Ω, the current limit is :
Ilimit = 1.5V/5/0.2Ω = 1.5A
No.A1157-8/11