Block Diagram
LB1838JM
VCC
VS2
VS1
10µF
IN1
ENA1
60kΩ
80kΩ
60kΩ
80kΩ
Thermal shutdown
OUT1
Stepping
Motor
OUT2
60kΩ
IN2
80kΩ
ENA2
GND
60kΩ
80kΩ
OUT3
OUT4
GND
Vcont
* : As long as the voltages applied to VCC, VS1, VS2, ENA1, ENA2, IN1 and IN2 are within the limits set by the
absolute maximum ratings, there are no restrictions on the relationship of each voltage level in comparison
with the others (regarding which is higher or lower). (ex. VCC = 3V, VS1, 2 = 2V, ENA = IN = 5V)
Truth Table
IN1/2
L
H
L
H
ENA1/2
H
H
L
L
OUT1/3
H
L
OFF
OFF
OUT2/4
L
H
OFF
OFF
Mode
Forward
Reverse
Standby
Standby
No.A0927-3/5