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LB1838M Folha de dados(PDF) 3 Page - Sanyo Semicon Device

Nome de Peças LB1838M
Descrição Electrónicos  Low-Voltage, Low-Saturation Bidirectional Motor Driver
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Fabricante Electrônico  SANYO [Sanyo Semicon Device]
Página de início  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB1838M Folha de dados(HTML) 3 Page - Sanyo Semicon Device

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LB1838M
No.3949-3/5
Vcont
IN
OUT
OUT
M
ID
VZ
VCC
VS
ID =
VZ
r
( = Constant)
Block Diagram
VCC
OUT3
VS1
OUT4
GND
Vcont
GND
ENA2
VS2
IN2
60k
80k
60k
80k
OUT1
OUT2
ENA1
IN1
60k
80k
60k
80k
Stepping
Motor
10
µF
Thermal
shutdown
Note: 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
ENA1,2
OUT1,3
OUT2,4
Mode
L
H
H
L
Forward
H
H
L
H
Reverse
L
L
OFF
OFF
Standby
H
L
OFF
OFF
Standby
Vcont pin
As shown in the left diagram, the Vcont pin outputs the voltage
of the band gap Zener VZ +VF (= 1.93V).
In normal use, this pin is left open.
The drive current ID is varied by the Vcont voltage. However,
because the band gap Zener is shared, it functions as a bridge.


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