L272 データシートの表示（PDF） - STMicroelectronics
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L272 Datasheet PDF : 10 Pages
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L272
Figure 12 : Motor Current Control Circuit.
Note : The input voltage level is compatible with L291 (5-BIT D/A converter).
Figure 13 : Bidirectional Speed Control of DC Motors.
For circuit stability ensure that RX >
2R3 °
RM
R1
where
RM
=
internal
resistance
of
motor.
The voltage available at the terminals of the motor is VM
= 2 (Vi
⋅ Vs
2
) + Ro ⋅
ΙM
where
Ro
=
2R ° R1
RX
and IM is the motor current.
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