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LA5587 Datasheet(PDF) 2 Page - Sanyo Semicon Device

Part # LA5587
Description  General-Purpose Compact DC Moter Speed Controller
PDF  3 Pages
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA5587 Datasheet(HTML) 2 Page - Sanyo Semicon Device

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LA5587
No.2574–2/3
Equivalent Circuit Block Diagram and Test Circuit
Continued from preceding page.
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∆Vref
Vref
/
∆VCC
∆K
K
/
∆VCC
∆Vref
Vref
/
∆Im
∆K
K
/
∆Im
∆Is
Is
/
∆VCC
∆Vref
Vref
/
∆Ta
∆K
K
/
∆Ta
VCC=12V, Im=10mA, Ta=–20 to +80°C
VCC=12V, Im=50–150mA, Ta=–20 to +80°C
%/˚C
%/˚C
Sample Application Circuit
From Im · Rm + EO=RT (IS +
) + Vref,
EO=Vref + RT (1 +
) IS + (
–Rm) Im
Assuming K · Rm=RT,
The number of revolutions is determined by
EO=Vref + RT (1 +
) IS
Unless RT (max) < K · Rm (min) in the Sample
Application Circuit, the operation becomes
unstable.
IS + Im
K
1
K
RT
K
1
K



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