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TDA7285 Datenblatt(PDF) 8 Page - STMicroelectronics

Teilenummer TDA7285
Bauteilbeschribung  STEREO CASSETTE PLAYER AND MOTOR SPEED CONTROLLER
PDF  11 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7285 Datenblatt(HTML) 8 Page - STMicroelectronics

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Eg
= RT Id + IM (
RT
K
− RM )+ Vref
[1
+
Rb
RS
+
RT
RS
( 1 +
1
K
) ]
RS has to be adjusted so that the applied voltage
VM is suitable for a given motor, the speed is then
linearly adjustable varing RB.
The value RT is calculated so that
RT (max.) >K(min.) *RM (min.)
if RT (max.) >K * RM, instability may occur.
The values of C15 (4.7
µF typ.) and C14 (1µF
typ.) depend on the type of motor used. C15 ad-
justs WOW and flutter of the system. C14 sup-
presses motor spikes.
APPLICATION INFORMATION
Figure 21.
TDA7285
8/11



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