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TDA2003-TA5-T Arkusz danych(PDF) 7 Page - Unisonic Technologies

Numer części TDA2003-TA5-T
Szczegółowy opis  10W CAR RADIO AUDIO AMPLIFIER
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Producent  UTC [Unisonic Technologies]
Strona internetowa  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

TDA2003-TA5-T Arkusz danych(HTML) 7 Page - Unisonic Technologies

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TDA2003
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
7 of 10
www.unisonic.com.tw
QW-R107-002,F
BUILT-IN PROTECTION SYSTEMS(Cont.)
THERMAL SHUT-DOWN
The presence of a thermal limiting circuit offers the following advantages:
(1) An overload on the output (even if it is permanent),or an excessive ambient temperature can be easily withstood.
(2) The heat-sink can have a smaller factor compared with that of a conventional circuit. There is no device damage
in case of excessive junction temperature: all that happens is that Po ( and therefore PD) and Id are reduced.
COMPONENTS USAGE SUGGESTION
The recommended values of the components are those shown on typical application circuit Different values can
be used. The following table can help the designer.
COMPONENT RECOMMENDED
VALUE
PURPOSE
LARGE THAN
RECOMMENDED VALUE
SMALLER THAN
RECOMMENDED VALUE
R1
(Gv-1)*R2
gain setting.
increase of drain current
R2
2.2
Ω
gain and SVR setting.
Decrease of SVR
R3
1
Ω
Frequency stability
Danger of oscillation at high
frequencies with inductive
loads.
Rx
≈20R2
Upper frequency cutoff
Poor high frequencies
attenuation
Danger of oscillation
C1
2.2
μF
Input DC decoupling
Noise at switch-on
switch-off
C2
470
μF
Ripple rejection
Decrease of SVR
C3
0.1
μF
Supply voltage bypass
Danger of oscillation
C4
1000
μF
Supply voltage bypass
Higher low frequency
cutoff
C5
0.1
μF
Frequency stability
Danger of oscillation at
high frequencies with
inductive loads.
Cx
≈1/(2π*B*R1)
Upper frequency cutoff
Lower bandwidth
Larger bandwidth


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