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TDA7803A-QLX Datasheet(PDF) 2 Page - STMicroelectronics

Part # TDA7803A-QLX
Description  High efficiency digital input automotive quad power amplifier with built-in diagnostics features, start stop compatible
PDF  72 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7803A-QLX Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
TDA7803A
2/72
DS12195 Rev 7
Contents
1
Block diagram and pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2
Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2
Application diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3
Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.4
Electrical characteristics typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4
Operation states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1
Standby state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2
ECO-mode state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3
Amplifier-mode state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.4
Turn-on and permanent diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5
Operation compatibility vs. battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.1
Voltage regulators timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.2
Turn-on diagnostic description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3
Permanent diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.4
AC diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.5
Input offset detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.6
Double faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.7
Thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.8
Voltage monitoring feature and ADC characteristics . . . . . . . . . . . . . . . . 33
6.9
Mute management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.9.1
Auto-mute threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.9.2
Mute and unmute commutation time . . . . . . . . . . . . . . . . . . . . . . . . . . . 35



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