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TDA2004R View Datasheet(PDF) - STMicroelectronics

Part Name
Description
MFG CO.
TDA2004R
ST-Microelectronics
STMicroelectronics ST-Microelectronics
'TDA2004R' PDF : 17 Pages View PDF
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TDA2004R
3.1.7
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 heatsink can have a smaller factor of safety compared with that of a conventional
circuit. There is no device damage in the case of excessive junction temperature: all
that happens is that Po (and therefore Ptot) and Id are reduced.
The maximum allowable power dissipation depends upon the size of the external heatsink
(i.e. its thermal resistance); Figure 18 shows the power dissipation as a function of ambient
temperature for different thermal resistance.
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Doc ID 17614 Rev 2
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