DescriptionThe TDA2009A is class AB dual Hi-Fi Audio power amplifier assembled in Multi watt Ò package, specially designed for high quality stereo application as Hi-Fi and music centers.
Build-In Protection Systems
The presence of a thermal limiting circuit offers the following advantages:
- an averload on the output (even if it is permanent), or an excessive ambient temperature can be easily withstood.
- 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 Io are reduced.
The power dissipated in the circuit must be removed by adding an external heatsink. Thanks to the MULTIWATT Ò package attaching the heatsink is very simple, a screw or a compression spring (clip) being sufficient. Between the heatsink and the package it is better to insert a layer of silicon grease, to optimize the thermal contact, no electrical isolation is needed between the two