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TDA2003 Datasheet(PDF) 6 Page - Tiger Electronic Co.,Ltd |
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TDA2003 Datasheet(HTML) 6 Page - Tiger Electronic Co.,Ltd |
6 / 8 page ![]() TDA2003 Inductive load A protection diode is provide between pin 4 and pin 5(see the internal schematic diagram) to allow use of the TDA 2003 with inductive lo ads. In particular, the TDA 2003 can drive a coupling transformer for audio modulation. DC voltage The maximu m operating DC voltage on the TDA 2003 is 18V. However the device can withstand a DC voltage up to 28V with no damage. This could occur during winter if two batteries were series connected to crank the engine. 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 temp erature can be easily withstood. (2).the heat-sink can have a smaller factor comp ared with that of a conventional circuit. There is no device damage in case of excessive junction temp erature: all that happens is that Po( and there Ptot) and Id are reduced. APPLICATION SUGGESTION The recommended values of the components ar e those shown on application circuit of Ty pical application circuit. Different values can be used .the following table can help the designer. Component Recomme nded Value Purpose Smaller than recommended Value Large than recommended Value R1 (Gv-1)*R2 Gain setting Increase of gain R2 2.2 Ω Gain and SVR setting D ecrease of SVR R3 1 Ω Frequency stability Danger of Oscillation at high frequency with inductive loads. Rx =20*R2 Upper frequency cut off 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 by pass Danger of oscillation C4 1000 µF Supply voltage by pass Higher low frequency cut off |
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