tda1908 STMicroelectronics, tda1908 Datasheet
tda1908
Available stocks
Related parts for tda1908
tda1908 Summary of contents
Page 1
... DESCRIPTION The TDA1908 is a monolithic integrated circuit in 12 lead quad in-line plastic package intended for low frequency power applications. The mounting is compatible with the old types TBA800, TBA810S, TCA830S and TCA940N. Its main features are: – flexibility in use with a max output curent of 3A and an operating supply voltage range 30V ...
Page 2
... TDA1908 PIN CONNECTION (top view) SCHEMATIC DIAGRAM 2/12 ...
Page 3
... V = 18V 30V 2. 10 1KHz 14V 18V 6 22V 4 24V TDA1908 Value Unit max 12 C/W max ( ) 70 C/W (heatsink)= 8 C/W, unless th Typ. Max. Unit 30 V 2.1 2.5 9.2 10.2 V 15.5 16 0.5 V 1.3 2.5 5 5.3 3/12 ...
Page 4
... TDA1908 ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter d Harmonic distorsion V Input sensivity i V Input saturation voltage (rms Input resistence (pin Drain current s Efficiency BW Small signal bandwitdth (-3 dB) G Voltage gain (open loop Voltage gain (closed loop Total input noise N S/N Signal to noise ratio ...
Page 5
... L Figure 2. Quiescent drain current vs. supply voltage Fi gur Disto rtion vs . output power ( gur Disto rtion vs . frequency ( TDA1908 Figure 3. Output power vs. supply voltage Fi gur Disto rtion vs . output power ( gur Disto rtion vs . frequency ( 5/12 ...
Page 6
... TDA1908 loo p frequency response Figure 13. Supply voltage rejection vs. voltage gain Figure 16. Power dissipa- tion and efficiency vs. output power (V = 14V) s 6/12 Figure 11. Output power vs. input voltage Figure 14. Supply voltage rej urc e resistance Figure 17. Power dissipa- tion and efficiency vs. output ...
Page 7
... APPLICATION INFORMATION Figure 19. Application circuit with bootstrap * R4 is necessary when V is less than 10V. s Figure 20. P.C. board and component lay-out of the circuit of fig scale) TDA1908 7/12 ...
Page 8
... TDA1908 APPLICATION INFORMATION (continued) Figure 21. Application circuit without bootstrap Figure 23. Position control for car headlights 8/12 Figure 22. Output power vs. supply voltage (circuit of fig. 21) ...
Page 9
... Increase of the Higher low switch-on noise frequency cutoff. Increase of SVR. Degradation of Increase of the SVR. switch-on time. Increase of the distorsion at low frequency Danger of oscillation. Higher low frequency cutoff. TDA1908 Allowed range Min. Max 330 0.1 F 0.1 F 2.2 F 100 100 F 9/12 ...
Page 10
... TDA1908 THERMAL SHUT-DOWN The presence of a thermal limiting circuit offers the following advantages overload on the output (even perma- nent abovelimit ambient temperature can be easily supported since the T higher than 150 C. 2) The heatsink can have a smaller factor of safety compared with that of a conventional circuit ...
Page 11
... FINDIP TDA1908 inch TYP. MAX. 0.159 0.069 0.024 0.014 0.052 0.037 0.783 0.677 0.693 0.219 0.426 0.100 0.110 0.700 0.714 0.300 0.300 0.314 0.500 0.514 0.280 0.264 0.386 0.339 0.256 ...
Page 12
... TDA1908 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice ...