TDA75612LV View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
TDA75612LV
STMicroelectronics
'TDA75612LV' PDF : 35 Pages View PDF
TDA75612LV
Battery transitions management
8
Battery transitions management
8.1
Low voltage operation (“start stop”)
The most recent OEM specifications are requiring automatic stop of car engine at traffic
light, in order to reduce emissions of polluting substances. The TDA75612LV, thanks to its
innovating design, allows to go on playng sound when battery falls down to 6/7 V during
such conditions, without producing pop noise. The maximum system power will be reduced
accordingly.
Supported battery cranking curves are shown below, indicating the shape and durations of
allowed battery transitions.
Figure 18. Worst case battery cranking curve sample 1
9EDWW 9
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V1 = 12 V; V2 = 6 V; V3 = 7 V; V4 = 8 V
t1 = 2 ms; t2 = 50 ms; t3 = 5 ms; t4 = 300 ms; t5 =10 ms; t6 = 1 s; t7 = 2 ms
Figure 19. Worst case battery cranking curve sample 2
9EDWW 9
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*$3*36
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V1 = 12 V; V2 = 6 V; V3 = 7 V
t1 = 2 ms; t2 = 5 ms; t3 = 15 ms; t5 = 1 s; t6 = 50 ms
DocID025639 Rev 4
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*$3*36
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