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TB2959HQ Datasheet(PDF) 5 Page - Toshiba Semiconductor

Part No. TB2959HQ
Description  Maximum Power 47W BTL 4-ch Audio Power IC
Download  24 Pages
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Maker  TOSHIBA [Toshiba Semiconductor]
Homepage  http://www.semicon.toshiba.co.jp/eng
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TB2959HQ Datasheet(HTML) 5 Page - Toshiba Semiconductor

 
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TB2959HQ
2011-11-08
5
6. Detailed Description
Note4: When the unrecommended value is used, please examine it enough by system evaluation.
Note5: Since “AC-GND” pin is a common reference voltage for all input, this product needs to set the ratio of an
input apacitance (C1) and the AC-GND capacitance (C6) to 1:4.
Effect (Note4)
Component
Name
Recomm
ended
Value
Pin
Purpose
Lower than Recommended Value
Higher than Recommended Value
C1
0.22 μF
INx(x:1 to 4)
To eliminate DC
Cut-off frequency becomes higher
Cut-off frequency becomes lower
C2
10 μF
Ripple
To reduce ripple
Turn on/off time and turn-on diag.
cycle shorter
Turn on/off time and turn-on diag.
cycle longer
C3
0.1 μF
VCC1, VCC2
To provide sufficient
oscillation margin
Reduces noise and provides sufficient oscillation margin
C4
1uF
Mute
To reduce pop noise
High pop noise. Duration until
mute function is turned on/off is
short.
Low pop noise. Duration until mute
function is turned on/off is long.
C5
3900 μF
VCC1, VCC2
Ripple filter
Power supply ripple filtering
C6
1 μF
AC-GND
Common reference
voltage for all input
Pop noise is suppressed when C1: C6 = 1:4. (Note5)
C7
0.22μF
AUX-IN
To eliminate DC
Cut-off frequency is increased in
AUX
Cut-off frequency is reduced in
AUX.
R1
47kΩ
Mute
To reduce pop noise
High pop noise. Duration until
mute function is turned on/off is
short.
Low pop noise. Duration until mute
function is turned on/off is long.


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