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TB2959HQ Datasheet(PDF) 8 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) 8 Page - Toshiba Semiconductor

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TB2959HQ
2011-11-08
8
9. Mute Mode
The mute mode in this product is a mute at standby on/off, an internal mute for low voltage. If the mute is
turned off before charging C1 and C4 is finished, pop noise occurs because of input offset. Set “mute-off” with
sufficient margin in considering a charge time.
9.1
Low Voltage Mute
Low Voltage Mute is operated inside the IC the Ripple pin voltage becomes about under the about
5.6V.
9.2
Standby off Mute
A mute operation starts automatically inside the IC after standby-low until the Ripple pin voltage
becomes about 1/2 Vcc-0.7V.
Standby Off
Standby “Hi”
Ripple pin
Voltage
1/2Vcc
1/2Vcc-0.7V
Ripple pin voltage
Standby off
Operation period of Standby mute
Mute Off
t
Figure5 Standby Off Mute


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