Audio Power Amplifier - Toshiba 21E88 Service Manual

2. AUDIO POWER AMPLIFIER TDA8943SF/TDA8944J
6 W MONO BRIDGE TIED LOAD (BTL) AUDIO AMPLIFIER
1). General description
The TDA8943SF is a single-channel audio power amplifier with an output power of
6 W at an 8 Ω load and a 12 V supply. The circuit contains a Bridge Tied Load (BTL)
amplifier with an all-NPN output stage and standby/mute logic. The TDA8943SF
comes in a 9-lead single in-line (SIL) medium power package. The TDA8943SF is
printed-circuit board (PCB) compatible with all other types in the TDA894x family.
One PCB footprint accommodates both the mono and the stereo products.
2). Features
Few external components
Fixed gain
Standby and mute mode
No on/off switching plops
Low standby current
High supply voltage ripple rejection
Outputs short-circuit protected to ground, supply and across the load
Thermally protected
Printed-circuit board compatible.
3). Block diagram
4). Pinning information
SERVICE MANUAL
Fig. 16
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