TDA7350 データシートの表示（PDF） - STMicroelectronics

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TDA7350

22W BRIDGE-STEREO AMPLIFIER FOR CAR RADIO

STMicroelectronics 

TDA7350A

Figure 30. Block Diagram; Bridge Configuration

Figure 31. ICV - PNP Gain vs. IC

Figure 33. ICV - PNP cut-off frequency vs. IC

Figure 32. ICV - PNP VCE(sat) vs. IC

12/23

4.7 OUTPUT STAGE

Poor current capability and low cutoff frequency

are well known limits of the standard lateral PNP.

Composite PNP-NPN power output stages have

been widely used, regardless their high saturation

drop. This drop can be overcome only at the ex-

pense of external components, namely, the boot-

strap capacitors. The availability of 4A isolated

collector PNP (ICV PNP) adds versatility to the de-

sign. The performance of this component, in terms

of gain, VCEsat and cut-off frequency, is shown in

fig. 31, 32, 33 respectively. It is realized in a new

bipolar technology, characterized by topbottom

isolation techniques, allowing the implementation

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