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4-channel BTL driver for CD players

BA6896FP

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4-channel BTL driver for CD players
BA6896FP
5) Internal standard operational amplifier. 6) Internal thermal shutdown function. 7) The output current between pins 1 and 2 is mutable with the external mute pin.
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FBlock diagram
BA6896FP
FPin descriptions
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FPin equivalent circuit diagrams
BA6896FP
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BA6896FP
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FMeasurement circuit
BA6896FP
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FCircuit operation (1) Driver Inputs to the IC are the focus tracking error signal from the servo preamplifier and the control signal from the motor. The input signals, which normally center on 2.5V, are V / I converted by the preamplifier, generating a current corresponding to the input voltage. This current is
BA6896FP
passed through a resistor and into the internal reference voltage component, the preamplifier output being a signal centering on the internal reference voltage. Two systems (positive phase and negative phase) are created during V / I conversion, generating BTL output via the driver buffer.
(2) Regulator This is a typical series regulator that generates a reference voltage internally. A PNP low saturation transistor must be connected.
(3) Operational amplifier A standard 4558 type.
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FApplication example
BA6896FP
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BA6896FP
FThermal derating curve
FElectrical characteristic curves
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BA6896FP
FExternal dimensions (Units: mm)