BA6793FP BA6793FP 4-channel driver player actuators motors. This

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BA6793FP BA6793FP 4-channel driver player actuators motors. This

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4-channel driver players
BA6793FP
BA6793FP 4-channel driver player actuators motors. This internal regulator standard operational amplifier, making suitable wide spectrum applications.
FApplications players, CD-ROM drives
FFeatures 28-pin HSOP power package allows application miniaturization. Minimum attached components. Driver gain adjustable with single attached resistor.
Internal regulator. (requires attached transistor) Internal standard operational amplifier. Internal thermal shutdown circuit. Three separate power supplies.
FAbsolute maximum ratings 25_C)
FRecommended operating conditions 25_C)
FBlock diagram
BA6793FP
FPin descriptions
FPin equivalent circuit diagrams
BA6793FP
BA6793FP
FElectrical characteristics (unless otherwise noted, 25_C, 12V, BIAS 2.5V, 1kHz, 20k, RL=8)
FMeasurement circuit
BA6793FP
FCircuit operation Driver Inputs focus tracking error signal from servo preamplifier control signal from motor. input signals, which normally center 2.5V, converted preamplifier, generating current corresponding input voltage. This current
BA6793FP
passed through resistor into internal reference voltage component, preamplifier output being signal centering internal reference voltage. systems (positive phase negative phase) created during conversion, generating output driver buffer.
Regulator This typical series regulator that generates reference voltage internally. saturation transistor must connected.
Operational amplifier standard 4558 type.
FApplication example
BA6793FP
FOperation notes BA6793FP thermal shutdown circuit. output current muted when chip temperature rises above 175_C (typically). When chip temperature falls 150_C (typically), driver circuit starts again. output currents (channels muted pulling mute pins (pins above 2.0V. During ordinary use, pins should left open lowered below 0.5V. Muting also occurs when bias (pin drops below 1.4V (typically). Make sure stays above 2.0V during normal use.
BA6793FP
Muting occurs during thermal shutdown, mute-on operations drop bias voltage. each case, only drivers muted. During muting, output pins remain internal bias voltage, roughly (VCC*VF) Connect bypass capacitor between power supplies, base radiating connected package's internal GND, should also connected external ground. capacitor between regulator output (pin also serves prevent oscillation select with good temperature characteristics.
FElectrical characteristic curves
BA6793FP
FExternal dimensions (Units:

BA6793FP BA6793FP 4-channel driver player actuators motors. This

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