701
Optical disc ICs
3-channel BTL driver for CD, CD-ROM,
DVD, and DVD-ROM
BA5973FP
The BA5973FP is a 3-channel BTL driver developed for use as the actuator and loading motor driver for CD and DVD
players. Since the gain and frequency characteristics for the actuator can be set to any desired value with external com-
ponents, it is can be used in a wide range of applications.
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Features
1) 3-channel BTL driver for CD players.
2) The HSOP-28 package allows for the design of
smaller sets.
3) Internal thermal shutdown circuit with hysteresis.
Actuator driver
4) Gain is adjustable with external resistor.
5) Contains both positive and negative input systems
for compatibility with a variety of input formats such
as reverse phase input.
Loading driver
6) Internal brake function.
7) Internal back-rush voltage protection diode.
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Absolute maximum ratings (Ta = 25
_
C)
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Recommended operating conditions
705
Optical disc ICs
BA5973FP
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Circuit operation
The analog switch pin 10, the mute pin 1, and the loading
driver input logic operate as shown below.
(1)
Mute input (pin 1) truth table
(2)
Analog switch input (pin 10) truth table
(3)
Loading driver logic input (pins 13 and 17) truth
table
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Application example
PDF 
ZIP
