Optical disc ICs
FOperation notes
(1) Tray motor driver voltage setting (forward mode)
BA6995FP
Note: Tray driver output voltage cannot be set higher than the maximum output voltage for the power supply. The example above applies only when setting
below the maximum output voltage. Maximum output voltage for the power supply can be output by pulling up the tray input pin (pin 8), or by connecting it to VCC.
(2) Muting
〈Thermal shutdown〉
The output current is muted when the chip temperature
exceeds 175_C (typically).
〈Supply voltage drop muting〉
The internal circuits turn off when the supply voltage
drops below 4.3V (typically), and turn on again when it
rises above 4.5V (typically).
(3) Muting occurs during thermal shutdown and when
the supply voltage drops. In either case, only the driver
is muted. The output pin voltage during muting is the in-
ternal bias voltage, roughly VCC / 2.
(4) Be sure to connect the IC to a 0.1µF bypass capaci-
tor to the power supply, at the base of the IC.
(5) Connect the radiating fin to an external ground.
FElectrical characteristic curves
500