BA5912 ROHM [Rohm], BA5912 Datasheet - Page 7

• Manufacturer Part Number: BA5912
• Description: 2-channel BTL driver for CD players
• Manufacturer: ROHM [Rohm]

FOperation notes
(1)
circuit. When the chip temperature reaches 175 _C
(Typ.), the output current is muted. If the chip tempera-
ture then drops below 150_C (Typ.), then the mute is re-
leased.
(2)
13) open or lowered to 0.5V or below, you can indepen-
dently mute the output current for channels 1 and 2. For
normal conditions, have the voltages for the mute pins
(pins 2 and 13) pulled up to 2.0V or greater. If the both
mute pins (pins 2 and 13) are open or 0.5V or less, then
the IC automatically enters the standby mode.
(3)
1.4V (Typ.), outputs are muted. For normal conditions,
have the voltage above 2.0V.
(4)
internal circuits turn off. If the power supply voltage then
rises to 4.0V (Typ.), the circuits turn on.
FElectrical characteristic curves
Optical disc ICs
The BA5912AFP-Y contains a thermal shutdown
By having the voltage of the mute pins (pins 2 and
If the voltage of the bias pin (pin 20) drops below
If the power supply voltage drops below 3.5V (Typ.),
(5)
bias pin drops, or if the power supply voltage drops, the
mute is activated; however, in these situations, only the
drivers are muted. Also, the output pin voltage becomes
the internal bias voltage.
(6)
open or at 0.5V or less (internal bias voltage = (Pow
V
Vref switch pin pulled up to 2.0V (internal bias voltage =
Pow V
(7)
tween the bases of the power supply pins of this IC.
(8)
ground within the package, be sure to also connect them
to a ground externally as well.
CC
*VF) / 2). When Pre V
If the voltage of the thermal shutdown, mute ON, or
When Pre V
Connect a bypass capacitor (approx. 0.1 F) be-
Even though the radiation fins are connected to
CC
/ 2).
CC
= Pow V
CC
CC
> P
, have the Vref switch pin
OW
BA5912AFP-Y
V
CC
)VF, have the
595