BA6198FP ROHM Electronics, BA6198FP Datasheet - Page 8

• Manufacturer Part Number: BA6198FP
• Description: 4-channel BTL Driver For CD Players
• Manufacturer: ROHM Electronics

FOperation notes
(1)
Drop in regulator voltage
age drops below 4.0V (typically), the reset output
changes to the low level and the IC is simultaneously
muted. When the regulator voltages rises above 4.2V
(typically), reset output changes to the high level and
muting is released.
Drop in bias voltage
drops below 1.4V (typically), the IC is muted and the re-
set output simultaneously changes to the low level. Dur-
ing ordinary use, the bias voltage should be kept above
1.6V.
FElectrical characteristic curves
Optical disc ICs
Relationship between mute and reset output
When the bias pin voltage
When the regulator volt-
Thermal shutdown
rises above 175_C (typically), the IC is muted and the re-
set output simultaneously changes to the low level.
Muting
lowered below 0.5V, the IC is muted, but the reset output
remains the same.
(2)
operations or a drop in the bias pin voltage or regulator
voltage. In each case, only the drivers are muted. During
muting, the output pins remain at the internal bias volt-
age, roughly (V
(3)
tor between the power supplies, at the base of the IC.
(4)
ternal GND, but should also be connected to an external
ground.
(5)
GND also serves to prevent oscillation of the IC, so select
one with good temperature characteristics.
Muting occurs during thermal shutdown, mute-on
Be sure to connect the IC to a 0.1 F bypass capaci-
The radiating fin is connected to the package’s in-
The capacitor between regulator output (pin 8) and
When the mute pin voltage is opened or
CC
-V
F
) / 2.
BA6198S / BA6198FP
When the chip temperature
315