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BA6896 数据表(PDF) 8 Page - Rohm

部件名 BA6896
功能描述  4-channel BTL driver for CD players
Download  9 Pages
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制造商  ROHM [Rohm]
网页  http://www.rohm.com
标志 ROHM - Rohm

BA6896 数据表(HTML) 8 Page - Rohm

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389
Optical disc ICs
BA6896FP
FOperation notes
(1)
The BA6896FP has an internal thermal shutdown
circuit. Output current is muted when the chip tempera-
ture exceeds 175
_C (typically).
(2)
The output current can be muted be raising the
mute pin (pin 7) voltage above 2.2V. Pin 7 should be open
or pulled up above 0.4V during normal operation.
(3)
Muting also occurs when the bias pin (23 pin) drops
below 1.4V (typically). Pin 23 should stay above 1.6V
during normal operation.
(4)
The internal circuits turn off when the supply volt-
age drops below 4.5V (typically) and start up again when
the supply voltage rises above 4.7V (typically).
(5)
Muting occurs during thermal shutdown, mute-on
operations or a drop in the bias pin voltage or supply volt-
age. In each case, only the drivers are muted. During
muting, the output pins remain at the internal bias volt-
age, roughly (VCC
*VF)/2.
(6)
Attach a bypass capacitor (roughly 0.1
µF) to the
power supply, at the base of the IC.
(7)
The radiating fin is connected to the package’s in-
ternal GND, but should also be connected to an external
ground.
(8)
The capacitor between regulator output (pin 6) and
GND also serves to prevent oscillation of the IC, so select
one with good temperature characteristics.
FThermal derating curve
FElectrical characteristic curves


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