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TDA8560Q 데이터시트(HTML) 5 Page - NXP Semiconductors

부품명 TDA8560Q
상세내용  2 x 40 W/2 ohm stereo BTL car radio power amplifier with diagnostic facility
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제조사  PHILIPS [NXP Semiconductors]
홈페이지  http://www.nxp.com
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TDA8560Q 데이터시트(HTML) 5 Page - NXP Semiconductors

 
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1996 Jan 08
5
Philips Semiconductors
Product specification
2
× 40 W/2 Ω stereo BTL car radio
power amplifier with diagnostic facility
TDA8560Q
SHORT-CIRCUIT PROTECTION
When a short-circuit occurs at one or more outputs to
ground or to the supply voltage, the output stages are
switched off until the short-circuit is removed and the
device is switched on again, with a delay of approximately
20 ms, after removal of the short-circuit. During this
short-circuit condition, pin 12 is continuously low.
When a short-circuit across the load of one or both
channels occurs the output stages are switched off during
approximately 20 ms. After that time it is checked during
approximately 50
µs to see whether the short-circuit is still
present. Due to this duty cycle of 50
µs/20 ms the average
current consumption during this short-circuit condition is
very low (approximately 40 mA).
During this short-circuit condition, pin 12 is low for 20 ms
and high for 50
µs (see Fig.4).
The power dissipation in any short-circuit condition is
very low.
TEMPERATURE DETECTION
When the virtual junction temperature Tvj reaches 150 °C,
pin 12 will become continuously low.
OPEN COLLECTOR OUTPUT
Pin 12 is an open collector output, which allows pin 12 of
more devices being tied together.
Fig.4 Short-circuit waveform.
handbook, full pagewidth
MGA722
short-circuit over the load
20 ms
µ
50 s
t
t
VP
current
in
output
stage
V12


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