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TDA7454 데이터시트(Datasheet) 1 Page - STMicroelectronics

부품명 TDA7454
상세내용  4 x 35W HIGH EFFICIENCY QUAD BRIDGE CAR RADIO AMPLIFIER
PDF  13 Pages
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제조사  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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TDA7454
4 x 35W HIGH EFFICIENCY QUAD BRIDGE
CAR RADIO AMPLIFIER
HIGH OUTPUT POWER CAPABILITY:
4 x 40W/4
Ω MAX.
4 x 35W/4
Ω EIAJ.
4 x 25W/4
Ω @14.4V, 1KHz, 10%
4 x 60W/2
Ω MAX.
2
Ω DRIVING CAPABILITY
DUAL MODE OPERATING EXTERNALLY
PRESETTABLE: CONVENTIONAL CLASS A-
B MODE, HIGH EFFICIENCY MODE
LOW EXTERNAL COMPONENTS COUNT:
– NO BOOTSTRAP CAPACITORS
– NO EXTERNAL COMPENSATION
– INTERNALLY FIXED GAIN (26dB)
CLIPPING DETECTOR
ST-BY FUNCTION (CMOS COMPATIBLE)
MUTE FUNCTION (CMOS COMPATIBLE)
AUTOMUTE AT MINIMUM SUPPLY
VOLTAGE DETECTION
LOW RADIATION
Protections:
OUPUT SHORT CIRCUIT
TO GND; TO VS; ACROSS THE LOAD
3 STEPS OVERRATING CHIP TEMPERA-
TURE WITH THERMAL WARNING
LOAD DUMP VOLTAGE
FORTUITOUS OPEN GND
LOUDSPEAKER DC CURRENT
ESD
DESCRIPTION
The TDA7454 is a new BCD technology QUAD
BRIDGE type of car radio amplifier in Flexiwatt25
packagespecially intendedfor car radio applications.
Among the features, its superior efficiency per-
formance coming from the internal exclusive
structure, makes it the most suitable device to
simplify the thermal management in high power
sets. The dissipated output power under average
listening condition is in fact reduced up to 50%
when compared to the level provided by conven-
tional class AB solutions.
October 1999
Flexiwatt 25
7
8
9
-
+
5
2
3
+
-
19
18
17
21
24
23
-
+
+
-
RIGHT FRONT
RIGHT REAR
LEFT FRONT
LEFT REAR
SVR
11
12
15
14
MUTE
22
ST-BY
4
IN LEFT
REAR
IN LEFT
FRONT
100
µF
IN RIGHT
FRONT
IN RIGHT
REAR
0.22
µF
0.22
µF
0.22
µF
0.22
µF
10
CD
25
1
TAB
13
S-GND
STD/HI- EFF
16
VCC2
VCC1
VCC
20
6
D94AU172C
BLOCK & APPLICATION DIAGRAM
MULTIPOWER BCD TECHNOLOGY
1/13




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