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參數(shù)資料
| 型號(hào)： | TDA7451 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 7 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封裝： | FLEXIWATT-25 |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大?。?/td> | 154K |
| 代理商： | TDA7451 |
TDA7451
4x7W OR 2x22W CAR RADIO POWER AMPLIFIER PLUS
TRIPLE POWER SUPPLY
PRELIMINARY DATA
HIGH OUTPUT POWER CAPABILITY:
4 x 9.5W OR 2 x 32W/4
MAX
4 x 8.5W OR 2 x 28W/4
EIAJ
4 x 7W OR 2 x 22W/4
@14.4V, 1KHz; 10%
MINIMIZED EXTERNAL COUNT
- NO NEED OF DECOUPLING CAPACITORS
- NO NEED OF BOOTSTRAP CAPACITOR
- NO NEED OF EXTERNAL COMPENSATION
- INTERNALLY FIXED GAIN (20dB)
POP-FREE AUDIO SECTION
ST-BY FUNCTION (C-MOS)
MUTE FUNCTION (C-MOS)
CLIP
DETECTOR,
THERMAL
WARNING,
SHORT CIRCUIT DETECTION
BUILT-IN VOLTAGE REGULATORS:
- 5V @ 150mA WITH RESET
- 5V @ 500mA WITH ST-BY
- 8.5V @ 200mA WITH ST-BY
REGULATORS DIAGNOSTIC FEATURE: UN-
DERVOLTAGE, 8.5V DROP SENSE, SHORT
CIRCUIT, LOAD DUMP, OVER-TEMPERA-
TURE
PROTECTIONS
General:
LOAD DUMP
OVERRATING CHIP TEMPERATURE
Audio Section:
OUT SHORT (TO GND, TO Vs
AND
ACROSS THE LOAD)
Power Supply Section:
SHORT CIRCUIT PROTECTION (OUT TO
GND)
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
October 1999
IN RF
VO3
VCC1
D95AU311C
+
-
+
RESET
10
F
+
-
+
PW-GND
1000
F
VCC2
0.1
F
VCC
200mA
REG.
-
-+
RF
RR
-
-+
LF
LR
HVCC
hvcc
ST-BY
1
F
MUTE
10K
IN RR
0.1
F
0.1
F
500mA
REG.
8.5V
IN LR
IN LF
0.1
F
0.1
F
VO2
5V
150mA
REG.
10
F
VO1
5V
DIAG
470
F
STCAP
SVR
DDL
S-GND
10
F
12
22
8
2
3
4
9
7
10
5
15
14
16
13
18,24
19
17
25
21
23
11
620
1
TAB
47F
22K
DIAG
10
F
10K
BLOCK DIAGRAM
Flexiwatt25
ORDERING NUMBER: TDA7451
1/9
Obsolete
Product(s)
- Obsolete
Product(s)
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