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PDF TDA7451 Data sheet ( Hoja de datos )
| Número de pieza | TDA7451 | |
| Descripción | 4x7W OR 2x22W CAR RADIO POWER AMPLIFIER PLUS TRIPLE POWER SUPPLY | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TDA7451 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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® TDA7451
4x7W OR 2x22W CAR RADIO POWER AMPLIFIER PLUS
TRIPLE POWER SUPPLY
HIGH OUTPUT POWER CAPABILITY:
4 x 9.5W OR 2 x 32W/4Ω MAX
4 x 8.5W OR 2 x 28W/4Ω EIAJ
4 x 7W OR 2 x 22W/4Ω @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-
PRELIMINARY DATA
Flexiwatt25
ORDERING NUMBER: TDA7451
TURE
PROTECTIONS
General:
LOAD DUMP
OVERRATING CHIP TEMPERATURE
Audio Section:
OUT SHORT (TO GND, TO Vs
ACROSS THE LOAD)
AND
Power Supply Section:
SHORT CIRCUIT PROTECTION (OUT TO
GND)
BLOCK DIAGRAM
MUTE
ST-BY
10KΩ
10µF
10KΩ
1µF
8.5V
10µF
5V
10µF
5V
22K
10µF
RESET
DIAG
IN RR IN RF
VO3
VO2
VO1
22K
SVR
47µF
22
8
2 200mA
REG.
3 500mA
REG.
4
150mA
REG.
9
7 DIAG
10
STCAP
470µF
5
0.1µF
0.1µF
VCC1
VCC2
12 11
6 20
23
+
0.1µF
VCC
1000µF
+-
RF
21 - +
-
hvcc
RR
25 HVCC
LF
17
+
+-
15 14
TAB
1
LR
19
-
-+
PW-GND
18,24
16 13
0.1µF
DDL S-GND
0.1µF
IN LF IN LR
D95AU311C
October 1999
1/9
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
1 page  
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
DIAGNOSTIC OUTPUT
Diag On Vs Low Vs Diag. ON Threshold
Diag Off Vs Low Vs Diag. OFF Thrershold
Diag Hyst Vs Low Vs Diag. Hysteresis
Diag Dump Diag. Threshold vs Overvoltage
Diag On VREG3 Output Voltage Drop
Drop
Before Diag. Activation
Vout On Diag Diag. Output Voltage
VO2
∆VO2
IL02
∆VO2
SVR
Output Voltage 2
Load Regulation 2
Current Limit 2
Dropout Voltage
Ripple Rejection
∆VO2
VO3
∆VO3
IL03
∆VO3
SVR
Line Regulation
Output Voltage 3
Load Regulation 3
Current Limit 3
Dropout Voltage
Ripple Rejection
∆VO3
Line Regulation 3
Test Condition
IO3 = 100mA
Diag activated
R (Diag to VREG1) ≥ 15K
IO2 = 5mA
IO2 = 5 to 500mA
VO2 = 0V
IO2 = 500mA
Vripple = 1Vpp; I02 = 100mA
f = 100Hz
f = 10KHz
VS = 8 to 18V, IO2 = 5mA
IO3 = 5mA
IO3 = 5 to 200mA
IO3 = 200mA
Vripple = 1Vpp; I03 = 100mA
f = 100Hz
f = 10KHz
VS = 11 to 18V, IO3 = 5mA
DIAGNOSTIC DIAGRAM
DIAG
STCAP
TDA7451
Min. Typ. Max. Unit
7 7.5 8
V
7.6 V
100 150 mV
20 21 22
V
90 200 mV
1.5 V
4.85 5 5.15 V
100 mV
0.8 1 1.5 A
1 1.5 V
60 dB
50 dB
10 40 mV
8.25 8.5 8.75
V
80 mV
300 400 800 mA
1V
60 dB
50 dB
10 40 mV
VCC
HYST=0.1V +
7.5V
-
DUMP
+
21V -
Tj>170
ST-BY
2.8V
+
-
2.2V
+
-
REFERENCE
STCAP
SHORT
OUT
REG1
5V 150mA
HYST=0.5V +
4V -
SHORT
OUT
REG3
8.5V 200mA
EN
DROP SENSE
OUT
SHORT
OUT
REG2
5V 500mA
EN
CLIPPING
EN
AMPLIFIERS
AMPLIFIERS
OVERLOAD
Tj>150
D96AU504B
REG1
RESET
REG3
REG2
CD
5/9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet TDA7451.PDF ] | |
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