TDA7451 Datasheet, PDF (5/9 Pages) STMicroelectronics – 4x7W OR 2x22W CAR RADIO POWER AMPLIFIER PLUS TRIPLE POWER SUPPLY

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 V_REG3 Output Voltage Drop
Drop
Before Diag. Activation
V_out On Diag Diag. Output Voltage
V_O2
∆V_O2
I_L02
∆V_O2
SVR
Output Voltage 2
Load Regulation 2
Current Limit 2
Dropout Voltage
Ripple Rejection
∆VO2
V_O3
∆V_O3
I_L03
∆VO3
SVR
Line Regulation
Output Voltage 3
Load Regulation 3
Current Limit 3
Dropout Voltage
Ripple Rejection
∆V_O3
Line Regulation 3
Test Condition
I_O3 = 100mA
Diag activated
R (Diag to V_REG1) ≥ 15K
I_O2 = 5mA
I_O2 = 5 to 500mA
V_O2 = 0V
I_O2 = 500mA
V_ripple = 1Vpp; I₀₂ = 100mA
f = 100Hz
f = 10KHz
VS = 8 to 18V, IO2 = 5mA
I_O3 = 5mA
I_O3 = 5 to 200mA
I_O3 = 200mA
V_ripple = 1Vpp; I₀₃ = 100mA
f = 100Hz
f = 10KHz
V_S = 11 to 18V, I_O3 = 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
1
V
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
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