TDA7454
4 x 35W HIGH EFFICIENCY QUAD BRIDGE
CAR RADIO AMPLIFIER
HIGH OUTPUT POWER CAPABILITY:
4 x 40W/4Ω MAX.
4 x 35W/4Ω EIAJ.
4 x 25W/4Ω @14.4V, 1KHz, 10%
4 x 60W/2Ω MAX.
2Ω 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 V
S
; ACROSS THE LOAD
3 STEPS OVERRATING CHIP TEMPERA-
TURE WITH THERMAL WARNING
LOAD DUMP VOLTAGE
FORTUITOUS OPEN GND
BLOCK & APPLICATION DIAGRAM
6
STD/HI- EFF
0.22µF
IN RIGHT
FRONT
16
20
7
11
8
9
ST-BY
0.22µF
4
13
5
12
2
3
19
18
17
10
1
21
14
24
23
-
D94AU172C
MULTIPOWER BCD TECHNOLOGY
Flexiwatt 25
LOUDSPEAKER DC CURRENT
ESD
DESCRIPTION
The TDA7454 is a new BCD technology QUAD
BRIDGE type of car radio amplifier in Flexiwatt25
package specially intended for 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.
VCC1
VCC2
VCC
-
RIGHT FRONT
+
S-GND
+
RIGHT REAR
-
-
LEFT FRONT
+
TAB
+
LEFT REAR
IN RIGHT
REAR
MUTE
22
0.22µF
15
IN LEFT
FRONT
100µF
SVR
0.22µF
IN LEFT
REAR
CD
25
September
2013
1/13
TDA7454
ABSOLUTE MAXIMUM RATINGS
Symbol
V
op
V
S
V
peak
I
O
I
O
P
tot
T
stg
, T
j
Parameter
Operating Supply Voltage
DC Supply Voltage
Peak Supply Voltage (for t = 50ms)
Output Peak Current (not repetitive t = 100µs)
Output Peak Current (repetitive f > 10Hz)
Power Dissipation T
case
= 70°C
Storage and Junction Temperature
Value
18
28
40
8
6
86
-55 to 150
Unit
V
V
V
A
A
W
°C
THERMAL DATA
Symbol
R
th j-case
Description
Thermal Resistance Junction-case
Max
Value
1
Unit
°C/W
PIN CONNECTION
(Top view)
25
24
23
22
CD
PW GND LR
OUT LR-
MUTE
OUT LR+
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
V
CC2
OUT LF-
PW GND LF
OUT LF+
STD/HEFF
IN LF
IN LR
S GND
IN RR
IN RF
SVR
OUT RF+
PW GND RF
OUT RF-
V
CC1
OUT RR+
ST-BY
OUT RR-
PW GND RR
TAB
D94AU173A
4
3
2
1
2/13
TDA7454
ELECTRICAL CHARACTERISTICS
(Refer to the test circuit V
S
= 14.4V; R
L
= 4Ω; f = 1KHz;
T
amb
= 25°C, unless otherwise specified
Symbol
V
S
I
d
P
o
Parameter
Supply Voltage Range
Total Quiescent Drain Current
Output Power
Test Condition
Min.
8
60
THD = 10%
THD = 1%
THD = 10% RL = 2Ω;
THD = 1% R
L
= 2Ω;
P
o EIAJ
P
o max.
THD
EIAJ Output Power (*)
Max. Output Power (*)
Total harmonic distortion
Vs = 13.7V
Vs = 13.7V, RL = 2Ω
Vs = 14.4V
Vs = 14.4V, RL = 2Ω
P
O
= 1W to 10W; STD MODE
P
O
= 1W; HE MODE
P
O
= 10W; HE MODE
R
L
= 2Ω; HE MODE; P
O
= 3W
R
L
= 2Ω; HE MODE; P
O
= 15W
f = 1KHz to 10KHz
23
18
40
28
32
50
38
55
Typ.
140
25
20
42
30
35
52
40
60
0.03
0.04
0.1
0.06
0.15
45
11
25
R
g
= 600Ω
f = 300Hz; Vr = 1Vrms;
R
g
= 0 to 100Ω;
(–3dB)
45
75
90
3.5
50
80
3.5
V = 0 to V
S
V
S max
= 18V
Standard BTL Mode Op. (V
pin 16
)
High Efficiency Mode (V
pin 16
)
CD off: P
Omin
= 10W
CD on: THD = 5%
-10
1
Open
0.5
5
150
V
µA
µA
10
90
1.5
100
1.5
55
15
26
100
52
19
27
1
150
0.3
0.3
0.5
0.3
0.5
Max.
18
250
Unit
V
mA
W
W
W
W
W
W
W
W
%
%
%
%
%
dB
KΩ
dB
dB
µV
dB
KHz
dB
V
V
µA
dB
V
V
µA
C
T
R
IN
G
V
∆G
V
E
IN
SVR
BW
A
SB
V
sb IN
V
sb OUT
I
sb
A
M
V
M IN
V
M OUT
I
M
Cross Talk
Input Impedance
Voltage Gain
Voltage Gain Match
Output Noise Voltage
Supply Voltage Rejection
Power Bandwidth
Stand-by Attenuation
Stand-by in Threshold
Stand-by out Threshold
Stand-by Current Consumption
Mute Attenuation
Mute in Thereshold
Mute out Threshold
Mute pin Current (Sourced)
Mode Select Switch
CD
Clip Det. out Current
(Pull up to 5V with 10KΩ)
(*) Saturated square wave output.
3/13
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