TDA7253
8W AMPLIFIER WITH MUTING
WIDE SUPPLY VOLTAGE RANGE
8W @ V
S
=26V, R
L
= 8
, THD=10%
MUTE FACILITY (POP FREE) WITH LOW
CONSUMPTION
AC SHORT CIRCUIT PROTECTION
THERMAL
OVERLOAD
PROTECTION
(150
C)
DESCRIPTION
The TDA7253 is class AB audio power amplifier
assembled in the new Clipwatt package.
May 1997
=
MUTE
SW
CSVR
100
F
R7 820
27K
C2
100nF
IN
(L)
1
11
3
TDA7253
7
6
CF
47
F
R4
47
R3
1.5K
C9
0.1
F
R6
4.7
RL
C11 1000
F
C4
0.1
F
C5
470
F
2
10
9
8
4
+V
S
D94AU130
APPLICATION CIRCUIT
Clipwatt11
1/5
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
S
Supply Voltage
35
V
I
O
Output Peak Current (repetitive f >20Hz)
2.5
A
I
O
Output Peak Current (non repetitive, t = 100
s)
3.5
A
P
tot
Total Power Dissipation (T
case
= 70
C)
25
W
T
op
Operating Temperature Range
0 to 70
C
T
stg,Tj
Storage & Junction Temperature
-40 to 150
C
1
2
3
4
5
6
7
9
10
11
8
N.C.
+Vs
OUTPUT
N.C.
GND
NON INVERTING INPUT
INVERTING INPUT
SVR/MUTING
N.C.
N.C.
N.C.
D93AU037A
PIN CONNECTION (Top view)
Figure 1: Application Circuit
TDA7253
2/5
ELECTRICAL CHARACTERISTICS (Refer to the test and application circuit, V
S
= 26V; R
L
= 8
;
G
v
= 30dB; f = 1KHz; T
amb
= 25
C unless otherwise specified.)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
S
Supply Voltage
10
32
V
V
O
Quiescent Output Voltage
12.5
V
I
q
Total Quiescent Current
40
mA
P
O
Output Power
d = 10%
d = 1%
8
10
8
W
W
d
Total Harmonic Distortion
P
O
= 1W
0.03
%
R
I
Input Resistance
100
200
K
f
L
Low Frequency Roll-off (-3dB)
40
Hz
f
H
High Frequency Roll-off (-3dB)
80
KHz
e
N
Total Input Noise Voltage
A Curve; R
S
= 10K
2
mV
f = 22Hz to 22KHz; R
S
= 10K
2.5
10
V
SVR
Supply Voltage Rejection
R
S
= 10K
; f = 100Hz; Vr = 0.5V
60
dB
VT
MUTE
Mute Threshold
0.8
V
VT
PLAY
Play Threshold
5
V
A
M
Mute Attenuation
80
100
dB
I
qMUTE
Quiescent Current Mute
7
10
mA
Note: to avoid pop-on noise
C
F
C
SVR
1
Figure 1: Output Power vs. Supply Voltage
8
12
16
20
24
28
Vs(V)
D94AU131
20
25
30
35
40
45
Iq
(mA)
Figure 2: Quiescent Current vs. Supply Voltage
THERMAL DATA
Symbol
Parameter
Value
Unit
R
th j-case
Thermal resistance junction to case
Max
3
C/W
TDA7253
3/5
CLIPWATT11 PACKAGE MECHANICAL DATA
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
3.10
0.122
B
1.10
0.04
C
0.15
0.006
D
1.50
0.059
E
0.52
0.02
F
0.80
0.03
G
1.70
0.066
G1
17.00
0.66
H1
12.00
0.48
H3
20.00
0.79
L
17.90
0.70
L1
14.40
0.57
L2
11.00
0.43
M
2.54
0.1
M1
2.54
0.1
TDA7253
4/5
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-
THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectronics.
1997 SGS-THOMSON Microelectronics Printed in Italy All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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TDA7253
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