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2 X 6W CAR RADIO AMPLIFIER PLUS SOLID STATE SWITCH
TDA7365
2 x 6W CAR RADIO AMPLIFIER
PLUS SOLID STATE SWITCH
ADVANCE DATA
OUTPUT POWER 2x6W/4 W @14.4V, 1KHz,
10%
SOLID STATE POWER SWITCH INCLUDED
(1A @ V DROP = 0.8V Typ.)
MINIMUM EXTERNAL COMPONENT COUNT
- INTERNALLY FIXED GAIN (40dB)
- NO BOOTSTRAP CAPACITORS
- NO EXTERNAL COMPENSATION
ST-BY FUNCTION (CMOS COMPATIBLE)
MUTE FUNCTION (CMOS COMPATIBLE)
NO AUDIBLE POP DURING MUTE/ST-BY
OPERATIONS
LOW SUPPLY SELF MUTING
MULTIWATT15
ORDERING NUMBER: TDA7365
REVERSE BATTERY
ESD
DESCRIPTION
The TDA7365 is a new technology Dual Audio Am-
plifier in Multiwatt15 package especially designed
for stereo car radio applications.
Thanks to the fully complementary output configu-
ration the TDA7365 delivers a rail to rail voltage
swing with no need of boostrap capacitors
It includes a solid state switch, enabled by a ST-BY
function common to the audio section, suitable for
supplying both the signal processing part of the car
radio set and the lamps. As a results the power-on
operation is simplified, thereby saving cost and
space in the whole power section.
PROTECTIONS
AC AUDIO OUTPUTS SHORT CIRCUIT TO
GND
DC AUDIO OUTPUTS SHORT CIRCUIT TO
GND AND TO V S AT POWER ON
SWITCH OUTPUT INTERNAL CURRENT
LIMITATION
OVERRATING CHIP TEMPERATURE WITH
SOFT THERMAL LIMITER
LOAD DUMP
FORTUITOUS OPEN GND
BLOCK DIAGRAM
April 1995
1/7
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
11040338.002.png
TDA7365
PIN CONNECTION (Top view)
Vs
Vs
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V S
DC Supply Voltage
28
V
V OP
Operating Supply Voltage
18
V
V PEAK
Peak Supply Voltage (t = 50ms)
40
V
I O
Audio Channels Output Peak Current (not rep. t = 100
m
s)
4
A
I O
Audio Channels Output Peak Current (rep. f > 10Hz)
3
A
I O
Switch Output Peak Current
(internally limited) 1.5
A
P tot
Power Dissipation (T case =85
°
C)
32
W
T stg ,T j Storage and Junction Temperature
-40 to 150
°
C
THERMAL DATA
Symbol
Description
Value
Unit
R th j-case Thermal Resistance Junction-case
Max
2
°
C/W
2/7
11040338.003.png
TDA7365
ELECTRICAL CHARACTERISTICS (Refer to the test circuit; V S = 14.4V; R L =4 W ,T amb =25 ° C,
f = 1kHz, unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V S
Supply Range
8
18
V
I d
Total Quiescent Drain Current
Power Switch Unloaded
80
mA
P O
Output Power
; THD = 10%
each channel
W
5.5
6
W
; THD = 10%
each channel
W
9
W
d
Distortion
P O = 0.1 to 3W
0.08
0.3
%
CT
Cross Talk
f = 1kHz; R g =0
f = 10kHz; R g =0
50
55
50
dB
dB
R IN
Input Impedance
40
50
K
W
G V
Voltage Gain
39
40
41
dB
G V
Voltage Gain Match.
1
dB
E IN
Input Noise Voltage (*)
R g = 0
1.2
5
m
V
SVR
Supply Voltage Rejection
R g = 0 ; f = 100Hz;
V r = 0.5V rms
45
50
dB
ASB
Stand-by Attenuation
60
90
dB
I SB
ST-BY Current Consumption
100
m
A
V SB IN
ST-BY IN Threshold Voltage
1.5
V
V SB OUT
ST-BY OUT Threshold Voltage
3.5
V
V MIN
MUTE IN Threshold Voltage
1.5
V
V MOUT
MUTE OUT Threshold Voltage
3.5
V
POWER SWITCH CHARACTERISTICS
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
I Op
Continuous Output Current
1.2
A
V DROP
Dropout Voltage
Io = 1A
1.4
V
(*) 22Hz to 22KHz
(**) A weighted
TEST AND APPLICATION CIRCUIT
+V s
470
m
F
0.1
m
F
PWR SWITCH
OUTPUT
TO THE
VOLTAGE REGULATOR
SUPPLYING THE LOW
SIGNAL SECTION
C5
C6
POWER
SWITCH
4.7 m F
C9
47
m
F C10
SVR
PW-GND
0.22 m FC1
IN1
1000
m
FC3
0.22
m
FC2
OUT1
IN2
50K
1000
m
FC4
OUT2
50K
10K R1
ST-BY
0.1
m
F
C7
MUTE 10K R2
S-GND
10
m
F
C8
D94AU116B
3/7
R L =4
R L =2
11040338.004.png
TDA7365
Figure 1: P.C.Board and component layout of the Test and Application Circuit 1:1 scale.
Figure 2: Quiescent Drain Current vs. Supply
Voltage
Figure 3: Output Power vs. Supply Voltage
Figure 4: Output Power vs. Supply Voltage
Figure 5: Distortion vs. Output Power
4/7
11040338.005.png
TDA7365
Fiigure 6: Distortion vs. Frequency
Figure 7: Supply Voltage Rejection
Fiigure 8: Cross-Talk vs. Frequency
Figure 9: Switch Drop-out vs. Switch Current
Figure 10: Total Power Dissipation and Efficiency
vs. Output Power
Figure 11: Total Power Dissipation and Efficiency
P to t (W)
P tot
5/7
11040338.001.png

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