ST TDA7365 User Manual
®
OUTPUT POWER 2x6W/4Ω @14.4V, 1KHz,
10%
SOLID STATE POWER SW ITCH INCLUDED
(1A @ V
MINIMUM EXTERNAL COMPONEN T COUNT
- INTERNALLY FIXED GAIN (40dB)
- NO BOOTSTRAP CAPACITORS
- NO EXTERNAL COMPENSATION
ST-BY FUNCTION (CMOS COMPA TIBLE)
MUTE FUNCTION (CMOS COMPAT IBLE)
NO AUDIBLE POP DURING MUTE/ST-BY
OPERATIONS
LOW SUPPLY SELF MUTING
PROTECTIONS
AC AUDIO OUTPUTS SHORT CIRCUIT TO
GND
DC AUDIO OUTPUTS SHORT CIRCUIT TO
GND AND TO V
SWITCH OUTPUT INTERNAL CURRENT
LIMITATION
OVERRATING CHIP TEMPERATURE WITH
SOFT THERMAL LIMITER
LOAD DUMP
FORTUITOUS OPEN GND
DROP
= 0.8V Typ.)
AT POWER ON
S
TDA7365
2 x 6W CAR RADIO AMPLIFIER
PLUS SOLID STATE SWITCH
MULTIWATT15
ORDERING NUMBER:
REVERSE BATTER Y
ESD
DESCRIPTION
The TDA7 365 is a n ew technology Dual Audio Amplifier in Multiwatt15 package especially designed
for stereo car radio applications.
Thanks to the fully complementary output configuration 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 t he audio sect ion, suitabl e for
supplying b ot h the sign al pr ocess ing pa rt of th e 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.
TDA7365
BLOCK DIAGRAM
September 2003
1/7
TDA7365
PIN CONNECTION
(Top view)
Vs
Vs
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
DC Supply Voltage 28 V
S
Operating Supply Voltage 18 V
OP
Peak Supply Voltage (t = 50ms) 40 V
Audio Channels Output Peak Current (not rep. t = 100µs) 4 A
O
Audio Channels Output Peak Current (rep. f > 10Hz) 3 A
O
Switch Output Peak Current (internally limited) 1.5 A
O
Power Dissipation (T
tot
= 85°C) 32 W
case
, TjStorage and Junction Temperature -40 to 150 °C
T
V
V
V
PEAK
I
I
I
P
stg
THERMAL DATA
Symbol Description Value Unit
R
th j-case
Thermal Resistance Junction-case Max 2 °C/W
2/7
TDA7365
ELECTRICAL CHARACTERISTICS
(Refer to the test circuit; V
= 14.4V; RL = 4Ω, T
S
= 25°C,
amb
f = 1kHz, unless otherwise specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
I
d
P
O
d Distortion P
CT Cross Talk f = 1kHz; R
R
IN
G
V
G
V
E
IN
SVR Supply Voltage Rejection R
ASB Stand-by Attenuation 60 90 dB
I
SB
V
SB IN
V
SB OUT
V
M IN
V
M OUT
Supply Range 8 18 V
Total Quiescent Drain Current Power Switch Unloaded 80 mA
Output Power RL = 4Ω; THD = 10%
5.5 6 W
each channel
= 2Ω; THD = 10%
R
L
9W
each channel
= 0.1 to 3W 0.08 0.3 %
O
f = 10kHz; R
g
= 0
= 0
g
50 55
50
Input Impedance 40 50 KΩ
Voltage Gain 39 40 41 dB
Voltage Gain Match. 1 dB
Input Noise Voltage (*) Rg = 0 1.2 5 µV
= 0 ; f = 100Hz;
g
V
= 0.5V
r
rms
45 50 dB
ST-BY Current Consumption 100 µA
ST-BY IN Threshold Voltage 1.5 V
ST-BY OUT Threshold Voltage 3.5 V
MUTE IN Threshold Voltage 1.5 V
MUTE OUT Threshold Voltage 3.5 V
dB
dB
POWER SWITCH CHARACTERIST ICS
Symbol Parameter Test Condition Min. Typ. Max. Unit
I
Op
V
DROP
(*) 22Hz to 22KHz
(**) A weighted
Continuous Output Current 1.2 A
Dropout Voltage Io = 1A 1.4 V
TEST AND APPLICATION CIRCUIT
+V
s
470µF
C5
47µF C10
0.22µF C1
0.22µF C2
10K R1
0.1µF
C7
0.1µF
C6
ST-BY
S-GND
SVR
IN1
IN2
50K
50K
POWER
SWITCH
PWR SWITCH
OUTPUT
4.7µF
PW-GND
OUT1
1000µF C4
OUT2
10K R2
MUTE
VOLTAGE REGULATOR
SUPPLYING THE LOW
C9
1000µF C3
10µF
C8
D94AU116B
TO THE
SIGNAL SECTION
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