ST TDA7372A User Manual
®
4 x 6W POWER AMPLIFIER FOR CAR RADIO
HIGH POWER CAPABILITY:
4x6W min/4Ω @14.4V, 1KHz, 10%
4x10W typ/2Ω @14.4V, 1KHz, 10%
MINIMUM EXTERNAL COMPONEN T COUNT
- INTERNALLY FIXED GAIN (20dB)
- 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
PROGRAMMABLE TURN ON DELAY
TDA7372A
MULTIWATT15
ORDERING NUMBER:
FORTUITOUS OPEN GND
REVERSED BATT ERY
ESD PROTECTION
TDA7372A
PROTECTIONS:
AC OUTPUT SHORT CIRCUIT TO GND
DC OUTPUT SHORT CIRCUIT TO GND AND
TO V
AT POWER ON
S
SOFT THERMAL LIMITER
OVERRATING CHIP TEMPERATURE
LOAD DUMP VOLTAGE
BLOCK DIAGRAM
DESCRIPTION
The TDA7372A is a new t echnolo gy c lass AB quad
channels Audio Power Amplifier in Multiwatt15
package designed for car radio applications.
Thanks to the fully complementary PNP/NPN output configuration the TDA7372A delivers a rail to
rail voltage swing with no need of boostrap capacitors.
September2003
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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TDA7372A
PIN CONNECTION
(Top view)
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
DC Supply Voltage 28 V
S
Operating Supply Voltage 18 V
OP
Peak Supply Voltage (t = 50ms) 50 V
Output Peak Current (not rep. t = 100µs) 4 A
O
Output Peak Current (rep. f > 10Hz) 3 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
P
stg
THERMAL DATA
Symbol Description Value Unit
R
th j-case
Thermal Resistance Junction-case Max 2 °C/W
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TDA7372A
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 R
CT Cross Talk f = 1kHz; R
R
IN
G
V
G
V
BW Bandwidth @ -3dB 100 KHz
E
NO
SVR Supply Voltage Rejection R
ASB Stand-by Attenuation 80 dB
I
SB
I
PIN 7
V
SB IN
V
SB OUT
A
M
V
M IN
V
M OUT
(*) 22Hz to 22KHz
Supply Range 8 18 V
Total Quiescent Drain Current 150 mA
Output Power RL = 4Ω; THD = 10%
6 6.5 W
each channel
= 2Ω; THD = 10%
R
L
10 W
each channel
= 4Ω;
L
P
= 0.1 to 3W
O
f = 10kHz; R
g
= 0
= 0
g
54 60
0.04 0.3 %
55
Input Impedance 35 KΩ
Voltage Gain 19 20 21 dB
Voltage Gain Match. 1 dB
Output Noise Voltage (*) Rg = 0 120 µV
= 0; f = 100Hz 48 dB
g
ST-BY Current Consumption Vpin7 = 1.5V 100 µA
ST-BY Pin Current Play mode; Vpin7 = 5V 30 µA
Output Under Short (Max
5mA
driving current under fault)
ST-BY IN Threshold Voltage 1.5 V
ST-BY OUT Threshold Voltage 3.5 V
MUTE Attenuation 80 dB
MUTE IN Threshold Voltage 1.5 V
MUTE OUT Threshold Voltage 3.5 V
dB
dB
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