TDA7370BV STMicroelectronics, TDA7370BV Datasheet - Page 12

• Manufacturer Part Number: TDA7370BV
• Description: IC AMP QUAD PWR CAR MULTIWATT15V
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA7370BV

• Output Type: 2-Channel (Stereo) or 4-Channel (Quad)
• Max Output Power X Channels @ Load: 20W x 2 @ 4 Ohm; 6.5W x 4 @ 4 Ohm
• Voltage - Supply: 8 V ~ 18 V
• Features: Depop, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Through Hole
• Package / Case: Multiwatt-15 (Vertical, Bent and Staggered Leads)
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 1-Channel Mono/2-Channel Stereo/4-Channel Stereo
• Audio Amplifier Function: Speaker
• Single Supply Voltage (typ): 9/12/15V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Power Dissipation: 36W
• Rail/rail I/o Type: Rail to Rail Output
• Single Supply Voltage (min): 8V
• Single Supply Voltage (max): 18V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 150C
• Operating Temperature Classification: Automotive
• Mounting: Through Hole
• Pin Count: 15 +Tab
• Package Type: MULTIWATT V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7370B
Polarity Inversion
High current (up to 10A) can be handled by the
device with no damage for a longer period than
the blow-out time of a quick 2A fuse (normally
connected in series with the supply). This fea-
tures is added to avoid destruction, if during fitting
to the car, a mistake on the connection of the
supply is made.
Open Ground
When the radio is in the ON condition and the
ground is accidentally opened, a standard audio
amplifier will be damaged. On the TDA7370B pro-
tection diodes are included to avoid any damage.
Inductive Load
A protection diode is provided to allow use of the
TDA7370B with inductive loads.
DC Voltage
The maximum operating DC voltage for the
TDA7370B is 18V.
However the device can withstand a DC voltage
up to 28V with no damage. This could occur dur-
ing winter if two batteries are series connected to
crank the engine.
Thermal Shut-down
The presence of a thermal limiting circuit offers
the following advantages:
12/17
1)an overload on the output (even if it is perma-
2)the heatsink can have a smaller factor of
nent), or an excessive ambient temperature
can be easily withstood.
The maximum allowable power dissipation de-
pends upon the size of the external heatsink (i.e.
its thermal resistance); Fig. 23 shows the dissi-
pable power as a function of ambient temperature
for different thermal resistance.
Figure 23: Maximum Allowable Power
Loudspeaker Protection
The TDA7370B guarantees safe operations even for
the loudspeaker in case of accidental shortcircuit.
Whenever a single OUT to GND, OUT to V
circuit occurs both the outputs are switched OFF
so limiting dangerous DC current flowing through
the loudspeaker.
safety compared with that of a conventional
circuit. There is no device damage in case of
excessive junction temperature: all happens
is that P
duced.
Dissipation vs. Ambient Temperature
o
(and therefore P
tot
) and I
d
are re-
S
short