IC AMP AUDIO 150W AB 27FLEXIWATT

TDA7575

Manufacturer Part NumberTDA7575
DescriptionIC AMP AUDIO 150W AB 27FLEXIWATT
ManufacturerSTMicroelectronics
TypeClass AB
TDA7575 datasheets
 


Specifications of TDA7575

Output Type1-Channel (Mono) or 2-Channel (Stereo)Max Output Power X Channels @ Load150W x 1 @ 1 Ohm; 75W x 2 @ 2 Ohm
Voltage - Supply8 V ~ 18 VFeaturesDifferential Inputs, I²C, Mute, Short-Circuit and Thermal Protection, Standby
Mounting TypeThrough HolePackage / Case27-Flexiwatt (bent and staggered leads)
Operational ClassClass-ABOutput Power (typ)150x1@1Ohm/75x2@2OhmW
Audio Amplifier FunctionSpeakerTotal Harmonic Distortion0.02@1Ohm@30W%
Single Supply Voltage (typ)9/12/15VDual Supply Voltage (typ)Not RequiredV
Power Supply RequirementSinglePower Dissipation86W
Rail/rail I/o TypeNoSingle Supply Voltage (min)8V
Single Supply Voltage (max)18VDual Supply Voltage (min)Not RequiredV
Dual Supply Voltage (max)Not RequiredVOperating Temp Range-55C to 150C
Operating Temperature ClassificationMilitaryMountingSurface Mount
Pin Count36Package TypePSOP
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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DOCUMENT CD00003142
REVISION 3.0
The information related to the outputs status is read and memorized at the end of the current pulse top. The
acquisition time is 100 ms (typ.). No audible noise is generated in the process. As for SHORT TO GND / Vs the
fault-detection thresholds remain unchanged from 26 dB to 12 dB gain setting. They are as follows:
S.C. to GND
0V
Concerning SHORT ACROSS THE SPEAKER / OPEN SPEAKER, the threshold varies from 26 dB to 12 dB
gain setting, since different loads are expected (either normal speaker's impedance or high impedance). The
values in case of 26 dB gain are as follows:
S.C. across Load
0V
If the Line-Driver mode (Gv= 12 dB and Line Driver Mode diagnostic = 1) is selected, the same thresholds will
change as follows:
S.C. across Load
0Ω
b) PERMANENT DIAGNOSTICS.
Detectable conventional faults are:
– SHORT TO GND
– SHORT TO Vs
– SHORT ACROSS THE SPEAKER
The following additional features are provided:
– OUTPUT OFFSET DETECTION
The TDA7575PD has 2 operating statuses:
1) RESTART mode. The diagnostic is not enabled. Each audio channel operates independently from each oth-
er. If any of the a.m. faults occurs, only the channel(s) interested is shut down. A check of the output status is
made every 1 ms (fig. G). Restart takes place when the overload is removed.
2) DIAGNOSTIC mode. It is enabled via I
tervention of the short-circuit protection) occurs to the speakers outputs . Once activated, the diagnostics pro-
cedure develops as follows (fig. H):
– To avoid momentary re-circulation spikes from giving erroneous diagnostics, a check of the output
status is made after 1ms: if normal situation (no overloads) is detected, the diagnostic is not per-
formed and the channel returns back active.
– Instead, if an overload is detected during the check after 1 ms, then a diagnostic cycle having a du-
ration of about 100 ms is started.
– After a diagnostic cycle, the audio channel interested by the fault is switched to RESTART mode. The
Copyright STMicroelectronics
ACTIVE
x
Normal Operation
x
1.2V
1.8V
V
-1.5V
V
S
x
Normal Operation
x
0.5Ω
1.5Ω
70Ω
130Ω
x
Normal Operation
x
1.5Ω
4.5Ω
200Ω
400Ω
2
C bus and self activates if an output overload (such to cause the in-
COMPANY INTERNAL
DATE 22-Mar-2004
TDA7575PD
S.C. to Vs
-0.9V
V
S
S
D02AU1341
Open Load
Infinite
D01AU1254
Open Load
infinite
D01AU1252
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