TDA7575 STMicroelectronics, TDA7575 Datasheet - Page 13

IC AMP AUDIO 150W AB 27FLEXIWATT

TDA7575

Manufacturer Part Number
TDA7575
Description
IC AMP AUDIO 150W AB 27FLEXIWATT
Manufacturer
STMicroelectronics
Type
Class ABr
Datasheets

Specifications of TDA7575

Output Type
1-Channel (Mono) or 2-Channel (Stereo)
Max Output Power X Channels @ Load
150W x 1 @ 1 Ohm; 75W x 2 @ 2 Ohm
Voltage - Supply
8 V ~ 18 V
Features
Differential Inputs, I²C, Mute, Short-Circuit and Thermal Protection, Standby
Mounting Type
Through Hole
Package / Case
27-Flexiwatt (bent and staggered leads)
Operational Class
Class-AB
Output Power (typ)
150x1@1Ohm/75x2@2OhmW
Audio Amplifier Function
Speaker
Total Harmonic Distortion
0.02@1Ohm@30W%
Single Supply Voltage (typ)
9/12/15V
Dual Supply Voltage (typ)
Not RequiredV
Power Supply Requirement
Single
Power Dissipation
86W
Rail/rail I/o Type
No
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
-55C to 150C
Operating Temperature Classification
Military
Mounting
Surface Mount
Pin Count
36
Package Type
PSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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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:
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:
If the Line-Driver mode (Gv= 12 dB and Line Driver Mode diagnostic = 1) is selected, the same thresholds will
change as follows:
b) PERMANENT DIAGNOSTICS.
Detectable conventional faults are:
The following additional features are provided:
The TDA7575 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):
– SHORT TO GND
– SHORT TO Vs
– SHORT ACROSS THE SPEAKER
– OUTPUT OFFSET DETECTION
– To avoid momentary re-circulation spikes from giving erroneous diagnostics, a check of the output
– Instead, if an overload is detected during the check after 1 ms, then a diagnostic cycle having a du-
– After a diagnostic cycle, the audio channel interested by the fault is switched to RESTART mode. The
status is made after 1ms: if normal situation (no overloads) is detected, the diagnostic is not per-
formed and the channel returns back active.
ration of about 100 ms is started.
0V
0
0V
S.C. across Load
S.C. across Load
S.C. to GND
0.5
1.5
1.2V
x
x
2
x
C bus and self activates if an output overload (such to cause the in-
1.5
4.5
1.8V
Normal Operation
Normal Operation
Normal Operation
V
70
S
200
-1.5V
x
x
x
400
V
130
S
-0.9V
Open Load
Open Load
S.C. to Vs
D01AU1254
D01AU1252
D02AU1341
Infinite
infinite
V
S
TDA7575
13/17

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