TDA7563 STMicroelectronics, TDA7563 Datasheet - Page 10

• Manufacturer Part Number: TDA7563
• Description: IC AMP AUDIO 72W AB 27FLEXIWATT
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA7563

• Output Type: 4-Channel (Quad)
• Max Output Power X Channels @ Load: 72W x 4 @ 2 Ohm
• Voltage - Supply: 8 V ~ 18 V
• Features: I²C, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Through Hole
• Package / Case: 27-Flexiwatt (bent and staggered leads)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-2183-5

TDA7563
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 30 dB to 16 dB gain setting. They are as follows:
Concerning SHORT ACROSS THE SPEAKER / OPEN SPEAKER, the threshold varies from 30 dB to 16 dB
gain setting, since different loads are expected (either normal speaker's impedance or high impedance). The
values in case of 30 dB gain are as follows:
If the Line-Driver mode (Gv= 16 dB and Line Driver Mode diagnostic = 1) is selected, the same thresholds will
change as follows:
b) PERMANENT DIAGNOSTICS.
– SHORT TO GND
– SHORT TO Vs
– SHORT ACROSS THE SPEAKER
The following additional features are provided:
– OUTPUT OFFSET DETECTION
The TDA7563 has 2 operating statuses:
1 RESTART mode. The diagnostic is not enabled. Each audio channel operates independently from each
2 DIAGNOSTIC mode. It is enabled via I
10/20
Detectable conventional faults are:
other. 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. 19). Restart takes place when the overload is removed.
the intervention of the short-circuit protection) occurs to the speakers outputs . Once activated, the di-
agnostics procedure develops as follows (fig. 20):
0V
0
0V
S.C. across Load
S.C. across Load
S.C. to GND
0.5
1.5
1.2V
x
x
x
1.5
4.5
2
1.8V
Normal Operation
Normal Operation
C bus and self activates if an output overload (such to cause
Normal Operation
V
70
S
200
-1.8V
x
x
x
400
V
130
S
-1.2V
Open Load
Open Load
S.C. to Vs
D01AU1254
D01AU1252
D01AU1253
Infinite
infinite
V
S