TDA7575B STMicroelectronics, TDA7575B Datasheet - Page 24

• Manufacturer Part Number: TDA7575B
• Description: IC AMP DUAL BRIDGE FLEXIWATT27
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA7575B

• 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
• Audio Amplifier Output Configuration: 1-Channel Mono/2-Channel Stereo
• Output Power (typ): 150x1@1Ohm/75x2@2OhmW
• Audio Amplifier Function: Speaker
• Input Offset Voltage: 45@14.4VmV
• Total Harmonic Distortion: 0.02@4Ohm@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: Through Hole
• Pin Count: 27
• Package Type: FLEXIWATT(Vertical)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Diagnostics functional description
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Figure 31. SVR and output pin behavior - case 2: with turn-on diagnostic
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:
Figure 32. Short circuit detection thresholds
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:
Figure 33. Load detection thresholds - high gain setting
If the line-driver mode (Gv= 12 dB and line driver mode diagnostic = 1) is selected, the same
thresholds will change as follows:
Figure 34. Load detection thresholds - high gain setting
I2CB DATA
Vsvr
Out
Diagnostic Enable
(Turn-on)
0Ω
0V
0V
S.C. across Load
acquisition time (100mS Typ)
S.C. across Load
Bias (power amp turn-on)
S.C. to GND
Turn-on diagnostic
permitted time
Turn-on Diagnostics data (output)
0.5Ω
1.5Ω
Doc ID 14103 Rev 2
1.2V
x
x
permitted time
x
1.5Ω
4.5Ω
1.8V
Normal Operation
Normal Operation
Normal Operation
V
70Ω
Read Data
S
200Ω
-1.5V
x
x
x
400Ω
Diagnostic Enable
V
130Ω
(Permanent)
S
-0.9V
Open Load
Open Load
S.C. to Vs
D01AU1252
D01AU1254
D02AU1341
Permanent Diagnostics data (output)
Permanent diagnostic
acquisition time (100mS Typ)
Infinite
infinite
permitted time
V
FAULT
S
event
TDA7575B
t