TDA7575B STMicroelectronics, TDA7575B Datasheet - Page 27

• 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

TDA7575B
7.5
Figure 37
relevant diagnostic fields.
This feature is disabled if any overloads leading to activation of the short-circuit protection
occurs in the process.
Figure 37. Current detection high: load impedance |Z| vs. output peak voltage
Figure 38. Current detection low: load impedance |Z| vs. output peak voltage
Multiple faults
When more misconnections are simultaneously in place at the audio outputs, it is
guaranteed that at least one of them is initially read out. The others are notified after
successive cycles of I
This is true for both kinds of diagnostic (turn-on and permanent).
The table below shows all the couples of double-fault possible. It should be taken into
account that a short circuit with the 4 Ω speaker unconnected is considered as double fault.
shows the load impedance as a function of the peak output voltage and the
Load |z| (Ohm)
50
30
20
10
5
3
2
1
Load |z| (Ohm)
50
30
20
10
5
3
2
1
0.5
Low current detection area
1
D5 = 1 of the DBx byres
Low current detection area
2
D5 = 1 of the DBx byres
C reading and faults removal, provided that the diagnostic is enabled.
(Open load)
(Open load)
1
2
Doc ID 14103 Rev 2
1.5
3
Vout (Peak)
Vout (Peak)
2
4
High current detection area
High current detection area
D5 = 0 of the DBx bytes
D5 = 0 of the DBx bytes
(Normal load)
2.5
(Normal load)
5
3
6
Diagnostics functional description
3.5
7
4
8
IB2(D0) = 1
Iout (peak) <125mA
Iout (peak) >250mA
Iout (peak) <250mA
Iout (peak) >500mA
IB2(D0) = 0
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