TDA7575 STMicroelectronics, TDA7575 Datasheet - Page 14

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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TDA7575
Fig. G: Restart timing without Diagnostic Enable (Permanent)
Each 1mS time, a sampling of the fault is done
Fig H: Restart timing with Diagnostic Enable (Permanent)
OUTPUT DC OFFSET DETECTION.
Any DC output offset exceeding +/- 2 V are signalled out. This inconvenient might occur as a consequence of
initially defective or aged and worn-out input capacitors feeding a DC component to the inputs, so putting the
speakers at risk of overheating.
This diagnostic has to be performed with low-level output AC signal (or Vin = 0).
The test is run with selectable time duration by microprocessor (from a "start" to a "stop" command):
Excess offset is signalled out if persistent throughout the assigned testing time. This feature is disabled if any
overloads leading to activation of the short-circuit protection occurs in the process.
14/17
circuit protection intervention
– To check the status of the device a sampling system is needed. The timing is chosen at microproces-
– START = Last reading operation or setting IB1 - D5 - (OFFSET enable) to 1
– STOP = Actual reading operation
circuit protection intervention
(i.e. short circuit to GND)
relevant data are stored inside the device and can be read by the microprocessor. When one cycle
has terminated, the next one is activated by an I
throughout the car-radio operating time.
sor level (over than half a second is recommended).
Overcurrent and short
(i.e. short circuit to GND)
Overcurrent and short
1-2mS
1mS
1mS
100mS
1mS
1mS
2
C reading. This is to ensure continuous diagnostics
1mS
Short circuit removed
1mS
1mS
t
Short circuit removed
t
Out

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