LV49152V-TLM-E Datasheet, PDF (16/24 Pages) ON Semiconductor – Class-D Audio Power Amplifier BTL 15W2ch

Thermal protection circuit
LV49152V
The LV49152V includes a thermal protection circuit to prevent damage to or destruction of the IC should abnormal
internal heat generation occur.
This means that should the IC junction temperature (Tj) rise above about 175°C due to inadequate heat dissipation or
other reason, the thermal protection circuit will operate to stop IC operation should the temperature rise further.
If the temperature is reduced by lowering the input level or other means, the thermal protection circuit will recover
automatically (about 105°C).
Recovery
Attack
Hystsrisis
Temperature (Tj) rise
Internal
TSD DET.
PWM
Shut
down
Internal
TSD DET.
PWM
Temperature (Tj) fall
Shut down
40 50 60 70 80 90 100 110 110 130 110 150 160 170 180 190 200
Junction temperature Tj [°C]
Function image
* The thermal protection circuit is a function to avoid the abnormal state temporarily.
Unfortunately, we cannot guarantee that IC is not destroyed.
No.A1408-16/24