Thermal protection

An internal thermal feedback loop disables the output voltage if the die temperature reaches approximately 160

°C. This feature protects the device from excessive temperature that could lead to permanent damage to the

LDO.

Once the thermal protection is triggered and the device is shut down, normal operation is automatically recovered

if the die temperature falls below 140 °C (thermal protection hysteresis of 20 °C typically).

Continuous operation above the maximum ratings may lead to permanent damage to the device.

In case of operations with strongly inductive loads, undershoots on the output may happen. If those negative

spikes overcome the absolute maximum ratings of the device, permanent damage may occur. A Schottky diode

connected in parallel to the output port reduces the risk of damages in such operating cases.

ST732

Protection features

DS12561 - Rev 3

page 8/21