The LM5190-Q1 includes an internal junction temperature monitor. If the temperature
exceeds 175°C (typical), thermal shutdown occurs. When entering thermal shutdown, the
device:
- Turns off the high-side and low-side
MOSFETs.
- PG/SYNCOUT switches low.
- Turns off the VCC regulator.
- Initiates a soft-start sequence when
the die temperature decreases by the thermal shutdown hysteresis of 15°C (typical).
This protection is a non-latching protection, and, as such, the device cycles into and
out of thermal shutdown if the fault persists.