STA541SA

Practical information

Doc ID 16988 Rev 2

19/26

7.4.4

Thermal shutdown

With the thermal shutdown feature the diagnostics output on pin 10 signals the closeness of

the junction temperature to the shutdown threshold. Typically, current sinking at pin 10 starts

approximately 10 °C before the shutdown temperature is reached.

Figure 18.

Configuration of pin DIAG

Figure 19.

Fault waveforms on pin DIAG

VREF

R

10

STA541SA

Soft short

OUT to Vs short

Fault detection

Correct turn-on

OUT to GND short

t

t

t

STBY pin

voltage

2 V

Output

waveform

Vpin10

Check at turn-on

(rest phase)

Short to GND

or to Vs

D05AU1603mod