A circuit, comprising: - an output node (Vo) configured to supply a regulated voltage signal to a supplied load, - processing circuitry sensitive to the regulated voltage at the output node (Vo) and to a temperature of the circuit, the processing circuit configured to provide voltage and temperature sensing signals indicative of the regulated voltage at the output node (Vo) and the temperature of the circuit, wherein the processing circuitry is configured (16, 18, 100 to 110) to assume: - i) a first state (102, 106, 108), as a result of the voltage sensing signal reaching a voltage threshold (Vo_hth), - ii) a second state (102, 106, 112, 114), as a result of the temperature detection signal reaching a temperature threshold (Tth), - iii) a third state (102, 104), as a result of both the voltage and the temperature sensing signals failing to reach said thresholds (Vo_hth, Tth), the circuit comprising a warning output (A_TW) coupled to a warning signal generation network (101, 101a, 14; 102, 102a, GND; 103, 103a, V3V3) controlled by the processing circuitry, the warning signal generation network configured to drive (101a, 102a, 103a) the warning output (A_TW) in a first, a second and a third drive mode as a result of the processing circuitry being in said first, second and third state, respectively, characterized in that: said warning signal generation network (101, 101a, 14; 102, 102a, GND; 103, 103a, V3V3) is configured to drive said warning output (A_TW) in driving modes selected out of: - an alternating signal (1st burst, 2nd burst,..., nth burst; 14) applied to the warning output (A_TW); - a first logic value (L, GND) applied to the warning output (A_TW); - a second logic value (H, V3V3) applied to the warning output (A_TW); and the circuit comprises an alternating signal generator supplied with a supply voltage (V3V3), and wherein said warning signal generation network (101, 101a, 14; 102, 102a, GND; 103, 103a, V3V3) is configured to apply to the warning output (A_TW) said alternating signal (1st burst, 2nd burst,..., nth burst), said first logic value (L, GND) and said second logic value (H, V3V3) by coupling (101a, 102a, 103a) the warning output (A_TW) to said alternating signal generator, to ground and to said supply voltage (V3V3). - an output node (Vo) configured to supply a regulated voltage signal to a supplied load, - processing circuitry sensitive to the regulated voltage at the output node (Vo) and to a temperature of the circuit, the processing circuit configured to provide voltage and temperature sensing signals indicative of the regulated voltage at the output node (Vo) and the temperature of the circuit, wherein the processing circuitry is configured (16, 18, 100 to 110) to assume: - i) a first state (102, 106, 108), as a result of the voltage sensing signal reaching a voltage threshold (Vo_hth), - ii) a second state (102, 106, 112, 114), as a result of the temperature detection signal reaching a temperature threshold (Tth), - iii) a third state (102, 104), as a result of both the voltage and the temperature sensing signals failing to reach said thresholds (Vo_hth, Tth), - i) a first state (102, 106, 108), as a result of the voltage sensing signal reaching a voltage threshold (Vo_hth), - ii) a second state (102, 106, 112, 114), as a result of the temperature detection signal reaching a temperature threshold (Tth), - iii) a third state (102, 104), as a result of both the voltage and the temperature sensing signals failing to reach said thresholds (Vo_hth, Tth), said warning signal generation network (101, 101a, 14; 102, 102a, GND; 103, 103a, V3V3) is configured to drive said warning output (A_TW) in driving modes selected out of: - an alternating signal (1st burst, 2nd burst,..., nth burst; 14) applied to the warning output (A_TW); - a first logic value (L, GND) applied to the warning output (A_TW); - a second logic value (H, V3V3) applied to the warning output (A_TW); and - an alternating signal (1st burst, 2nd burst,..., nth burst; 14) applied to the warning output (A_TW); - a first logic value (L, GND) applied to the warning output (A_TW); - a second logic value (H, V3V3) applied to the warning output (A_TW); and the circuit comprises an alternating signal generator supplied with a supply voltage (V3V3), and wherein said warning signal generation network (101, 101a, 14; 102, 102a, GND; 103, 103a, V3V3) is configured to apply to the warning output (A_TW) said alternating signal (1st burst, 2nd burst,..., nth burst), said first logic value (L, GND) and said second logic value (H, V3V3) by coupling (101a, 102a, 103a) the warning output (A_TW) to said alternating signal generator, to ground and to said supply voltage (V3V3).