A low drop out, LDO, voltage regulator circuit comprising: a high gain amplifier having an output; an output transistor having a drain electrode coupled to a voltage supply terminal configured to receive a voltage supply signal (Vbat), and a source electrode coupled to an output of the LDO voltage regulator circuit configured to provide a regulated voltage supply signal, the output of the LDO voltage regulator circuit configured to be connectable to a load; and a node coupled to a gate electrode of the output transistor; characterized in that the high gain amplifier is a high gain operational transconductance amplifier, OTA configured to receive a current biasing signal and a differential input voltage; the LDO voltage regulator circuit further comprises: a cascode transistor mirror circuit (344, 360) coupled to the voltage supply terminal coupled to the output of the high gain OTA and coupled to the node, the cascode transistor mirror circuit (344, 360) configured to convert the differential input voltage of the high gain OTA to a single ended output voltage on the node; a regulation adjustment circuit operably coupled to receive the regulated voltage supply signal and comprising a comparator configured to compare a voltage (Vout) of the regulated voltage supply signal with a threshold (237, wd_ref), wherein the comparator is configured to supply, at an output thereof, a dynamic current boost to the current biasing signal, in response to the voltage (Vout) of the regulated voltage supply signal dropping below the threshold (237, wd_ref); wherein the output of the high gain OTA is coupled to the cascode transistor mirror circuit (344, 360) such that the cascode transistor mirror circuit (344, 360) is configured to receive the dynamic current boost, independent from the current biasing signal; and wherein the LDO voltage regulator circuit further comprises a compensation capacitor configured to provide a capacitive coupling between the output of the comparator and the node, thereby increasing the voltage (Vout) of the regulated voltage supply signal and reducing an LDO voltage regulator sensitivity to a load current increase. a high gain amplifier having an output; an output transistor having a drain electrode coupled to a voltage supply terminal configured to receive a voltage supply signal (Vbat), and a source electrode coupled to an output of the LDO voltage regulator circuit configured to provide a regulated voltage supply signal, the output of the LDO voltage regulator circuit configured to be connectable to a load; and a node coupled to a gate electrode of the output transistor; characterized in that the high gain amplifier is a high gain operational transconductance amplifier, OTA configured to receive a current biasing signal and a differential input voltage; the LDO voltage regulator circuit further comprises: a cascode transistor mirror circuit (344, 360) coupled to the voltage supply terminal coupled to the output of the high gain OTA and coupled to the node, the cascode transistor mirror circuit (344, 360) configured to convert the differential input voltage of the high gain OTA to a single ended output voltage on the node; a regulation adjustment circuit operably coupled to receive the regulated voltage supply signal and comprising a comparator configured to compare a voltage (Vout) of the regulated voltage supply signal with a threshold (237, wd_ref), wherein the comparator is configured to supply, at an output thereof, a dynamic current boost to the current biasing signal, in response to the voltage (Vout) of the regulated voltage supply signal dropping below the threshold (237, wd_ref); wherein the output of the high gain OTA is coupled to the cascode transistor mirror circuit (344, 360) such that the cascode transistor mirror circuit (344, 360) is configured to receive the dynamic current boost, independent from the current biasing signal; and wherein the LDO voltage regulator circuit further comprises a compensation capacitor configured to provide a capacitive coupling between the output of the comparator and the node, thereby increasing the voltage (Vout) of the regulated voltage supply signal and reducing an LDO voltage regulator sensitivity to a load current increase. a cascode transistor mirror circuit (344, 360) coupled to the voltage supply terminal coupled to the output of the high gain OTA and coupled to the node, the cascode transistor mirror circuit (344, 360) configured to convert the differential input voltage of the high gain OTA to a single ended output voltage on the node; a regulation adjustment circuit operably coupled to receive the regulated voltage supply signal and comprising a comparator configured to compare a voltage (Vout) of the regulated voltage supply signal with a threshold (237, wd_ref), wherein the comparator is configured to supply, at an output thereof, a dynamic current boost to the current biasing signal, in response to the voltage (Vout) of the regulated voltage supply signal dropping below the threshold (237, wd_ref); wherein the output of the high gain OTA is coupled to the cascode transistor mirror circuit (344, 360) such that the cascode transistor mirror circuit (344, 360) is configured to receive the dynamic current boost, independent from the current biasing signal; and wherein the LDO voltage regulator circuit further comprises a compensation capacitor configured to provide a capacitive coupling between the output of the comparator and the node, thereby increasing the voltage (Vout) of the regulated voltage supply signal and reducing an LDO voltage regulator sensitivity to a load current increase.