NCP164:
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Capacitor (C1) must be connected to IN and GND pins.
EN pin must be connected to IN pin to enable the regulator.
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From NCP164 datasheet:
EN - Chip enable: Applying VEN < 0.2 V disables the regulator, Pulling VEN > 0.7 V enables the LDO
NCV8730
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Capacitor (C27) must be connected to IN and GND pins.
EN pin must be connected to IN pin or left unconnected to enable the regulator.
Connecting EN pin to IN pin is recommended for compatibility with other regulators.
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From NCV8730 datasheet:
EN - Enable input pin (high − enabled, low − disabled). If this pin is connected to IN pin or if it is left unconnected (pull−up resistor is not required) the device is enabled.
ReikoR
commented
1 year ago 
NCP164:
\
Capacitor (C1) must be connected to IN and GND pins.
EN pin must be connected to IN pin to enable the regulator.
\
From NCP164 datasheet:
EN - Chip enable: Applying VEN < 0.2 V disables the regulator, Pulling VEN > 0.7 V enables the LDO
NCV8730
\
Capacitor (C27) must be connected to IN and GND pins.
EN pin must be connected to IN pin or left unconnected to enable the regulator.
Connecting EN pin to IN pin is recommended for compatibility with other regulators.
\
From NCV8730 datasheet:
EN - Enable input pin (high − enabled, low − disabled). If this pin is connected to IN pin or if it is left unconnected (pull−up resistor is not required) the device is enabled.