NCP176 LDO Voltage Regulators onsemi NCP176 LDO Voltage Regulators are fast transient response low voltage 500mA LDO regulators. The input voltage ranges from 1.4V to 5.5V and output voltage ranges from 0.7V to 3.6V. onsemi NCP176 LDO Voltage Regulators are Lead-free and feature over-current and thermal shutdown protection.