The LDK130M12R Low Drop Out (LDO) Voltage Regulator with 300mA Low Quiescent Crnt low noise is a highly stable device manufactured by STMicroelectronics. It is a monolithic device built on an advanced process technology to provide low drop out (LDO) voltage regulation with ultralow noise performance. It is ideal for use in mobile and other portable electronic devices, including cellular phones, PDAs, audio and portable instrumentation, medical equipment, and automotive applications. This LDO voltage regulator features an input range from 1.2V to 5.5V and an output range from 0.5V to 4.2V. It provides up to 300mA of output current and can be configured for a variety of voltage settings, and can work with ceramic output capacitors of 10uF and above. It also offers high levels of protection against a wide range of faults, including output overload, input overvoltage, short circuit, thermal protection, and reverse battery protection. In summary, the LDK130M12R is an excellent low-noise voltage regulator ideal for a variety of applications.