LX8117-05CDD

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PMIC (Power Management Integrated Circuit) Voltage Regulators are commonly used to regulate and control voltage and power across a wide range of applications, which include energy consumption, power supply, and heat dissipation. The LX8117-05CDD is a low dropout voltage regulator that belongs to the category of linear voltage regulators. It is an integrated circuit solution that is suitable for applications such as portable systems, point-of-load converters, and automotive systems, among others.

The LX8117-05CDD is designed to include many features like protection against over current, over voltage, and reverse polarity, as well as a low dropout voltage, meaning that it only requires a small voltage (usually around 0.2V) to produce the desired output voltage. Additionally, the LX8117-05CDD is proficient in providing power supply current up to 1A and has built-in enable and disable function for better power saving and saving board space. This integrated circuit also provides short circuit protection and a PGOOD (Power Good) signal. Apart from the above, this integrated circuit device is considered as a low noise solution when it comes to voltage regulation.

The working principle of the LX8117-05CDD is simple. It employs an error amplifier to compare the output voltage and the feedback voltage by creating an error voltage, which is then adjusted by a modulator in order to achieve rapid voltage control. An error voltage below the reactive range means that the output voltage is too low and the associated operational amplifier will increase it while a higher error voltage will cause the associated operational amplifier to reduce it. The output is then smoothed out by a filter and voltage regulation is achieved. The control loop is stable, as it employs an internal compensation network for controlling impedance and phase characteristics. The LX8117-05CDD also extends its power supply life by providing a low dropout voltage.

The LX8117-05CDD can be used in a wide range of applications such as point-of-load converters, cellular phones, PDAs, portable electronics, laptop adapters, LCD monitors, and automotive systems. It is compatible with a wide input voltage range and can provide a fixed output voltage of 3.3V, 5V, 7.5V, or 12V. This device can also operate at high frequency, up to 2MHz, and also provides very low output noise. This integrated circuit device features a high PSRR (Power Supply Ripple Rejection) which enables it to produce very low noise, even in environments with noisy AC power

In conclusion, the LX8117-05CDD is a compact, low-dropout linear voltage regulator that ensures smooth voltage regulation even under varying power supply conditions. This device is suitable for applications such as portable systems, point-of-load converters, and automotive systems. Its working principle is based on the operation of an error amplifier and a modulator to control the output voltage. The LX8117-05CDD can also operate at frequencies up to 2MHz and provides low noise output due to its high PSRR. Therefore, this device is a great choice for high performance voltage regulation in portable and automotive systems.

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