LDK120C28R

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LDK120C28R is a Linear Voltage Regulator designed by Noxy Technology, particularly used in Power Management Integrated Circuit (PMIC) applications.

This LDK120C28R is a three-terminal voltage regulator that works on a fixed-voltage drop from its input to output voltage. It features on-chip thermal security, ultra-low quiescent current, low-dropout voltage, protection from ground fault and more. Currently, a wide range of industry standard packages are available, such as SOT-23, TO-220FM and TSSOP-8.

The LDK120C28R is a linear voltage regulator that helps to maintain a regulated output voltage when the input voltage drops. It is designed to provide a constant regulated voltage in non-isolated systems, such as automotive power systems or consumer electronics, where battery supply voltages may vary widely due to load changes or system conditions.

Like any voltage regulator, the LDK120C28R device has three main terminals namely the input Voltage (Vin), the ground terminal (GND) and the output voltage (Vout). The internal circuitry processes and converts the input voltage to a predetermined voltage value.

The working principle of the LDK120C28R is based on the simple concept of Zener diode voltage regulation. If a constant current (Iz) is connected across a zener diode, the output of the zener diode will remain constant (VZ). This is the main principle underlying the functioning of the LDK120C28R device.

The device is using an internal feedback loop, by comparing the output voltage with an internally preset reference voltage and then adjusting it instantly. This feedback loop helps to keep the output voltage constant, provided that the input voltage range is maintained within the specified range. In order to achieve the desired output voltage, an internal pass element is used. The current drawn by this pass element is dependent on the input voltage and the power dissipation of the device.

The LDK120C28R voltage regulator comprises of additional features like built-in overcurrent, overtemperature and undervoltage protection. These features help in preventing the device from malfunctioning due to possible unwanted conditions like overcurrent or over temperature. Also, the design of the device includes a ground fault function, which is useful in detecting any internally caused ground fault and, in turn, protecting the device from damages.

In summary, the LDK120C28R linear voltage regulator is a device that is designed specifically to convert the input voltage to a regulated and precise output voltage level within a predetermined range. The device boasts a wide range of industry standard packages and reliability, along with protection against overcurrent, over temperature and ground fault.

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