SI9185DMP-AD-T1-E3

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The SI9185DMP-AD-T1-E3 voltage regulator is a linear voltage regulator integrated circuit (IC) VREG that belongs to the power management IC (PMIC) family. It is part of the voltage regulator family of ICs, specifically a linear regulator type. The SI9185DMP-AD-T1-E3 has current and temperature protection, external current sourcing, and ESD protection.

The SI9185DMP-AD-T1-E3 IC is a low quiescent current, low dropout voltage (LDO) linear voltage regulator. Its wide input voltage range of 4.3V to 18V and low dropout voltage of 200mV ensures ideal performance in both low-voltage and high-voltage applications. This IC integrated circuit is designed to regulate output voltages from 0.9V to 18V with output current up to 150mA. It also features fast transient response with a load regulation of 2mV/mA, thermal shutdown protection (TSD), thermal impedance protection (TIP), and a controllable output voltage slope (SOS). The SOS feature enables reducing the output voltage noise band for applications requiring clean transient response.

The SI9185DMP-AD-T1-E3 is suitable for many applications such as LED lighting, automotive applications, consumer electronics, USB power ports, power rails, industrial power supplies and similar portable applications. It is also used in industrial, medical, railway and aerospace applications where cost efficiency, low power consumption and reliability are key design goals. The SI9185DMP-AD-T1-E3 is also used in motor controls, robotics, instrumentation equipment and other power supply applications.

The input voltage to the SI9185DMP-AD-T1-E3 voltage regulator is filtered to suppress any high frequency noise. An internal current limiting circuit is also provided to ensure that the regulator remains within the safe current operating range. The internal over-temperature protection circuit is designed to shut the regulator down if the chip temperature exceeds the specified junction temperature.

The output voltage of the SI9185DMP-AD-T1-E3 voltage regulator is regulated by a feedback loop. This feedback loop is composed of two components: an output reference voltage, and an error amplifier. The reference voltage is compared to the output voltage of the regulator to control the current being drawn from the input until the output voltage reaches the desired value. The error amplifier is then used to compare the input voltage of the power supply to the reference voltage and adjust the current to the output accordingly.

The SI9185DMP-AD-T1-E3 voltage regulator is an ideal solution for low dropout and low quiescent current applications. Its wide input voltage range and low dropout voltage ensure reliable power sequencing and low system noise, while its temperature protection and wide output range of 0.9V to 18V ensure reliable output. This integrated circuit is also protected against electrostatic discharge (ESD), transient overvoltages, and in-rush current surges. Together these features make it a reliable and cost effective solution for many applications.

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