SI9182DH-33-T1-E3

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The SI9182DH-33-T1-E3 is a three terminal positive adjustable voltage regulator that belongs to the Linear series of Programmable Voltage Regulators (PMIC). It is designed to provide an output voltage of up to 33V that is adjustable from 1.15V to 25V. This make it an ideal choice for battery charging, portable device power applications, and many other kinds of low voltage and low power circuits.

The SI9182DH-33-T1-E3 is a low dropout (LDO) adjustable voltage regulator because its output voltage is regulated independently of the input voltage. This simply means that it can maintain the output voltage even if the input voltage varies. Its small size and low quiescent current make it well suited for portable applications. There is also a wide temperature operating range of -40°C to +125°C, making it suitable for a variety of applications.

The SI9182DH-33-T1-E3 features an on chip reference voltage of 0.2V above the output voltage, which helps to minimize the dropout voltage. It also uses an external reference resistors (R1 and R2) to adjust the output voltage. These can be changed to adjust the output voltage from 1.15V to 33V. Furthermore, the SI9182DH-33-T1-E3 has an over temperature protection which shuts of the output if it goes above 125°C. It also has no minimum load current requirement.

The working principle of the SI9182DH-33-T1-E3 is fairly straightforward. It consists of a power semiconductor (usually a transistor or FET) and a reference voltage that is used to compare the output voltage with the reference voltage. When the output voltage starts to deviate from the reference voltage, the power semiconductor will switch and cause current to flow to or from the voltage regulator. This will cause the output voltage to rise or fall, depending on the direction of the current flow. The reference voltage is kept stable by the internal circuitry of the voltage regulator, so that the output voltage remains as close to the reference voltage as possible.

The SI9182DH-33-T1-E3 is an ideal solution for applications that require an adjustable voltage regulator with low noise, low quiescent current, and robust regulation. Its adjustable output voltage allows for greater flexibility, and its small size makes it easy to integrate into any type of design. It is suitable for use in low power, low voltage power supply designs, battery charging applications, portable device power applications and more.

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