L4957AD1.8

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L4957AD1.8 is a linear voltage stabilizer integrated circuit (IC) of PMIC - Voltage Regulators - Linear classification, developed by STMicroelectronics, which is commonly used to supply various electronic components and systems with a stable and accurate voltage source.

The working principle of L4957AD1.8 is relatively simple. It consists of multiple terminals, several of which are dedicated to input, output and GND. The power supply of L4957AD1.8 is based on an input voltage from a maximum of 20V and the delivery of this voltage is regulated by including the linear integrated circuit in the form of a series regulator. The current taken from the output terminal goes through a field effect transistor (FET) that is connected to the IC in its input. This current is then regulated and stabilized by L4957AD1.8, thus ensuring that it has the same nominal value at the output terminal.

The field application of L4957AD1.8 is wide, as this IC is a highly reliable and efficient voltage regulator. In terms of its application, the most common is to regulate the voltage of electronic components such as microprocessors, volatile memory, logic module and other electronic circuits, among others.

In addition, the L4957AD1.8 is also applicable to a range of hardware devices such as computers and other types of hardware, including laptops, personal digital assistances (PDA’s), handheld games and telecommunications equipment. It is also widely used in automotive and industrial applications, in which its stability and reliability are essential.

The L4957AD1.8 is a high performance linear voltage notch with on-chip adjustable current-limit protection, which can sense output current up to ±6A. When used outside of its operating limits in high ambient temperature conditions, the IC provides an additional current limit signal that allows the device to limit the output current. This signal can be adjusted according to the user’s requirements. The device also has a soft start function, which prevents excessive current or inrush during device start-up.

Overall, L4957AD1.8 is a linear voltage regulator IC of PMIC - Voltage Regulators - Linear classification, which is widely used for reliable voltage regulation in applications like computers, industrial systems and automotive electronics. Its working principle is relatively simple and the IC has some features like on-chip adjustable current-limit protection, soft start protection, and over-temperature protection, among others. Given its features, the L4957AD1.8 is a highly efficient and reliable voltage regulator.

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