PMIC - Voltage Regulators - Linear are a type of semiconductor device that provide a steady, constant output voltage despite fluctuations in input voltage or load conditions. These components are essential in electronics for maintaining voltage stability to protect sensitive devices and ensure their proper operation. The main function of linear voltage regulators is to convert a higher, variable input voltage to a fixed, lower output voltage. They are known for their simplicity and low noise output, which makes them particularly useful in noise-sensitive applications like audio and radio frequency circuits. Moreover, these ICs tend to be more affordable and easier to impLEMent than their switched-mode counterparts, making them a go-to choice for many basic power supply needs.
Among the most common applications for linear voltage regulators are powering small, low-power devices like microcontrollers and reference voltage circuits. They are characterized by their straightforward design, minimal external components, and the ability to provide a very clean output with minimal ripples. However, they are less efficient than other types of regulators, particularly at larger voltage differentials, as the excess input voltage is dissipated as heat. This makes them less ideal for high-power applications. Several key manufacturers of PMIC - Voltage Regulators - Linear include Texas Instruments, Analog Devices, Linear Technology, STMicroelectronics, and Infineon Technologies.