XC6220B121MR-G

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The XC6220B121MR-G is a general-purpose low-dropout (LDO) linear regulator, which is a type of PMIC (power management integrated circuit). It is designed to deliver voltage regulation with low noise and inherent over-current protection by taking a higher voltage input and regulating it to a lesser output voltage thus providing a stable source of power for a variety of applications. This type of regulator is especially useful for controlling power for digital logic ICs, as well as many consumer devices like smartphones, tablets, and lab equipment.

The XC6220B121MR-G offers several features that make it an excellent choice for a wide range of applications. It is a surface mount device with a 1.2A maximum current rating and an 8-pin configuration that enables it to meet the standards of many equipment manufacturers. It also has an adjustable output voltage range of 0.8V to 5.5V and a dropout voltage of 0.6V, helping to ensure that your supply voltage remains consistently stable. Additionally, the XC6220B121MR-G has a high power supply rejection ratio (PSRR), which helps to improve noise immunity and reduce ripple at the system level.

The XC6220B121MR-G’s primary application is as a DC-DC step-down (buck) converter regulator, which reduces the voltage input from a higher voltage source to a specific vector that complies with the electronics circuitry’s needs. The internal circuitry of the XC6220B121MR-G provides current-limit, short-circuit protection and thermal shutdown features, keeping the system safe from any unexpected power mishaps.

In operation, the XC6220B121MR-G uses a three-terminal configuration in order to control the output voltage of the regulator. The input voltage is applied to the first terminal, while the second terminal is the feedback terminal, which is connected to the output voltage. The last terminal is the ground terminal and it completes the circuit. The voltage present on the feedback terminal is fed to the internal error amplifier, which then compares the output voltage to a reference voltage. If the output voltage drops below the reference, the error amplifier induces higher current through the pass transistor and steps up the output voltage. On the other hand, if the output voltage exceeds the reference, the pass transistor reduces the current, thus reducing the output voltage. This process continues in a loop and helps to maintain the output voltage at a consistent level.

The XC6220B121MR-G is an ideal choice for providing regulated voltage for microcontrollers, microprocessors, LCD displays, consumer electronics, optical modems, and satellite radio tuners. It boasts low external component requirements, is cost-effective, and generates very little noise, making it a suitable device for many applications. Thanks to its small package size and low stand-by current rating, the XC6220B121MR-G can also be used in battery-powered applications.

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