XB1117P331FR-G

XB1117P331FR-G is a range of adjustable positive voltage linear regulator ICs. The voltage can be adjusted from 1.25V to 32V. It is also capable of providing output current up to 1.6A.

The XB1117P331FR-G is designed to minimize power dissipation and regulate high current with low external components. It features an on-chip overload protection, output current limit protection, thermal shutdown, and high voltage start-up. The device is also equipped with a low quiescent current to improve battery life.

Application fields include mobile USB related products, automotive electronics, battery powered systems, and medical systems. It can be used to provide power supply for microcontrollers, FPGAs, memories, as well as other IOT related products.

The XB1117P331FR-G linear regulator works by comparing an adjustable internal reference voltage to a feedback signal; this feedback signal can be either from an external resistor divider, or from the regulator’s output pin. The difference between these two voltages is used to drive a sense FET, which controls the current flowing through the output of the regulator. The result is a regulated output voltage, equal to the reference voltage minus a small drop of voltage due to the sense FET.

The XB1117P331FR-G’s most prominent feature is its internal high-precision voltage reference of 1.25V. This reference voltage is used to accurately regulate the output voltage, regardless of the variations in input voltage, load current or temperature variations.

The device is also equipped with integrated under-voltage lockout (UVLO) and over-temperature protection (OTP). UVLO guards the device from over-discharge conditions, while OTP keeps the regulator from outputting excessive current and avoids possibility of thermal runaway. Both provide maximum system protection and help ensure long term reliability.

The XB1117P331FR-G is a high-performance linear voltage regulator with low external component count. It is ideal for applications where high current low noise operation, excellent load regulation and accurate output voltage are needed.