S-1131B43UA-N5CTFG

PMIC - Voltage Regulators - Linear

The S-1131B43UA-N5CTFG, a linear voltage regulator, is an integrated circuit designed to provide a clean and reliable output voltage, both in variable and fixed configurations. As a variable output, the user can adjust the output voltage to fit within a range thereof, while as a fixed output, it maintains a constant output voltage regardless of load changes.

Application Field

The S-1131B43UA-N5CTFG is well-suited for various applications, ranging from consumer applications such as PC server, home and audio/visual equipment to industrial applications such as automotive, communication and medical equipment. It is designed to suit a wide range of input and load conditions, including load currents up to 5A and a regulated output voltage range up to 45V. Some of the applications include:

• PC Servers: The S-1131B43UA-N5CTFG can provide clean and reliable power to the PC server, with high efficiency and low noise.
• Home and A/V Equipment: This regulator can be used in various home and audio/video electronics for battery charging and power supply. Its high efficiency helps reduce energy consumption.
• Automotive Equipment: Its compact size and high reliability makes it suitable for use in automotive equipment, especially in those requiring high current consumption.
• Telecomms: The S-1131B43UA-N5CTFG is ideal for use in telecommunications equipment due to its excellent noise immunity and low ripple.
• Medical Equipment: This regulator is ideal for medical equipment due to its low output noise and high reliability.

Working Principle

The S-1131B43UA-N5CTFG is based on a Linear Regulator topology. It employs an internal error amplifier, gain stage and current limit circuitry to control the output voltage. It gets the reference voltage from an external feedback pin connected to the adjustable pin. The voltage between them is compared with the internal reference voltage and the necessary control signal is generated. Depending on the control signal, the internal circuitry adjusts the output voltage.

In addition, the S-1131B43UA-N5CTFG also features overcurrent protection, soft-start, and over temperature protection. The over current protection functions by limiting the output current to a safe level before the output voltage exceeds the set point. The soft-start limits inrush current at the start-up to help protect the system. Lastly, the over temperature protection prevents the components from being damaged due to excessive temperatures.

The S-1131B43UA-N5CTFG is an excellent choice for a wide range of applications due to its high current output capability, excellent reliability, and high efficiency.