S-1131B55UC-N5OTFU

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The S-1131B55UC-N5OTFU is a fully integrated voltage regulator designed to meet the power needs of electronic devices that require precision voltage regulation.

Operating over the input voltage range of 2.5V to 5.5V, the S-1131B55UC-N5OTFU provides up to 500mA of continuous output current at up to 1.5A of peak output current. This voltage regulator provides a low external parts count, providing a high degree of power integration and ease of use.

It features a 4-pin multi-chip package that significantly reduces the number of external components in a power system, resulting in decreased system cost, size, and bill of materials (BOM). The S-1131B55UC-N5OTFU also offers an adjustable voltage from 0.8V to 3.0V, selectable output current of up to 500mA, and adjustable output current of up to specification.

In addition, the S-1131B55UC-N5OTFU provides a variety of features and protection features, making it suitable for a wide range of system applications. These include Reverse, Loop, temperature, UVLO protection, as well as Iq of 85μA at a 1.8V output and 20μA at a 1.0 V output.

The S-1131B55UC-N5OTFU is a linear voltage regulator operated using an error amplifier and a reference voltage source. This regulates the output voltage by comparing the output voltage to an internal voltage reference and making appropriate changes to the output current.

When the output voltage falls below the reference voltage, the error amplifier pulls the output current up and thus the output voltage increases. Conversely, when the output voltage is higher than the reference voltage, the error amplifier reduces the output current and thus the output voltage decreases.

The output current is regulated by varying the duty cycle of the internal switching regulator. When the output voltage is below the reference voltage, the duty cycle is increased, and when the output voltage is higher than the reference voltage, the duty cycle is reduced.

The S-1131B55UC-N5OTFU is ideal for a wide range of application requiring accurate voltage regulation, including notebook PCs, tablet PCs, digital cameras, and other portable applications.

In addition to its excellent regulation performance, the S-1131B55UC-N5OTFU also supports a variety of other features including adjustable output current, low output voltage ripple, fast transient response, overcurrent protection, and thermal protection.

The S-1131B55UC-N5OTFU is a reliable and accurate voltage regulator for use in a variety of applications. It offers a low external parts count and overall system cost, enabling it to be used in cost-sensitive designs.

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