SPX1587T-L/TR

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Introduction

The SPX1587T-L/TR is a linear voltage regulator used in a variety of electronic applications. It is a part of the Power Management IC (PMIC) Voltage Regulators (Linear) family and is designed for both commercial and industrial applications.

Application Field of SPX1587T-L/TR

The SPX1587T-L/TR is primarily used to regulate the output voltage of power supplies, such as AC/DC power adapters. The device is also used in automotive, automotive navigation systems, office equipment and consumer electronics. Additionally, it is used in solar and wind power systems, as well as in LED lighting, digital signage and home automation applications.

The SPX1587T-L/TR is typically used in applications where small board space is required as it only requires four external components: two resistors, one capacitor and one diode. It is also robust, able to withstand up to 50V at its output and can withstand up to 85°C ambient temperature without any input or output deratings.

Working Principle of SPX1587T-L/TR

The SPX1587T-L/TR operates using a linear voltage regulator principle. It has two inputs: a regulated voltage and a reference voltage. The regulated voltage is the power source, such as an AC/DC adapter. The reference voltage is the desired output voltage. The voltage regulator then adjusts the output voltage, depending on the input as well as external components. This regulation function is achieved by the use of a series of MOSFETs to reduce or raise the output voltage.

The voltage regulator also has an internal over-current protection (OCP) circuit. This circuit monitors the total output current of the device and trips when the current reaches a preset limit. This prevents the device from being overloaded and guarantees the maximum output power of the device. The over-current protection circuit also contains thermal overload protection (TOL) to protect from overheating.

Finally, the SPX1587T-L/TR features an input voltage compensation circuit which can adjust the output voltage automatically when the input voltage changes. This ensures that the output voltage remains constant, even when the input voltage varies.

Conclusion

The SPX1587T-L/TR is a linear voltage regulator included in the PMIC Voltage Regulators (Linear) family. It is typically used when small board space is required and is suitable for a variety of applications, including automotive, home automation, LED lighting, industrial and consumer electronics. It also has an internal OCP circuit and an input voltage compensation circuit. With these features, the SPX1587T-L/TR is an excellent choice for regulating the output voltage of power supplies.

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