L4987CPT50TR

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L4987CPT50TR is a linear voltage regulator device designed and manufactured by STMicroelectronics and belongs to the PMIC (Power Management IC) family. It is a Verified Design Regulator that serves as a replacement solution for regulators such as the 7805 and 78.05T in many applications. Its primary purpose is to regulate a desired DC voltage by receiving an AC or DC input supply.

The L4987CPT50TR offers superior performance over the traditional 7805 and 78.05T regulators. It has an ultra-low quiescent power consumption of 90µA with 0V Output. It has an advanced pulse-width-modulation (PWM) control mode system that provides stable and robust output performance in the presence of large transients, avoiding surges on the output. It has a wide input range with dual outputs from -37V to 6V, which enables it to be used in an array of applications. The device also features an adjustable output voltage for low voltage drops as well as a wide temperature range of -40°C to +125°C, enabling it to operate in extreme conditions.

The operating principle of the L4987CPT50TR is based on voltage regulation, which is the process of regulating a desired DC voltage by receiving an input of AC or DC current. It is achieved by comparing the output voltage to an internal reference voltage and making the necessary adjustments to keep the output voltage within preset limits. To accomplish this, the L4987CPT50TR uses its internal PWM control system to ensure the desired output voltage is maintained within its specified limits, despite fluctuations to its input voltage. This PWM system is designed to adjust the output voltage in response to varying input supply voltages, thus achieving regulation.

The L4987CPT50TR is best used in low-power applications such as automotive, industrial, and consumer applications. In the automotive sector, it is used in applications that require low power switching and dimming, such as LED lighting control, power management, and power supply regulation. Its wide temperature range coupled with low power consumption make it a great choice for outdoor applications that require operating in harsh temperature conditions. The device is also well-suited for industrial applications since its wide input range enables it to be used in a variety of power supply configurations, as well as its low-noise and low-ripple outputs.

In conclusion, the L4987CPT50TR is an ideal choice for those looking for a regulated voltage device that is reliable and efficient. Its wide input range and advanced PWM control system make it suitable for a variety of applications, from automotive to industrial and consumer markets. Its adjustable output voltage and wide temperature range also make it a great choice for outdoor applications. As such, it provides an effective solution to many low-power applications that require a regulated DC voltage supply.

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