LD3985J25R

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The LD3985J25R is a linear voltage regulator from STMicroelectronics, specifically designed for applications with low voltage source and frequent charge/discharge cycles. It has a low dropout voltage and low input-output differential, making it suitable for powering mobile applications that require accurate and stable voltages. Its wide input voltage range ensures compatibility with multiple voltage sources, and its fast transient response time allows for efficient and reliable power supply.

The LD3985J25R belongs to the class of traditional linear regulators, which use feedback control to maintain a constant output voltage. It consists of an input voltage source, a series pass element, a voltage reference, a comparator and a current source. The input voltage is regulated by the series element, which is an electronically-controlled switch. The pass element is connected between the input and output voltages, and is used to reduce or increase the amount of current that can flow through the circuit. The voltage reference is used to set the desired output voltage. The current source is used to maintain the pass element in either a closed or open state. The comparator compares the output voltage to the voltage reference and triggers the current source whenever the output voltage is not equal to the reference. This causes the pass element to change its state until the output voltage is the same as the reference voltage.

The LD3985J25R is suitable for a wide range of applications including computers, telecommunication equipment, automotive, and portable electronic applications. Its low power dissipation allows for efficient and reliable operation, even in high temperature environments. It also offers protection against overvoltage and is capable of providing up to 9A of continuous current. The LD3985J25R is pin compatible with other standard low dropout voltage regulators, making it suitable for use in existing designs.

The LD3985J25R is an excellent choice for applications requiring accuracy, reliability and efficiency when it comes to power management. It offers a wide input voltage range, low dropout voltage and accurate output voltage control. It is capable of providing up to 9A of continuous current, and its low power dissipation and slew rate enable it to operate even in high temperature environments. Thus, the LD3985J25R is an ideal solution for a variety of demanding applications.

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