LD39150DT18-R

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The LD39150DT18-R is a low-dropout linear voltage regulator designed for applications in automotive, industrial, and embedded systems. It is an ideal solution for situations where an extra-low output voltage drop is greatly desired, and it offers a high degree of output accuracy and excellent load/line transients. The device operates from a 6V―18V input and provides a precision output voltage of 1.8V with a maximum current of 150mA.

The LD39150DT18-R features an ultra-low dropout voltage that enables it to maintain its output voltage even when the input voltage is within 0.2V of the output voltage. It also features excellent line/load transient response, with up to 10dB PSRR over 2MHz—allowing it to maintain its output voltage despite variations in input voltage. In addition, the device provides tight output voltage accuracy of ±2.5%, ensuring that the output voltage is precisely regulated.

The LD39150DT18-R is exceptionally easy to use and operate, with an on/off enable pin that can be used to quickly enable or disable the device. The device can also be put into an ultra-low power mode when idle, significantly reducing its power dissipation. In addition, the LD39150DT18-R features a thermal-shutdown protection that automatically shuts the device down when it reaches a predetermined temperature, preventing it from overheating and drastically prolonging its life.

The LD39150DT18-R is built around a traditional voltage regulator topology. The input voltage is first applied to a filter circuit, which reduces the level of ripple on the input voltage. The filtered input voltage is then applied to a series pass element, which regulates the output voltage by varying the current through it. A feedback circuit is connected to the output of the regulator, and monitors the output voltage; if it is not within the specified range, the circuit will adjust the pass element to regulate the output voltage. In addition, the voltage regulator incorporates a load switch, which disconnects the load from the regulator when a fault is detected, protecting the device from overcurrent conditions.

In summary, the LD39150DT18-R voltage regulator is an ideal solution for applications that require an extra-low dropout voltage and excellent line/load transient response. Its features include an on/off enable pin, ultra-low power operation, thermal-shutdown protection, and tight output voltage accuracy. Thanks to its simple, traditional voltage regulator topology, the LD39150DT18-R is easy to use and operate, making it an ideal choice for applications in the automotive, industrial, and embedded sectors.

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