LX8385-05CDD

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LX8385-05CDD Application Field and Working Principle

The LX8385-05CDD is a 3A low dropout (LDO) linear voltage regulator designed by Linear Technology Corporation (LTC). This device is a fixed output voltage regulator featuring improved transient response and enable terminal for external shutdown control. It is widely used in many fields such as PC peripheral, automation and industrial systems, LCD monitors, game consoles, wireless base stations, and other systems that need high-reliability and low-power solutions.

The general working principle of linear voltage regulator is that a voltage regulator is used to ensure that an input voltage can remain constant, no matter what the output voltage load is. It will work with any load applied to the output, keeping it directly proportional to the input power. It begins with an input voltage (which can be from a variety of sources) and regulates it to a stable output at the desired voltage.

The LX8385-05CDD is a linear voltage regulator that utilizes the voltage difference between the input voltage (VIN) and the output voltage (VOUT) or the dropout voltage (VDROP) to regulate the output voltage. According to the datasheet, it can work in a wide input voltage range of 2.5V to 12V and provide an adjustable output voltage range of 0.8V to 5.0V. The maximum output current it can draw is 3A and the maximum dropout voltage (VDROP) of this device is 0.3V. It also has the capability of providing reverse current protection, thermal shutdown and under-voltage lockout (UVLO). These features make the device ideal for providing regulated power in a wide variety of applications.

The LX8385-05CDD is a very efficient device with a typical efficiency of 90%. The device also has a very low quiescent current (Iq) of 15uA, making it suitable for applications that require low power consumption. In order to maintain its efficiency, the device has an accumulation loop which automatically adjusts the output voltage when the load current is larger than the device’s limiting current. This prevents the device from overheating and provides high reliability and long lifespan.

In summary, the LX8385-05CDD is a 3A linear voltage regulator that provides a wide input voltage range of 2.5V to 12V, adjustable output voltage range of 0.8V to 5V, and a maximum dropout voltage (VDROP) of 0.3V. It also has protection features such as reverse current protection, thermal shutdown, and under-voltage lockout (UVLO). The device is very efficient with a typical efficiency of 90% and its low quiescent current (Iq) of 15uA make it suitable for low-power applications. Compared to other voltage regulators, the LX8385-05CDD offers high reliability and power efficiency, making it a great choice for many applications.

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