LD2985BM50R

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LD2985BM50R Application Field and Working Principle

LD2985BM50R belongs to the PMIC - Voltage Regulators - Linear category. It is a single, low dropout (LDO) regulator intended to be used in applications where the needs of regulated voltage is up to 5V or less. It has a wide input voltage range of 2.5V to 24V, ability to work in low-noise environment, low quiescent current and good power supply rejection.

The LD2985BM50R is available in fixed and adjustable output versions. The fixed output versions are preset by the manufacturer to provide a wide range of output voltage choices. The adjustable versions can be used to meet the needs of various applications. The LD2985BM50R is packaged in an 8-pin thermally enhanced, surface mount plastic package.

The application field of the LD2985BM50R is quite broad and covers a range of digital and analog consumer electronics, such as mobile phone, digital camera, portable MP3 players, and printer. It is used in such applications as main power supplies, cell phone theriodes and adaptors, charger and battery management systems, RF amplifiers, single-phase and multi-phase DC-DC converters, and DC-AC inverters.

LD2985BM50R is a low quiescent current, high current linear voltage regulator. The device features an internal voltage reference, current limiting and thermal shutdown. It is also equipped with a power-good indication. The LD2985BM50R regulates the output voltage through an error amplifier and an external feedback resistor. The error amplifier compares the voltage at the output and at the feedback pin and applies a corresponding control signal to the pass element. When the output voltage increases, the control signal decreases the voltage between the pass element and the ground, and vice versa. This adjusts the current through the current limiter, thus increasing or decreasing the output voltage to its programmed level.

The LD2985BM50R has an internal current limiter to protect it from over-current conditions, which makes it efficient and reliable in comparison to other regulators. The current limiter is adjusted by the external feedback resistor that sets the output voltage. A power-good flag is also featured in the LD2985BM50R which is used to indicate that the output voltage has reached the specified level. In addition, the LD2985BM50R is equipped with a thermal shut down circuit that protects the device from damage due to over-temperature conditions.

The LD2985BM50R is a low drop out regulator which provides a low external component count, efficiency, low noise performance, and power saving capabilities. Furthermore, the device is able to deliver a maximum output current of 500mA and is capable of operating at high temperature with good thermal performance.

In conclusion, the LD2985BM50R is an excellent voltage regulator that can be used in a variety of applications. It has wide input voltage range, low quiescent current and power supply rejection, and thermal shutdown circuit. The LD2985BM50R has the capability to deliver a maximum output current of 500mA, making it a great choice for applications requiring a stable and reliable voltage supply.

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