LT3990HMSE-5#PBF

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LT3990HMSE-5#PBF is a high-performance switching regulator in the voltage regulator family of DC DC power management systems. It is designed to provide a wide variety of features to aid in the design of power supplies.

The LT3990HMSE-5#PBF is a dual-channel synchronous voltage regulator that provides 1.8 A of continuous output current from each channel. The two channels can be separately set to different output voltages, allowing the LT3990HMSE-5#PBF to be used as either a buck-boost regulator or a power splitter. The device also supports wide input and output voltage ranges, making it suitable for applications requiring both high and low voltages.

The LT3990HMSE-5#PBF features efficient and stable regulation regardless of ambient temperature, operating voltage, or load current. This is due to its emulated peak current-mode (EPCM) and pulse frequency modulation (PFM) control schemes, which allow a more accurate output voltage regulation. In addition, the EPCM and PFM control schemes make the LT3990HMSE-5#PBF suitable for compact, low power, space-efficient designs.

The LT3990HMSE-5#PBF also features built-in UVLO (Under Voltage Lock-Out) protection for enhanced durability and reliability over the long term. Other features such as over current protection, short circuit protection, and over voltage protection make the LT3990HMSE-5#PBF the ideal choice for complex and demanding applications.

As far as the working principle of LT3990HMSE-5#PBF voltage regulator is concerned, it works by modulating an oscillator with a fixed frequency and duty cycle. The oscillator controls an internal switch which is connected to the output voltage. When the switch is ON, current is delivered to the output voltage while a rectifier is enabled to prevent current flow back to the input. When the switch is OFF, the current to the output is cut off while the rectifier allows the inductor to discharge this stored energy to the output voltage. By modulating the duty cycle of the oscillator, the voltage regulator can maintain a steady output voltage regardless of fluctuations in input current or load.

The LT3990HMSE-5#PBF voltage regulator can be used for applications such as high power servers, telecommunications, automotive, and industrial systems. It is ideal for applications that require efficient power conversion and is also suitable for use in designs that demand precision voltage regulation.

In conclusion, the LT3990HMSE-5#PBF voltage regulator is a high-performance switching regulator ideal for use in power management systems. Its dual synchronous channels make it suitable for power splitting and buck-boost applications. It features a wide range of features such as UVLO, EPCM and PFM control schemes, and over current and short circuit protection. These make the LT3990HMSE-5#PBF the perfect solution for demanding and complex applications.

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