LT3990IMSE#TRPBF

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The LT3990IMSE#TRPBF is a DC-DC switching regulator and a type of Integrated Power Management IC (PMIC) that is commonly used in a variety of applications. The device offers excellent efficiency, high power and low noise. It is an ideal choice for many power-supply designs.

The device integrates a high-frequency, fixed-frequency current-mode synchronous buck regulator, with adjustable operating frequency and internal compensation. This allows for high-efficiency and high-current power supply operations. The synchronous rectifier has lower current ripple than traditional rectifier-based designs. The output voltage can be adjusted externally using two external resistors to control the feedback loop which sets the output voltage. The device also features a low-noise switching frequency, low quiescent current, and low-frequency spread spectrum, reducing EMI and input power losses. The device can operate at a switching frequency of up to 5MHz, allowing for a very fast transient response and excellent dynamic load performance.

The device has various operating modes that enable it to achieve a wide range of applications. In PFM (power-factor-modulation) mode, high switching efficiency is achieved by reducing quiescent current through pulse-skipping during light load conditions. In PFM+ mode, each switching cycle has at least one switch on time, giving better regulation compared to PFM mode. In PWM (pulse-width-modulation) mode, the switching frequency is constant and the duty-cycle is changed to maintain regulation. This operating mode is best used for heavier loads with steady-state currents.

The LT3990IMSE#TRPBF also features a number of other features that make it an ideal solution for a wide range of applications. It has an accurate current limit with 2A peak current limit over-temperature protection. This can help prevent output voltage drops due to over-currents. There is also an input UVLO (under-voltage-lock-out) protection, preventing the device from operating on input voltages lower than the set level. Additionally, the device also has a maximum duty cycle limit of 85%, thus preventing the output voltage from rising above the reference voltage. The device also includes a power-good indicator, status pin, and shutdown pin.

The LT3990IMSE#TRPBF also has a wide range of applications. It can be used in a variety of projects such as servers and computing products, AC/DC adaptors, automotive infotainment systems, graphical processors and motor drive controllers. Additionally, it can also be used in a number of other projects such as solar power supplies, 3D printers and robotics.

In conclusion, the LT3990IMSE#TRPBF is an excellent choice for a number of power-supply designs. It offers a number of features and provides excellent efficiency, high power, and low noise. By taking advantage of its range of operating modes, as well as its other features, designs can make full use of the device and its capabilities. Therefore, in applications where power-supply efficiency and reliable performance is required, the LT3990IMSE#TRPBF is an ideal solution.

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