LT3990IMSE-5#TRPBF

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The LT3990IMSE-5#TRPBF is a part of the DC DC Switching Regulators family of the PMIC – Voltage Regulators. It is designed to switch between two output voltages, an input voltage and enable voltage, to provide a regulated voltage. The LT3990IMSE-5#TRPBF has a wide range of applications, as it can be used as a multiple output supply, a high-frequency converter and a digital controller power supply.

The LT3990IMSE-5#TRPBF is designed to provide efficient, high-frequency performance that is suitable in a variety of applications. It is capable of delivering up to 5A current, and it can operate at up to 300kHz, ensuring high-precision power conversion. The device features a low quiescent current of 17μA, and a low dropout voltage of 300mV, allowing it to produce high power efficiencies.

Aside from its performance characteristics, the LT3990IMSE-5#TRPBF integrates various protection features, such as overcurrent protected outlets, an overtemperature protection, and overvoltage protection. These features provide safety and reliability for the device and the application it serves.

The working principle of the LT3990IMSE-5#TRPBF is based on the power conversion technique known as Pulse-width Modulation (PWM). This technology entails controlling the on-time of the switching device, which is connected to the input and output terminals, to regulate the output voltage. This technique is very efficient, as it is able to maintain a high power efficiency with relatively low component counts.

The voltage output can be controlled using either a resistor-divider, a digital control port (I2C), or a Programmable Output Voltage Sense Point (OVS) register. This allows for precise optimization of the output voltage. The device also features an adjustable switching frequency, which can be set either internally (250kHz or 300kHz) or externally (0.1kHz to 400kHz). An additional control pin is also provided, facilitating the design of slew-rate limiting and delay-start circuits.

The LT3990IMSE-5#TRPBF is designed to meet the needs of a variety of applications, ranging from supplying microcontrollers, FPGAs and ASICs, to boosting battery power, providing USB power and powering embedded systems. It is available in a 9-pin QFN package, and is characterized by a wide input supply range of 6.5 to 60V. It is an ideal choice for applications in which a low-cost, reliable high-performance switch mode regulator is required.

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