LT3991IMSE#TRPBF

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The LT3991IMSE#TRPBF is a DC-DC switching regulator designed to offer a versatile level of power control for single Li-Ion applications. It provides precise voltage control and high efficiency for portable electronic devices. It can be used to support a wide range of devices from low voltage/high power to high voltage/low power applications.

The DC-DC switching regulator features a maximum switching frequency of 1MHz and uses peak current mode control with a controlled on-time cycle which guarantees precise output voltage regulation. It can be used to generate a fixed output voltage using a built in 5-bit DAC and has external compensation capabilities for more accurate voltage control. In addition, the device offers programmable soft start and fault detection like over current protection and output voltage crowbar protection.

This product can be powered directly from a Li-ion battery. Its active discharge function allows safe removal of charge where needed while the advanced shutdown and reverse charging protection features ensures safety and accurate system operation. The LT3991IMSE#TRPBF also has a PGOOD output which allows the user to monitor the status of their system.

The versatility of the LT3991IMSE#TRPBF makes it a suitable choice for applications in thePMIC - Voltage Regulators - DC DC Switching Regulators space such as power management for mobile products, high efficiency motor drives, and portable measuring devices.

The working principle of the LT3991IMSE#TRPBF is to use a series of switches and controllers to regulate voltage and control current. To begin, an internal 5-bit DAC is used to program the output voltage. Then a selector switch selects the desired mode of operation and a controller applies a current to the inductor which provides energy storage. The controller monitors the output voltage and adjusts the current accordingly. The switch then controls the current, keeping the output voltage constant.

The LT3991IMSE#TRPBF has an integrated top-side power MOSFET which offers lower power dissipation and higher efficiency. The switch also controls an active discharge MOSFET which is used to prevent reverse current, allowing for safe system power supply removal. In addition, the LT3991IMSE#TRPBF offers fault protection like over current protection, output voltage crowbar protection, and over temperature fault protection.

The LT3991IMSE#TRPBF is a suitable choice for applications in the PMIC - Voltage Regulators - DC DC Switching Regulators space due to its versatility, precise output voltage regulation and fault protection. With its high efficiency, low power dissipation, and integrated power MOSFET, this device provides an ideal solution for powering portable electronic devices.

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