LT3645IMSE#TRPBF

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The LT3645IMSE#TRPBF is an integrated power management IC (PMIC) used to efficiently provide power to multiple systems and devices from a single power source. It consists of two DC-DC step-down converters and one LDO voltage regulator. The step-down converters are configured as a synchronous buck regulator and a linear regulator, respectively. The LDO is a variable output, linear regulator.

The LT3645IMSE#TRPBF is classified under the PMIC – Voltage Regulators – Linear + Switching category as it uses both linear and switching technologies. It is suitable for a variety of applications, including single cell Lithium-Ion battery powered portable applications, power supplies for system-on-chip (SoC) solution and notebooks.

The power management of LT3645IMSE#TRPBF Step Down Regulator can be divided into two sections – the switching regulator and linear regulator. The switching regulator section contains two DC-DC step-down converters – synchronous buck regulator and linear regulator. The synchronous buck regulator is responsible for providing high output current and high efficiency, while the linear regulator is responsible for providing low ripple and low noise.

The switching regulator consists of a built-in power MOSFET, controller and inductor. The voltage is stepped down to a lower level by the synchronous buck regulator and the output current is controlled by the built-in MOSFET. The switching frequency can be adjusted through the use of external capacitors, to optimize power consumption and performance.

The linear regulator is designed to provide low output current and low noise. It is capable of regulating input voltage from 2.5V to 15V, making it suitable for a wide range of applications. It is also equipped with series MOSFETs to regulate output voltage. The MOSFETs are designed to minimize noise and ripple.

The LDO regulator has two control pins for setting the output voltage. The output voltage is adjustable in 400mV increments from 1.2V to 5.25V. It is protected from over-voltage, under-voltage and thermal overload. The LDO also includes an enable pin which can be used to turn it off and save power.

The LT3645IMSE#TRPBF power management IC is a highly integrated device and offers an efficient solution for powering multiple systems and devices from a single power source. It is suitable for a variety of applications, including, single cell Lithium-Ion battery powered portable applications, power supplies for system-on-chip (SoC) solution and notebooks. It includes two DC-DC step-down converters, a linear regulator and an LDO voltage regulator.

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