LTC1955EUH#PBF

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The LTC1955EUH#PBF component is an integrated circuit designed for applications requiring powering an electronic device from a single lithium cell with fast charger and multiple low dropout linear regulators. This component combines Linear Tech Corporation\'s high efficiency Very-Low-Dropout (VLDO) linear regulator technology with a highly integrated, single-cell Li-Ion battery charger. It features a charge current up to 1.5A and a wide input voltage range from 3V to 8V. The component also features a minimum total solution size of 16x28mm.

The core working principle of the component lies in its versatile output voltages feature. The available output voltages are selectable and adjustable via two resistors tied to VCC and VIN. This component provides two or four voltage outputs deriving from a single power input. With two resistors and two internal regulators, two output voltages are selectable. If three resistors and four regulators are used, four output voltages are selectable.

The linear regulator output consists of two or four selectable or adjustable voltage sources. These outputs can be set in voltage ranges of 0.50V to 6V with an accuracy of ±1.0% from full scale range. The output impedance is kept low and it is independent of the output voltage.

The battery charger is designed for Li-Ion cell chemistry. Charge current is adjustable up to 1.5A with an accuracy of ±10%. All voltages and currents of the LTC1955EUH#PBF component are monotonic with no current spikes during charging. It has perfect reverse current protection so the current from output to the input never exceeds 10 µA.

The LTC1955EUH#PBF component is a good choice for applications where low power dissipation and Quick Start functions are preferred. Its efficiency is high and its ability to operate at low input voltages makes it applicable for automotive, communication, battery powered equipment and others.

It is an ideal choice for engineers trying to design low power applications with a highly integrated solution, a fast charger and multiple low dropout linear regulators. The LTC1955EUH#PBF component is packaged in a space-saving 16x28mm QFN package that saves both the board space and cost of the end product while providing advanced performance.

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