LT3957AIUHE#PBF

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LT3957AIUHE#PBF is a PMIC (Power Management Integrated Circuit) voltage regulator DC-DC converter coating with operating temperature range of -40 to 85 °C. It is an ideal power solution suitable for cost sensitive applications, including POE (Power over Ethernet).

LT3957AIUHE#PBF is a DC-DC switching regulator which supports wide input voltages from 2.5V to 5.5V and output voltage is able to adjustable from 0.6V to 5.4V. It provides a peak current of 1.5A. It is housed in a SOT-23-6 or SOT-23-5 packages, with a typical efficiency of over 95 %. It is able to provides high power conversion efficiency, adjustable peak current limiter, wide input voltage range and integrated Schottky diode.

In order to applied the application field and working principle of LT3957AIUHE#PBF, the base regarding its application can be divided into two application fields, which are automotive and industrial. For the automotive application, LT3957AIUHE#PBF DC-DC converter are able to use for automotive systems, such as lighting system, or vehicle charging systems, etc. For the industrial application, LT3957AIUHE#PBF DC-DC converter are able to use for printing systems, medical systems, communications equipment, remote monitoring, as well as many more other industrial applications.

Regarding to its working principle, LT3957AIUHE#PBF DC-DC converter has two phase operation, which is step-up phase and step-down phase.In the step-up phase, it will convert the input voltage to increase the output voltage. The output voltage range is adjustable through a control pin known as FB pin. The input voltage could be range from 2.5V to 5.5V. Besides, the controller can also detect the output voltage level and adjusts the pulse width accordingly. In the step-down phase, it will convert the input voltage to decrease the output voltage. The output voltage range is adjustable as well via a control pin as Vref pin. The controller can also detect the output voltage level and adjusts the pulse width accordingly for the best efficiency.

In conclusion, LT3957AIUHE#PBF is a DC-DC switching regulator designed for cost sensitive application. It has two application fields which are automotive and industrial. In the working principle, it has two phases which are step-up and step-down phase and the controller will adjust the pulse width accordingly for the best efficiency.

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