LTC3808EGN#PBF

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The Voltage Regulators DC DC Switching Controllers application field plays a very important role in many power management processes. In this article, we will be going over one of them, which is the LTC3808EGN#PBF specifically. We will discuss the features of this device, its application field and its working principle.

Features of LTC3808EGN#PBF

The LTC3808EGN#PBF is a high performance DC to DC switching controller designed for applications requiring high efficiency, low voltage drop and low output noise levels. It offers three versatile switching options: boost, SEPIC and buck-boost, with power capability up to 3A. This device also has several safety features, such as latching current limit, thermal regulation and external current setting. It has a wide input voltage range of 4.5V to 75V, adjustable output voltage from 0.8V to 40V and a switching frequency of up to 500kHz.

Application Field

The LTC3808EGN#PBF is used in many applications where high efficiency, low voltage drop, low noise and high accuracy are desired. Its wide input voltage range, adjustable output voltage and fast switching frequency make it suitable for applications such as telecommunications, automotive, consumer electronics and computer systems, as well as portable and industrial applications. It is also used to regulate power on microcontroller and logic circuits, as well as in embedded systems and motor drives.

Working Principle

The LTC3808EGN#PBF’s working principle is based on a hysteretic control method. The output voltage is determined by an internal reference voltage and two external resistors. The current through the external resistors adjusts the output voltage according to the required level. As the load current increases, the voltage across the current sense resistor decreases, which causes the voltage reference to rise proportionally. Once the voltage reference reaches the internal threshold, the controller will switch off the output transistor. As the load current drops, the internal reference voltage decreases, which is used as a trigger for the controller to switch on the output transistor. This loop will repeats

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