L5975D

Voltage - Input (Max):	36V
Supplier Device Package:	8-SO
Package / Case:	--
Mounting Type:	Surface Mount
Operating Temperature:	--
Synchronous Rectifier:	--
Frequency - Switching:	--
Current - Output:	3A
Voltage - Output (Max):	36V
Voltage - Output (Min/Fixed):	--
Series:	--
Voltage - Input (Min):	4V
Number of Outputs:	--
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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Introduction

The L5975D is a DC-DC switching regulator which belongs to the Power Management Integrated Circuits (PMIC). It has a variety of features, such as power management, current protection, voltage regulation, and so on. It is used in a wide range of applications, from low power applications to high power designs. It is also very useful in audio and video applications, where efficient power conversion is essential.

L5975D Application Field and Working Principle

The L5975D is typically used in systems that require efficient power conversion and voltage regulation, such as audio and video applications. It is also often used in motor control applications. The device can be configured to accept an input voltage of up to 30 V, and provide an output voltage that can be adjusted from 0.8V to the input voltage. The L5975D utilizes a switched-mode power supply to convert an input voltage into a regulated output voltage. In this mode, the regulator takes advantage of two transistors: one used as a switch and the other used as an inductor. When the switch is open, the inductor stores energy. When the switch is closed, the stored energy is transferred to the output. This process is repeated a constant rate, creating a regulated output voltage. The L5975D also incorporates several features designed to improve performance and power conversion. It has an internal voltage regulator which allows precise output voltage regulation 100 mV at a time, making it ideal for precise voltage regulation applications. The device also has over temperature and current protection feature, and can be configured to shut down if current limits are exceeded. In addition, the device has a power-good signal, which indicates whether the output voltage is within the acceptable range. The L5975D also has several external components needed for its proper operation. These include input and output capacitors, an inductor, and compensation components. The input capacitor helps to filter out noise from the power source, while the output capacitor acts as a reservoir, storing and releasing energy as needed to keep the output voltage stable. The inductor acts as an inductor and helps to store energy during the switching process, while the compensation components are used to adjust the switching speed and increase efficiency.

Conclusion

The L5975D is a DC-DC switching regulator which belongs to the PMIC category. It is used in a variety of applications which require efficient power conversion and voltage regulation, such as audio and video systems, or motor control applications. It has an internal voltage regulator, over-temperature and over-current protection, and a power-good signal. It also needs external components, such as input and output capacitors, an inductor, and compensation components in order to perform optimally.

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