LT8301HS5#TRMPBF

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The LT8301HS5#TRMPBF is a current-mode Step-Down DC-DC switching regulator with integrated power switches, ideal for use in all types of DC-DC power supply applications. This device is specifically designed to provide the highest level of power efficiency and the lowest level of heat dissipation in a compact, space-saving package. The device is capable of delivering up to 4A at an output voltage of 0.7V up to 5V.

This device is perfect for a wide range of applications including solutions for battery powered devices (such as mobile phones, tablets, and cameras), point-of-load regulation, communications, and FPGA/ASIC power regulation. With its low dropout feature and low ground pin current, it is also ideal for automotive applications.

The LT8301HS5#TRMPBF features a wide input voltage range from 2.25V to 5.5V and an operating temperature range from -40°C to 85°C, making it suitable for various harsh environments. It supports both positive and negative output voltage with an adjustable output voltage ranging from 0.8V to 5V, suitable for applications that require a wide range of output voltage.

The LT8301HS5#TRMPBF is configured using the Easy-to-UseRegulator Design (EURD) methodology, which allows for circuit optimization through modifications to parameters such as the output voltage and current limit. This helps speed up design and implementation process and provides higher flexibility.

Working Principle

The LT8301HS5#TRMPBF uses a current-mode switching architecture to efficiently convert an input voltage to a regulated output voltage. The device is integrated with a power switch, MOSFET for power management, and an internal voltage reference, making it suitable for applications with low component count requirements. It is also capable of delivering high energy efficiencies, even at light loads.

The device works by regulating an output voltage at an optimal level while also providing a stable, fixed output voltage. The LT8301HS5#TRMPBF utilizes a current-mode control loop which works by monitoring the voltage level of the output and adjusting the duty cycle of the power switch to make sure that the output voltage stays within the desired range. The output is regulated by the internal oscillator which is optimized with a hysteretic voltage reference. It also features fixed-frequency mode switching and can be configured for higher frequencies if needed.

The LT8301HS5#TRMPBF also features a low quiescent current, making it highly power efficient even at light loads. Additionally, it includes an adjustable soft-start, an overtemperature reset feature, an undervoltage lockout, and a programmable operating frequency for more flexibility.

Conclusion

The LT8301HS5#TRMPBF is a current-mode step-down DC-DC switching regulator with integrated power switches, designed with high power efficiency and low heat dissipation. This device is suitable for various applications including battery powered devices, point-of-load regulation, communications, and FPGA/ASIC power regulation. The device offers a wide input voltage range, low quiescent current, and adjustable soft-start control. With its current-mode control loop and hysteretic voltage reference, this device offers excellent performance and reliability.

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