LT8390AHFE#TRPBF

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Introduction

The LT8390AHFE#TRPBF is a synchronous buck regulator DC-DC controller which offers high efficient, low ripple, and reliable performance in a tiny, low profile surface mount package. This part is designed for a wide input voltage range and has a wide output voltage range. It is also designed with low noise operation, adjustable switching frequency and integrated low on-resistance (RDS) MOSFET drivers.

Features

The LT8390AHFE#TRPBF has a wide input voltage range of 4.75V to 12V, a wide output voltage range of 1.2V to 5.5V, and a low output ripple of 50mV. It has a peak current mode control architecture that ensures optimal load transient response and stable operation over a wide range of load and input conditions. It also has an adjustable switching frequency of 200kHz to 4MHz, integrated low on-resistance MOSFET drivers, and an adjustable soft-start feature.

Application Areas

The LT8390AHFE#TRPBF is well suited for many applications, including computing, consumer electronics, automotive, industrial, and medical. It is well suited for applications such as notebook PCs, servers, desktop and enterprise computing, MP3 players and cell phones, video gaming consoles and TVs. In automotive, it is ideal for applications such as vehicle instrumentation, body control electronics, and motor control systems. In industrial, the part is suitable for factory automation, solar modules, and battery-powered equipment. Additionally, it can be used in medical equipment, such as heart monitoring systems and patient care equipment.

Working Principle

The LT8390AHFE#TRPBF creates an accurate DC signal from an input or supply signal that is too large or small. The device switches the supply voltage at a frequency determined by the output voltage. This process is energy efficient, as it sends limited amounts of current through the circuit, reducing the need to dissipate energy as heat. The device is controlled by the input voltage and sensing the voltage at the output, which maintains the desired output by adjusting the on-time of the switching control circuit.

Benefits

The LT8390AHFE#TRPBF provides numerous advantages in applications, including high efficiency, low noise, low output ripple, and low on-resistance. The high efficiency is attributed to its peak current mode control architecture and its switching frequency. The low on-resistance ensures low power loss and helps to reduce thermal stress from high currents. The low noise operation is attributable to the low switching frequency, which minimizes power supply noise and radiated emissions. Additionally, the low output ripple ensures the device\'s output voltage is always stable.

Conclusion

The LT8390AHFE#TRPBF is a high efficient, reliable controller for DC-DC converters with wide input and output voltage ranges and low on-resistance. It is suitable for a variety of applications in computing, consumer electronics, medical, and automotive. Its peak current mode control architecture ensures optimal load transient response and low noise operation. Furthermore, its low output ripple provides a stable output voltage and the adjustable switching frequency allows for precise power regulation.

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