RT5796CHGJ6

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The RT5796CHGJ6 is a high efficiency, step-down DC-DC converter. It is part of PMIC - Voltage Regulators - DC DC Switching Regulators and it is introduced as a general purpose device for different power supply applications such as driving LED lighting and LCD backlighting, wireless charging solutions, vehicles, and communication systems. This device integrates an ultra-low quiescent current detector, soft-start and adjustable output current limit features to ensure the optimal efficiency for portable applications.

The RT5796CHGJ6 features a wide input voltage range (4.5V to 32V), a wide adjustable output voltage range from 0.8V to 5V and an ultra-low standby current of 25µA. It can support a continuous output current up to 5A and peak current as high as 8A. It utilizes VTR (Variable-Transition Ratio) Control with Spread Spectrum Techniques to optimize efficiency, reduce EMI and achieve fast transient response. The device also has a built-in overvoltage protection circuit that can provide up to 25V of sustained protection.

The RT5796CHGJ6 working principle is based on a synchronous buck topology. It uses an internal high-side and low-side MOSFETs as active switches. When the output voltage is required to be regulated, the device begins by controlling the high-side MOSFETs conductive periods and using cycle-by-cycle current limiting. This feature allows the RT5796CHGJ6 to limit the maximum output current. When the current sensing circuit detects the output current is close to the maximum limit, the device reduces the duty cycle until the output current gets back to the design limit. With this mechanism, the RT5796CHGJ6 can achieve fast line and load transients and high accuracy output voltage regulation.

The RT5796CHGJ6 also comes with several additional features that make it the ideal choice for powering modern digital systems. It incorporates an advanced soft-start circuit that limits the start-up current to reduce the output voltage overshoot and prevent the output voltage spike. The device also features an adjustible output current limit circuit and an adjustable soft-start up ramp. With these features, the RT5796CHGJ6 can support power management systems with adaptive current consumption.

The RT5796CHGJ6 DC-DC converter is designed for applications that require high efficiency and good thermal performance and offers a wide adjustable output voltage range and fast transient response, high accuracy output voltage regulation, low quiescent current, and low power consumption.

The RT5796CHGJ6 is an ideal choice for a variety of applications including driving LED lighting, LCD backlighting, wireless charging solutions, vehicles, and communication systems. It offers a high efficiency, ultra-low quiescent current detector, adjustable output current limit, and soft-start, making it the perfect solution for today\'s demanding power management applications.

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