L6920DBTR Integrated Circuits (ICs)

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The L6920DBTR is a voltage regulator DC/DC switch, designed to meet the needs of a wide range of power requirements. It is ideal for applications where high efficiency and small size are important. It is a low-cost solution to a variety of high power voltage regulation applications.

Applications

The L6920DBTR is commonly used in power supplies, portable electronic devices and high power data communication systems. It can be used to convert a wide input voltage range into a regulated output voltage with minimal power consumption. It is suitable for low to medium power applications, with current ratings up to 120A.

The device is also used in automotive power supply applications, where it is used to provide high efficiency power conversion for automotive vehicles. It also can be used for robust performance in harsh environments. Other applications include power management in industrial and consumer appliances, as well as for powering specialized devices such as battery chargers, DC/DC converters, and motor controllers.

Features

The L6920DBTR open drain output allows easy connection to the load and the device offers a wide range of switching frequencies up to 4kHz, adjustable via an external clock signal. It also features optional pin configuration, including open drain output and internal voltage scaling, to suit each specific application. The internal voltage scaling allows selection of all device functionality without the need of external components.The device is designed to operate over a wide input voltage range, including both low drop-out and high drop-out regimes. This allows the regulator to provide a stable and reliable output voltage, even when the input voltage is varied by large amounts.

Working Principle

The L6920DBTR is based on a buck converter topology, which uses switching transistors to convert the input voltage into an appropriate output voltage. The internal clock generator periodically switches the converter on and off, thereby regulating the output voltage. The switching frequency is determined by the external clock, which is adjustable over a wide range of frequencies, allowing the output voltage to be varied to meet the needs of the application.

The device also uses internal feedback circuitry, which senses the output voltage and orders the switching frequency to be adjusted so that the output voltage remains constant at the selected output level. The device also has an enable pin, which allows the user to enable or disable the device as required.

The device also includes a built-in current and voltage limit circuit, which monitors the output current and voltage and limits the output voltage or current when it exceeds the specified maximum. This helps to ensure that the output voltage and current remain within their specified safe operating limits, even in the event of an over-voltage or over-current situation.

The L6920DBTR is a robust, low cost device that provides efficient and reliable regulation of output voltage, allowing a wide range of applications to benefit from using it. It offers excellent power switching performance, low output voltage ripple and high efficiency, making it an ideal solution for high power voltage regulation applications.

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