LX1882-33CDM

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Introduction

The LX1882-33CDM is a DC/DC switching regulator that provides low voltage output regulation with high efficiency. The high efficiency of the regulator comes from its synchronous rectification architecture, allowing it to operate at very low switching loss and no extra power consumption. The LX1882-33CDM is ideal for a wide variety of applications, from 1.2V to 5V output levels and up to 3A of output current. This device is highly configurable, giving users the freedom to tailor the device for their specific requirements.

Application Field

The LX1882-33CDM is suitable for many consumer, industrial and medical applications. Its wide input voltage range from 3.3V to 70V, makes it an ideal choice for applications where power supplies or batteries must step down from out-of-range voltages. The large input voltage range also provides improved transient response, allowing the device to handle load changes without the need for external components. The built-in over-temperature protection, over-current protection and input under-voltage lockout help protect your system in the event of any fault or overload conditions.

The LX1882-33CDM is an ideal choice for automotive applications, where battery voltages can range widely. The regulated output voltage can be set with an external voltage divider. This allows the device to provide precise power even when operating on a wide input voltage range. The high efficiency of the device can also help extend battery life in the typical start-stop conditions associated with automotive use.

The LX1882-33CDM can also be used in industrial applications, such as in solar panel arrays, machine tool controllers, embedded systems, and more. The high efficiency of this device makes it an ideal choice for applications such as machine tools, where a steady supply of power is required. The built-in switch protections also ensure that the system is protected from any fault conditions.

Working Principle

The LX1882-33CDM works on the principles of synchronous rectification, which uses two switches to control the output current. The switches are connected in series, so when one switch is on, the other is off. This performs the rectification (conversion of AC to DC) and provides the regulation. The output voltage of the device is set using an external voltage divider. The LX1882-33CDM can also be configured to provide a fixed or adjustable output voltage. When the device is operating, it senses the voltage and adjusts the current accordingly. The LX1882-33CDM also includes a frequency-setting circuit so that the frequency of the output voltage can be adjusted to suit the application.

The LX1882-33CDM includes a thermal shut-down circuit which monitors the temperature of the device and turns it off when it exceeds a certain limit. This ensures that the device does not overheat due to an overload condition. The device also includes soft-start protection which prevents the device from excessive current draw at start-up. The LX1882-33CDM can also be configured for current-limited operation if required.

The LX1882-33CDM is designed to be easy to use and configure. The device is fully programmable through an I2C interface and can be programmed to provide a wide variety of output voltages and currents. The device also includes a comprehensive collection of monitoring and protection functions which help ensure reliable operation.

Conclusion

The LX1882-33CDM is a robust, high efficiency DC/DC switching regulator suitable for a wide variety of consumer, industrial and medical applications. Its wide input voltage range and configurable features make it an ideal choice for many applications, including automotive, solar, machine tool and embedded systems. The device includes protection features to ensure reliable operation and is easy to set up and configure. By following the principles of synchronous rectification, the LX1882-33CDM provides high efficiency and low switching loss.

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