MIC261203-ZAYJL-TR

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The MIC261203-ZAYJL-TR is a member of the DC/DC Switching Regulator family of voltage regulators produced by Micrel Semiconductor. The device is a triple-output Buck-type DC/DC controller with variable output current that is designed to provide precise regulated output voltages. It is capable of up to 3V output at 1A with adjustable voltage and current settings and an adjustable switching frequency from 400kHz to 1.2MHz.

The MIC261203-ZAYJL-TR is suitable for a variety of applications in the industrial, automotive, and consumer market, such as portable and battery-powered devices, embedded systems, and general DC/DC power supply applications. Additionally, the device is highly efficient when operated in a variable-frequency PWM mode, providing up to 96% efficiency when operating in a typical application.

Working Principle

The device utilizes a separate oscillator, switching regulator, and synchronous rectifier circuit to provide the required power output. The oscillator frequency is adjustable and is used to drive the switching regulator, which regulates the current in the output lines to provide a regulated and precise output voltage. The synchronous rectifier circuit then provides a short low-impedance path for the current, allowing for efficient operation, and the current limit circuits provide a maximum current limit for each output line to prevent overloading of the device.

The device can be used in either burst-mode or fixed-frequency operation, and includes a power-saving shutdown control to further reduce power consumption when the device is not being used. The device also supports external synchronization, enabling multiple devices to be synchronized for improved performance and higher power efficiency. Additionally, the device includes a built-in over-temperature protection to prevent damage to the device due to excessive temperature.

Benefits

The MIC261203-ZAYJL-TR provides several important benefits in terms of its application areas, such as its adjustable current and voltage settings, high efficiency, and power-saving shutdown control. The adjustable output current limit ensures safe operation and prevents overload, while the adjustable output voltage ensures that the required voltage output is met. The power-saving shutdown circuit reduces power consumption while the device is not in use, and the synchronous rectifier circuit provides a low impedance path for the current, increasing efficiency even further. Additionally, the high-efficiency PWM mode enables high-efficiency operation, up to 96%.

Conclusion

In conclusion, the MIC261203-ZAYJL-TR product from Micrel Semiconductor is an excellent choice for a wide variety of applications. Its adjustable current and voltage settings, high efficiency, and power-saving shutdown control make it an ideal choice for many applications, especially in the industrial, automotive, and consumer markets. Its adjustable oscillator frequency and synchronous rectifier circuit also make it highly efficient, providing up to 96% efficiency when operating in a typical application.

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