MAX821LUS+T

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Introduction: MAX821LUS+T is an integrated power management integrated circuit (PMIC), classified as a Supervisors IC, with the purpose of protecting power supplies in audio, video and other applications, such as amplifiers, loudspeakers, computers, or any other device requiring power.  Maxim Integrated, a global leader in design, manufacturing and traffic of the world, is the supplier of this IC. The major application field of MAX821LUS+T is as follows.

Application Field: The MAX821LUS+T have wide range of application field mainly suitable for audio, video and mobile device applications, power supplies, multi-channel data transmission, power monitoring and cell phones. MAX821LUS+T is specifically designed to provide the solution for protecting low voltage power supplies from the effects of overcurrent, overvoltage, excessive loading, temperature, and other external occurrences. It also helps to monitor the power level and make sure to maintain the overall power stability. By maximize the capability for system loading, this integrated circuit increases the power efficiency.

Working Principle: The system of MAX821LUS+T consists of two distinct parts, the Supervisor itself and a Load switch. The supervisor - a low voltage voltage detection circuit with current-limit circuit, monitor the supply voltage level, and allow power through only when the voltage is above a certain threshold level. On the other side, the Load switch follows the supervisor\'s command,  It uses an N-channel MOSFET to control the flow of power, and uses the N-channel open drain feature to turn off the power when the voltage is above the threshold. The supervisor and the load switch work together to protect the system from overcurrent, overvoltage, and excessive loading as well as temperature protection.  In summary, the MAX821LUS+T is an integrated PMIC that provides a complete solution for protecting low voltage power supplies from the effects of overcurrent, overvoltage, excessive loading, temperature, and other external occurrences.

Advantages: The MAX821LUS+T has many advantageous features. It provides a two-part protection system designed to reduce the amount of power consumed by the system and to protect the system from overloading. The supervisor portion of the integrated circuit, provides the capability to detect input power level, and Cut-off the power supply when the input power reaches a certain threshold, thereby preventing overvoltage and current overloading. Moreover, the load switch is able to monitor the voltage level and switch off the power according to the supervisor’s instruction, while maintaining the power stability. The power saving feature is also a great advantage of MAX821LUS+T as it allows minimize system power loss. Additionally, the MAX821LUS+T is compatible with wide range of voltage levels, making it extremely versatile and suitable for a number of applications.

Conclusion: MAX821LUS+T is a high-performance power supervisors IC, with wide range of applications in audio, video, mobile device, power supplies and multi-channel data transmission. It is particularly useful in protecting the low voltage power supplies from the effects of overcurrent, overvoltage, excessive loading and temperature. with features like ability to detect input voltage level, cut-off power when input voltage reaches a certain threshold, power saving, and compatibility with wide range of voltage levels, the MAX821LUS+T is attractive solution for any device requiring power.  

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