MAX803SEXR/V+T

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Power management integrated circuits (PMICs) are complex and versatile components that serve a wide range of applications. Supervisors are a subset of PMICs designed to monitor and respond to system voltages, ensuring that the power supply is stable and reliable. One such example of a supervisor IC is Maxim Integrated\'s MAX803SEXR/V+T. This document will discuss the application field and working principle of the MAX803SEXR/V+T supervisor IC.

MAX803SEXR/V+T Application Field

The MAX803SEXR/V+T is a low-voltage supervisor IC, designed to provide reliable power monitoring and protection for embedded systems, such as smartphones, IoT devices, and other low-voltage applications. It offers protection against over-voltage, under-voltage, and over-temperature events, with high accuracy and low power consumption. The MAX803SEXR/V+T is also designed to meet stringent system timing requirements and is able to respond quickly to changes in system conditions.

MAX803SEXR/V+T Working Principle

The MAX803SEXR/V+T is composed of a voltage supervisor, an over-temperature circuit, and an adaptive programmable reset timing circuit. The supervisor monitors system voltages and compares these against the 4 thresholds set in the device. If a threshold is exceeded, the supervisor will assert a reset signal to the system. The reset signal is routed through the reset timing circuit, which delays the reset signal for a pre-programmed period, allowing for a more graceful system shutdown.

The integrated over-temperature circuit monitors the system temperature and can be used to shut down the system before damage occurs. The integrated temperature sensor also has an adjustable hysteresis, which prevents over-shutdowns due to short-lived temperature spikes. Lastly, the MAX803SEXR/V+T has an integrated voltage detector, which can be used to reduce power consumption in standby mode.

Conclusion

The MAX803SEXR/V+T is a low-voltage supervisor IC, designed to provide reliable power monitoring and protection for embedded systems. It offers protection against over-voltage, under-voltage, and over-temperature events and can be programmed to meet stringent system timing requirements. Additionally, it includes an adjustable over-temperature circuit and an integrated voltage detector, which can be used to reduce stand-by power consumption. With its wide range of features, the MAX803SEXR/V+T is an ideal solution for embedded systems and other low-voltage applications.

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