MAX16021LTES+

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The MAX16021LTES+ is a Voltage Supervisory IC, designed to monitor and control five rails of varying voltages. This device is intended to provide power management solutions in applications such as smartphones, tablets, PC peripherals, smart TVs, and TV set-top boxes. This particular IC includes several features such as dual reset outputs, a pushbutton reset input, as well as a voltage sense input.

The features of MAX16021LTES+ include an adjustable power-on reset threshold of 2.4V to 5.5V for detecting the main power source, adjustable power good monitoring voltage thresholds from 1.7V to 5.5V and adjustable reset timeout delays from 22ms to 8s. It also provides a power-on reset 100ms (typical) reset delay and allows the setting reset delays through the SPI interface. The device provides dual active-high RESET, a one-time active-high PBR (pushbutton reset) and an active-high TTL RESET output.

The data and configuration for the device are stored in its on-chip memory, which is accessible through an SPI interface, allowing for a variety of power management applications and system behavior. The MAX16021LTES+ also provides a host of diagnostic capabilities, allowing designers to observe the voltage, timing and configuration of each rail. It has up to 6 pins for voltage sensing and can measure up to 6 different system voltages.

The working principle of theMAX16021LTES+ is simple. When power is applied the IC starts to monitor the voltage levels on the rails. If the voltage on the input is greater than the configured reset threshold, the circuit will reset. The reset threshold and timeout period can be programmed via the SPI interface. The circuit provides two outputs, a RESET and a PBR (Push/Hold Reset). The RESET output is active low and goes low when any of the monitored rails is below its configured threshold. The PBR is active high once the power is applied to the input and will stay active until the programmed delay period is expired or the power supply is removed. The PBR can be used to manually reset the system.

In summary, the MAX16021LTES+ is a Voltage Supervisory IC with a range of features that allow designers to customise their system\'s power management functions. It offers multiple voltage sense references, adjustable power-on reset thresholds, adjustable reset delay times and dual active-high reset outputs. In addition, it allows for easy programming of different configuration settings via an SPI interface. The combination of features makes the MAX16021LTES+ ideal for a variety of applications.

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