S-80859CNMC-B9KT2G

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Power management integrated circuits, or PMICs, have become ubiquitous components in most electronics, from televisions and computers to mobile phones, tablets and other consumer products. A subcategory of PMICs are supervisors, whose main purpose is to provide power-on reset and voltage supervisor functions, protect the overall system from crashes caused by power-on irregularities, and monitor the power supply lines for potential system malfunctions. The S-80859CNMC-B9KT2G is an example of a PMIC supervisor, an exceptionally reliable and robust device with a variety of application fields and a dependable working principle.

Application in Industry

The S-80859CNMC-B9KT2G supervisor is designed for applications with the highest load currents and operating voltages. Featuring a precise voltage supervisor with adjustable thresholds, a managed reset signal, a programmable watchdog timer, and output enable command flexibility, the unit enables designers to deploy complete system power on reset and overvoltage protection.

The S-80859CNMC-B9KT2G is ideal for regulated power-on systems, generally for use in medical, industrial, and automotive markets where precise digital control of high load devices is critical. Its precise voltage supervising and clearly defined digital signaling provide fail-safe power-up, power-down and overvoltage protection for the system, so that the supervisor remains in complete control throughout any emergency situation.

Working Principle

The S-80859CNMC-B9KT2G is a low-dropout width modulated (LDM) supervisor IC. It features a controlled output (RESET) pin, as well as two programmable under-voltage detectors, which are connected in parallel. One detector is internally preset to trigger a reset when the voltage drops below 3.2V, and the other can be programmed to the desired level between 3.2V and 4V. The LDM function ensures that the reset signal is asserted within 0.45V from the trigger level. That is, the reset signal will be asserted when the input voltage drops to 2.75V (or the user programmed threshold).

The reset signal is held for 300ms after the input voltage rises back above its trigger level. The time delay is designed to ensure that the regulator has sufficient time to stabilize within the user defined start-up range. Additionally, an internal timer is also included, which can be programmed to delay the RESET signal if the voltage remains below the trigger level for longer than a certain amount of time. This helps to prevent the RESET signal from being triggered due to noise or other transient speeds.

In addition to its voltage supervisor functions, the S-80859CNMC-B9KT2G also features an output enable (OE) pin, which provides output enable flexibility. This allows the user to toggle the output of the RESET signal when certain conditions are met. This feature is useful in situations where system protection is more critical, as it allows the user to control the output of the RESET signal according to the exact situation.

Benefits and Advantages

The reliable and robust S-80859CNMC-B9KT2G supervisor offers a variety of advantages, such as reliable voltage supervision, a managed reset signal, a programmable watchdog timer, and output enable flexibility. It is designed to provide power-on reset and overvoltage protection for the system and help to prevent system malfunctions, making it an ideal solution for any high load power-on system. Additionally, the S-80859CNMC-B9KT2G is a low-power device, consuming only 1.6mA of current while operating, making it a cost-effective solution for any system.

In addition to all its features, the S-80859CNMC-B9KT2G is designed to ensure a safe and reliable system. It provides a wide range of custom voltage supervision and reset levels, as well as output enable flexibility, making it a reliable and robust solution for any system. And with its low-power consumption and cost-effective design, the S-80859CNMC-B9KT2G is the perfect choice for any high load power-on system.

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