MIC803-40D4VC3-TR

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Power Management Integrated Circuit (PMIC) plays an essential role in modern electronic system designs. Its purpose is to optimize the power usage of each individual component within the system to efficiently and reliably control the power distribution of all the components. In particular, Supervisors is a class of PMIC that provides a wide range of system safety and monitoring functions, such as monitoring the operating temperatures, detecting supply voltage interruptions, controlling reset and power-on states, providing clock signals, and also providing system status feedback. One example of a Supervisor is the MIC803-40D4VC3-TR, which is a versatile and widely used supervisor device.

The MIC803-40D4VC3-TR is a 4.5-2.7V device that operates over a wide temperature range from -40°C to +85°C. It is widely used in applications that require reliable system monitoring, like automotive, industrial and medical systems. It provides a wide set of features that make it suitable for a vast range of applications and environments. It is also a flexible and highly programmable device, with a wide range of configurable options that can be tailored to suit different application requirements.

This device features a 3-channel watchdog timer (WDT): one dedicated to power-on reset (POR), one dedicated to system reset and one dedicated to undershoot/overload protection. The POR channel monitors the system power supply, and when the power supply voltage drops below the programmed POR threshold voltage, the POR channel will generate a reset signal. The system reset channel can be configured to generate a reset signal when any of the system\'s conditions are out of the expected range, such as an over temperature condition or a power supply voltage interruption. The overload or undershoot protection channel is used to provide protection against unexpected current or voltage surge.

The MIC803-40D4VC3-TR also features a 4.5V to 2.7V voltage detection channel. This channel monitors the system supply voltage and will generate an interrupt (INT or RSTN) when the system supply falls below the programmed voltage detection threshold voltage. This feature provides system designers with enhanced visibility into the power supply conditions, enabling them to detect and respond more quickly to any unexpected power supply conditions.

The MIC803-40D4VC3-TR also offers improved system performance through its built-in clock generator. This oscillator option provides the flexibility to program different clock frequencies, reducing the need for an external clock source. Furthermore, the frequency can be modified in-situ with a simple stroller switch.

The device is designed to run on minimal external components, only requiring an external resistor to adjust the WDT related functions. In addition, the device offers several power saving options to reduce operating current and extend overall system battery life. The MIC803-40D4VC3-TR also provides system designers with the ability to monitor the power supply status through an interrupt pin and/or reset pin.

Overall, the MIC803-40D4VC3-TR is an ideal device for applications that require reliable system monitoring and verification. Its wide operating range makes it suitable for a wide range of industrial, automotive, and medical systems. The device provides a programmable reset and Power On reset, a voltage detection channel, and improved system performance through its built-in clock generator. Furthermore, its operation is simplified due to its minimal external component requirements, and its power saving options increase system battery life. All these features make the MIC803-40D4VC3-TR a versatile and highly configurable device for Supervisor applications.

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