MIC803-40D4VM3-TR

Series:	--
Packaging:	Cut Tape (CT)
Part Status:	Discontinued at Digi-Key
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	1.12 s Minimum
Voltage - Threshold:	4V
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3

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The MIC803-40D4VM3-TR is a type of PMIC (Power Management Integrated Circuit) known as a Supervisor. Supervisors are commonly used to maintain the operation and functionality of a system’s power systems, particularly when dealing with reset sequences, overvoltage and undervoltage protection, and managing low voltage and other critical system functions. Here we take a look into the application field, as well as the working principle of the particular type of supervisor being discussed: the MIC803-40D4VM3-TR. Application FieldsThe MIC803-40D4VM3-TR can be found in numerous application fields, including but not limited to industrial automation and control, digital media, telecom and networking, automotive and electronic gaming. This type of supervisor is particularly useful in many computing devices, such as laptops and desktop computers. It is ideal for preventing the system from becoming unstable due to unexpected power supply variations. In general, it can be used in any system that requires effective power monitoring and reset operation. Working PrincipleThe MIC803-40D4VM3-TR supervisor operates on a three-level system, which consists of three states: Reset (Initial), Monitored, and Active. In the Reset state, the device is off, and all processes are inactive. In the Monitored state, the supervisor monitors the power supply voltage, and if the voltage drops below a user-defined limit, the Reset state is triggered. In the Active state, the device will activate any processes that are programmed to run when in this state. The MIC803-40D4VM3-TR supervisor has a wide range of features that make it one of the most versatile and reliable power management solutions available in the market today. It has three output pins that can be configured for various reset enable, inhibit, or reset assert functions. This type of supervisor also has voltage monitoring and watchdog timer functions, allowing it to identify and respond to any power supply voltage events. In addition, its tamper detection feature can detect any discrepancies in the power supply voltage and quickly react to it by bringing the system to the Reset state. The MIC803-40D4VM3-TR supervisor also has a power-on reset (POR) feature, which can detect any sudden changes in the system\'s power supply and automatically initiate the Reset state. It also has an automatic low voltage detector (LVD) feature, which can detect any voltage changes below a certain threshold, and automatically reset the system to the Reset state. Furthermore, this device has a temperature-sensing capability, allowing it to detect any temperature changes in the system and automatically carry out safe shutdown procedures. ConclusionThe MIC803-40D4VM3-TR supervisor is an extremely versatile and reliable power management solution, providing a wide range of features for various application fields. Its robust construction ensures that it can effectively monitor and control any power supply related issues and keep the system safe from unexpected voltage variations. Furthermore, its temperature sensing, POR, and LVD features make it a great choice for any system that requires reliable power management.

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