MIC1815-10UY-TR Integrated Circuits (ICs)

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PMICs, or power management integrated circuits, are essential components in modern electronic systems. They provide critical voltage and current regulation, provide monitoring and alerting, and provide over-voltage, under-voltage, and over-current protection. Supervisors are one type of PMIC that are designed to monitor supply voltages and terminate a system reset when voltage levels exceed acceptable conditions. In this article, we will discuss the MIC1815-10UY-TR, an example of a supervisor PMIC, its application field, and the principles of its working.

The MIC1815-10UY-TR is a 3.3V Supervisor with Open-Drain Active-low Reset Output. It is a highly integrated single-chip solution of a voltage supervisor with a built-in voltage detector, high current buffer and open-drain active-low output, all in a 10-pin Ultra Thin Clay SMD package. The operating voltage range is 2.0V to 5.5V and the reset push-pull output drive capability is ±2.5mA (at 4.5V). Additionally, the reset output is active-low and it has an adjustable manual reset input. Its advantages include low power consumption, low noise, and low reset output voltage.

The MIC1815-10UY-TR is suitable for a variety of applications including consumer and embedded products, automotive electronics, and industrial equipment. For consumer and embedded products, the MIC1815-10UY-TR is used for system reset and power-on reset (POR) functions. This PMIC can be used to supervise and monitor power supply conditions, such as over-voltage and under-voltage, and to reset the system when a fault condition is detected. In automotive electronics, the MIC1815-10UY-TR can be used as a supply voltage supervisor in onboard computers and other safety systems. Finally, in industrial applications, the MIC1815-10UY-TR can be used to provide reset and supervision functions in industrial equipment and process control systems.

The MIC1815-10UY-TR has several features that make it ideal for applications requiring voltage supervision. It has high accuracy in detecting voltage level and fast response time, with reset delay options that can be adjusted between 60ms and 1000ms. Additionally, it has an automatic reset generation after power-up, which is ideal for fast system recovery. The manual reset input can also be used to force a reset when an event needs to be cleared. Finally, the open-drain output provides a low current reset signal and can be used to drive other circuits or peripheral devices.

The MIC1815-10UY-TR works on the principle of comparing input voltage and setting the reset output when a fault is detected. Inside the PMIC is a bandgap reference circuit and an error amplifier. The bandgap reference circuit generates an accurately fixed level voltage to the system and measures the supply voltage. The error amplifier compares the input voltage with the fixed reference voltage to adjust the reset output state, and the reset output will be enabled (hold low) when there is a voltage deviation for over voltage, under voltage, or over current conditions.

In summary, the MIC1815-10UY-TR is a Supervisory PMIC that is designed to monitor supply voltages and terminate a system reset when voltage levels exceed acceptable conditions. It is suitable for use in a variety of applications such as consumer and embedded products, automotive electronics, and industrial equipment. It features high accuracy in detecting voltage levels, fast response time, and an open-drain reset output. Its working principle is based on comparing input voltage with the fixed reference voltage and enabling the reset output when a voltage deviation is detected.

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