MXD1816XR22+T Integrated Circuits (ICs)

PMIC (Power Management IC) supervisors, such as the MXD1816XR22+T, are integrated circuits and system-level solutions designed to maintain stable power supply voltages in portable and embedded applications. The MXD1816XR22+T provides a comprehensive suite of features and functions to ensure that power-hungry digital and analog systems remain powered during critical high-current load events or during periods of low-input power. MXD1816XR22+T application field and working principle are discussed in this article.

Applications of MXD1816XR22+T

The MXD1816XR22+T is a PMIC supervisor designed to provide controlled power supply voltages to ASICs, CPLDs and FPGAs in applications such as automotive, communications, industrial, medical, and consumer electronics. It is an ideal solution for applications requiring high levels of system power integrity, including power-hungry memory modules, microcontrollers, system-on-chip (SoC) based systems, and multilayer board designs that require multiple low-voltage voltage stages for proper operation.

The MXD1816XR22+T is designed to provide controlled power supply voltages to ASICs, CPLDs, FPGAs and other digital components during low-voltage and high-current load events while maintaining system stability. It is also capable of controlling and maintaining temperature of the system, as well as recovering power removal and dropouts.

The MXD1816XR22+T has several features that enable it to fulfill the requirements of these demanding applications. These include an integrated low voltage detection circuit, an adjustable reset delay timer, an input voltage range of 1.8V to 5.5V, and an adaptive reset timer that adjusts the reset threshold value depending on the input voltage range and the load current. The MXD1816XR22+T offers 50 μA typical supply current, a 350 mV reset threshold voltage, and a wide operating temperature range of -40°C to +85°C.

Working Principle of the MXD1816XR22+T

The MXD1816XR22+T is a specialized PMIC supervisor IC designed to maintain system power integrity and to protect the system from excessive power draw. It operates by monitoring the system’s voltage levels and, in response to a drop in supply voltage or an increase in load current, generating a reset signal that triggers a power reset event in the system.

The reset event is then used to reset the system’s electronics back to their default settings. The reset threshold is adjustable, and the reset delay timer is adaptive so that the system can be configured to reset in a nano-second or up to 8 milliseconds. The reset can also be disabled or triggered by either an external signal or an internal programming register.

The MXD1816XR22+T also integrates a variable-frequency oscillator that can be used to accurately measure the input voltage. This feature enables it to modulate the switching rate of DC-DC controllers depending on the input voltage.

The MXD1816XR22+T also provides an input overvoltage protection (OVP) circuit that detects voltages that exceed their appropriate levels and prevents damage to the system. It also has a programmable voltage monitor (Vmon) output, which provides an indication of system status.

The MXD1816XR22+T can be used in a wide variety of applications, from audio and video systems to computing, telecommunications and industrial automation. Its features enable it to maintain system power stability and ensure that the system is kept free of power-hungry digital and analog events.

Conclusion

The MXD1816XR22+T is a PMIC supervisor IC designed for applications that require stable power supply voltages. Its features include an adjustable reset delay timer, a wide operating temperature range, an integrated low voltage detection circuit, and input overvoltage protection. The MXD1816XR22+T is an ideal solution for applications that require high levels of system power integrity, including power-hungry memory modules, microcontrollers, system-on-chip (SoC) based systems, and multilayer board designs.