MAX6383XR17D1+T

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Power Management Integrated Circuit (PMIC) is an integrated circuit that controls electrical power and interacts with other circuits in order to control system power. A PMIC can provide multiple power rails with tracking functions, voltage monitoring, dynamic voltage scaling and other features. PMICs are used in applications such as computers, vehicles, cell phones and other portable devices where reliable power management is needed. Supervisors are a subset of PMICs that provide a comprehensive range of protection and monitoring functions to protect a system or subsystem. The MAX6383XR17D1+T is a Supervisor IC designed for a variety of applications.

Applications

The MAX6383XR17D1+T is a low-power, low-voltage Supervisor IC designed for microprocessor- and SoC-based applications. It provides power-on reset (POR) and power supply monitoring (PSM) functions in a small, thermally enhanced 10-pin package. The POR function assists in system initialization and brownout detection, while the PSM monitors the supply voltage and indicates system power-good status. It is ideal for applications such as desktop and notebook computers, consumer electronics, automotive systems, and other situations where low-power and accurate voltage monitoring are needed.

The MAX6383XR17D1+T has low operating and supply current, fast response time, a low operating temperature range, and wide temperature range. It is compatible with many microprocessors and SoCs, including Intel’s Pentium, AMD’s Athlon and 6th-gen Core, ARM-based XScale and Cortex processors, and others. Additionally, it has an adjustable reset threshold that can be adjusted with external resistors to provide an optimal system threshold to match the system supply voltage.

Working Principle

The MAX6383XR17D1+T uses a combination of voltage monitoring and hysteresis to determine the power-good status of the system. When power is applied, the voltage between VIN and GND is monitored and compared to the adjustable threshold. If the voltage is above the threshold, the PWRGOOD signal is asserted, indicating that the power is good. If the voltage drops below the threshold, the PWRGOOD signal is de-asserted, indicating that the power is not good, and the reset is activated. The hysteresis helps to reduce false triggering due to noise, ensuring reliable power supply monitoring.

The MAX6383XR17D1+T also provides additional safety features, such as overvoltage (OV) and undervoltage (UV) protection. These features allow the supervisor to detect input voltage that is outside a predetermined voltage range, and then trigger a reset in order to protect the system from an overvoltage or undervoltage situation. The adjustable overvoltage and undervoltage thresholds allow the supervisor to meet various system requirements.

The MAX6383XR17D1+T also includes an active high RESET output that asserts after power is applied and de-asserts after the input voltage has reached the designated threshold. The RESETB output is an active low RESET output with an open-drain configuration that requires a pull-up resistor in order to operate correctly.

Conclusion

The MAX6383XR17D1+T is an extremely versatile supervisor IC ideally suited for use in a wide range of microprocessor- and SoC-based applications. It provides accurate power supply monitoring and reset functions, along with additional protection features such as overvoltage and undervoltage protection. It has a wide operating temperature range and thermally enhanced 10-pin package, making it suitable for a variety of situations. The adjustable reset threshold and external OV/UV thresholds make it easy to customize the supervisor IC for a specific application. The MAX6383XR17D1+T is a great choice for reliable power supply monitoring and protection.

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