MAX6363PUT31+T

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Power management integrated circuits (PMICs) are used in a variety of applications to ensure safe and efficient operation of electronic systems. Supervisory circuitry is used to monitor the system and provide control if an overvoltage or undervoltage condition is detected. The MAX6363PUT31+T is a low-power microprocessor supervisory circuit that provides voltage monitoring, reset control, and power-on reset functions in many digital applications. This application note discusses the features of the MAX6363PUT31+T and its applications.

The MAX6363PUT31+T is a low power, three-terminal micropower voltage supervisor that provides accurate trip points for monitoring system voltages. It can be used to monitor either the input power supply voltage or system voltages that may be derived from the input supply by using a linear regulator or switching regulator. The MAX6363PUT31+T is capable of monitoring both high-voltage and low-voltage trip points and can detect both overvoltage and undervoltage conditions.

The MAX6363PUT31+T has up to three trip points. The two primary trip points are the MAX and RESET pins, which can be configured for high-voltage and low-voltage levels. The MAX pin is typically used to detect an overvoltage condition, while the RESET pin is used to detect an undervoltage condition. Additionally, an optional third trip point is provided. This third trip point can be connected to the MAX pin to create a second overvoltage protection level, or it can be connected to the RESET pin to create a second undervoltage protection level.

The MAX6363PUT31+T also features an optional active-low reset output pin. This pin is used to control any external devices that require resetting, such as microprocessors, operating systems, external memories, and system peripherals. This active-low reset output pin provides an extended reset pulse width of up to 1200µs for the resetting of slow-acting system components.

The MAX6363PUT31+T is available in a variety of packages, including the 5-pin SOT23 package, and can operate over an operating temperature range of -40˚C to +125˚C. Additionally, the MAX6363PUT31+T is provided with an input voltage range of 1.8V to 5.5V, making it suitable for a variety of applications.

The MAX6363PUT31+T is ideal for applications that require a low-power, low-cost voltage supervisor. It can be used to monitor the system power supply voltage or derived system voltages. The MAX6363PUT31+T is also suitable for use in power systems that require overvoltage and undervoltage protection. Additionally, the active-low reset output enables control of external devices that require resetting, such as microprocessors, operating systems, external memories, and system peripherals.

In addition to voltage monitoring and reset control, the MAX6363PUT31+T provides a power-on reset (POR) function. This feature supports system startups and power-up sequencing. The POR function is initiated when the input voltage rises above 4.75V from a previous state of 3.0V or lower. On power up, the MAX6363PUT31+T will generate a reset pulse to ensure smooth operation of the system.

In summary, the MAX6363PUT31+T is a low-power microprocessor supervisory circuit that provides voltage monitoring, reset control, and power-on reset functions. It is ideal for digital applications that require a low-power, low-cost voltage supervisor, and can be used to monitor either the input power supply voltage or derived system voltages. The MAX6363PUT31+T is provided with an input voltage range of 1.8V to 5.5V and an operating temperature range of -40˚C to +125˚C, making it suitable for a variety of applications.

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