MAX6381XR23D6-T

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Power management integrated circuits (PMICs) are devices used in a variety of applications to manage and optimize the performance of power supplies. Specifically, PMICs are used to monitor and control the DC voltage and current, as well as monitor and regulate the various components of a power supply. Supervisors are a type of PMICs that are specifically designed to protect the power supply from any over-voltage or over-current conditions. The MAX6381XR23D6-T is a PMIC supervisor that is designed to protect a 3.3V or 5V supply and provide reset when an over-voltage/over-current condition occurs.

The MAX6381XR23D6-T supervisor is ideal for applications requiring extra voltage protection, such as automotive systems, consumer electronics, medical devices, gaming consoles, and industrial and networking systems. It operates over a wide operating temperature range of -40°C to +125°C in a 5-pin SOT-23 package. The MAX6381XR23D6-T also features a low operating current of 6.0μA and fast Vcc Reset input specification providing robust power supply protection.

The working principle of the MAX6381XR23D6-T is designed to protect circuits from over-voltage and over-current conditions. It begins working by monitoring the voltage level on the SELA pin and the VCC pin. When the voltage on the SELA pin is lower than the voltage on the VCC pin, then the MAX6381XR23D6-T operates in normal mode. In this state, it also monitors the voltage level on the VCC pin and if it rises above the over-voltage/over-current levels specified in the datasheet, then it will trigger the reset signal. This reset signal is then sent to the Vcc Reset pin to reset the system. The reset is an active-low open-drain signal which can be pulled up to VCC or left open on the board.

The MAX6381XR23D6-T also provides power-on reset (POR) protection for the system. If the VCC rises above the reset threshold within a given timeout, then the POR flag is set. Additionally, the comparator monitors the power supply rail, SELA pin voltage, and the power supply reset level for both rising and falling edge conditions. The device is also latch-up free and requires no external components, making it ideal for space-sensitive applications.

The MAX6381XR23D6-T PMIC supervisor provides a cost-effective solution for monitoring and protecting high-quality power supplies against over-voltage and over-current conditions. Its built-in power-on reset, voltage monitoring, and comparator features provide additional assurance that the power supply is operating within the specified voltage range. Additionally, it can be used in a wide range of applications and is suitable for operation over a wide temperature range.

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