MAX5900NNETT+T

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PMIC - Hot Swap Controllers

The MAX5900NNETT+T is a hot swap controller with 8-bit I2C host interface from Texas Instruments (TI). It is used as an intelligent power controller in portable devices, especially when connecting to an external power supply without power sequencing. It is specifically designed to protect against over-voltage, current limit, over-current, under-voltage and reverse-bias conditions.

Application Field

The MAX5900NNETT+T can be used in a wide variety of applications where external power connections need to be controlled. This includes USB Type-C devices, smartphones, tablets and other mobile devices, as well as embedded systems, sensors and instrumentation. The controller is ideal for applications such as hot-plug and hot-swap protection, system power sequencing, as well as battery and power management.

Working Principle

The MAX5900NNETT+T is designed to provide on-chip power control for single-cell systems, such as portable devices. It is a multi-channel controller that provides protection during insertion and removal of the power supply and external battery connections. During hot-swap operations, the controller will detect the presence of power supplies and external batteries and transition the power device between 0V and an active voltage.

When connecting an external power supply or battery, the controller will monitor the electrical parameters and generate the appropriate power-on transition signals. In addition, once the supply is connected, the controller will periodically monitor the power supply for any over-voltage and over-current faults, and issue an interrupt to the host microcontroller in case of any detected fault.

Conclusion

The MAX5900NNETT+T is a cost-effective hot-swap controller from TI that is suitable for use in a variety of portable devices and embedded systems. It provides intelligent power control and protection features, such as over-voltage, current limit, over-current, under-voltage and reverse-bias protection, as well as power sequencing and battery management. With its user-friendly hardware and software design, the MAX5900NNETT+T is an ideal choice for a wide range of hot swap applications.

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