Maxim Integrated MAX1812EUB USB Port Power-Controller IC

The MAX1812EUB from Maxim Integrated is a sophisticated and feature-rich USB port power-controller integrated circuit (IC) designed to manage the power requirements of USB peripheral devices. This compact and efficient IC is housed in a space-saving 10-pin µMAX package, making it an ideal solution for applications where board space is at a premium.

The MAX1812EUB is engineered to provide precise control over the power delivered to USB devices. It is fully compliant with the USB 2.0 specification and can handle up to 500mA of continuous load current, which is the maximum current that can be drawn from a standard USB port. This makes it perfectly suited for a wide range of USB-powered gadgets, including external hard drives, portable media players, and other USB peripherals.

One of the key features of the MAX1812EUB is its integrated current-limiting function, which protects the host device from excessive power draw that could potentially cause damage. In the event of an overcurrent condition, the IC will automatically limit the output current to a safe level. Additionally, it also features thermal shutdown protection to prevent overheating, further ensuring the safety and longevity of both the controller IC and the host device.

The MAX1812EUB also boasts a low-dropout (LDO) linear regulator with a typical dropout voltage of just 100mV at 500mA, ensuring efficient operation and minimal power loss. This low dropout feature is particularly beneficial in battery-powered applications, where conserving power is of utmost importance.

For added flexibility, the MAX1812EUB offers an active-low enable input, which allows the power to the USB port to be turned on or off via a control signal. This feature can be used to implement power-saving modes or to disconnect the power from the USB port when it is not in use.

In summary, the Maxim Integrated MAX1812EUB is a highly reliable and efficient solution for managing power in USB applications. Its comprehensive protection features and low-power operation make it a top choice for designers looking to enhance the performance and safety of their USB-powered devices.