LTC4412ES6#TRPBF - Low Loss PowerPath Controller

The LTC4412ES6#TRPBF is a sophisticated integrated circuit designed by Linear Technology, now part of Analog Devices, for managing power distribution in systems that require multiple power sources. This low loss PowerPath controller ensures seamless transitions between power sources, such as a battery and a wall adapter, without interrupting the supply to the load. Its primary application is in portable electronic devices, where maintaining a consistent power supply is crucial for uninterrupted operation.

This controller operates with an external P-channel MOSFET to create a near-ideal diode function with a very low voltage drop. This feature is essential for preserving energy in battery-powered systems, as it minimizes the power dissipation that typically occurs across a standard diode. The LTC4412ES6#TRPBF is designed to control the forward voltage drop across the MOSFET to ensure that it is low, typically in the range of 20mV to 30mV at 1A, which is significantly less than what would be seen across a Schottky diode.

The LTC4412ES6#TRPBF has a wide input voltage range of 2.5V to 28V, making it versatile for various applications. It also features a low quiescent current of only 11μA, which is beneficial for prolonging battery life in portable devices. The device is capable of withstanding and controlling high inrush currents without the need for a current sense resistor, thanks to its internal charge pump designed to drive the gate of an external P-channel MOSFET above the source voltage.

For added flexibility, the LTC4412ES6#TRPBF includes a status pin that provides an indication of whether the external MOSFET is on or off. This allows for additional control and monitoring within the system. Furthermore, the controller is offered in a compact SOT-23 package, making it suitable for space-constrained applications.

Overall, the LTC4412ES6#TRPBF from Linear Technology is an efficient and reliable solution for managing power paths in multi-source systems, ensuring minimal power loss and providing consistent power supply to critical components.