Linear Technology LTC4355IMS#TRPBF Diode-OR Controller

The LTC4355IMS#TRPBF is a robust diode-OR controller designed by Linear Technology to provide an efficient solution for systems requiring power redundancy. This advanced component is engineered to replace power diodes with N-channel MOSFETs, creating a low loss OR-ing diode that is ideal for a wide range of applications such as redundant power supplies, servers, and telecom systems where seamless transition between multiple power sources is critical.

With the LTC4355IMS#TRPBF, systems can benefit from a significant reduction in power dissipation compared to traditional Schottky diodes. The device controls the external N-channel MOSFETs to function as ideal diodes, conducting the higher voltage supply and blocking the lower. This ensures that the power source with the highest voltage will provide the current to the load, enhancing efficiency and reliability.

The controller operates over a wide voltage range, from 9V to 80V, making it versatile for various applications. It also features a fast switch-over time to the higher voltage supply, ensuring minimal interruption during power source transitions. For added reliability, the LTC4355IMS#TRPBF includes overcurrent protection, which prevents damage to the MOSFETs in the event of a fault condition.

Another notable feature of the LTC4355IMS#TRPBF is its ability to provide power path control with minimal voltage drop. The MOSFETs' low on-resistance reduces voltage drop and heat dissipation, which can be critical in high-current applications. In addition, the controller's 16-lead MSOP package is compact, saving valuable board space in densely packed systems.

Designed for ease of use, the LTC4355IMS#TRPBF includes status outputs that indicate whether an external MOSFET is on or off, providing valuable diagnostic information. The device also offers a UV/OV (under voltage/over voltage) feature, which disables the external MOSFETs during out-of-spec voltage conditions to protect downstream components.

In summary, the LTC4355IMS#TRPBF from Linear Technology is a high-performance diode-OR controller that offers efficient power management with protective features, making it an excellent choice for systems that demand reliable and seamless power redundancy.