LTC3862EFE-1#PBF - Dual, 2-Phase Synchronous Step-Down Switching Regulator Controller

The LTC3862EFE-1#PBF is a high-performance, dual, 2-phase synchronous step-down switching regulator controller designed by Linear Technology. This advanced controller is specifically engineered to drive N-channel power MOSFETs in a dual polyphase configuration, making it an ideal choice for high current applications requiring up to 12V of output voltage. It is housed in a robust TSSOP-20 package, ensuring a compact footprint for space-constrained applications.

Featuring a wide input voltage range from 4V to 38V, the LTC3862EFE-1#PBF is versatile enough to handle a variety of supply sources, including those from intermediate bus voltages in telecom and industrial systems. Its unique architecture allows for up to 12 phases to be paralleled and clocked out-of-phase, which significantly reduces the required input and output capacitance and provides a very low output voltage ripple.

The LTC3862EFE-1#PBF utilizes current mode control which provides excellent line and load transient response. Additionally, its phase-lockable fixed operating frequency from 75kHz to 850kHz allows users to optimize the size of external components, while its ability to synchronize to an external clock ensures noise-sensitive applications can avoid problematic frequency bands.

Other notable features include differential output voltage sensing, which enhances voltage regulation accuracy in the presence of IR voltage drops. The controller also offers selectable continuous or discontinuous inductor current modes, thereby providing design flexibility to achieve either higher efficiency or lower output ripple. For added protection, it incorporates overvoltage protection, undervoltage lockout, and a foldback current limit, ensuring the safety and reliability of the power system.

With its robust design and comprehensive feature set, the LTC3862EFE-1#PBF from Linear Technology is an excellent choice for engineers looking to implement a high-efficiency, multi-phase power supply in applications such as datacom and telecom systems, industrial equipment, and high-density distributed power systems.