The LTC3857IUH#PBF is an integrated circuit (IC) component designed for high-efficiency synchronous step-down DC/DC converter applications. It is manufactured by Linear Technology, which is a part of Analog Devices.
The LTC3857IUH#PBF is a high-performance device capable of delivering output currents up to 20A with input voltages ranging from 4.5V to 38V. It operates at a fixed frequency of 500kHz, which enables compact and low-profile solutions. The IC uses an external resistor to set the output voltage, which can be as low as 0.6V.
One of the key features of the LTC3857IUH#PBF is its high efficiency, which is achieved through the use of a synchronous rectification topology. This topology minimizes power losses in the form of heat and improves overall system efficiency. The IC also incorporates low RDS(ON) internal power MOSFETs, minimizing switching losses.
The LTC3857IUH#PBF comes with a wide selection of protection features to ensure safe and reliable operation. It includes overvoltage protection (OVP), overcurrent protection (OCP), and programmable soft-start functionality. The device also incorporates a Power Good (PG) pin that provides a signal to the system controller when the output voltage is within a predefined range
