LTC3863EMSE#PBF

The LTC3863EMSE#PBF is a monolithic, DC/DC step-down, synchronous or quasi-resonant, switching regulated controller incorporating the full feature set of today\'s advanced controllers. It offers excellent load and line regulations, with adjustable frequency, robust transient response, soft start and adjustable current limit. The LTC3863EMSE#PBF quickly responds to complex load demands and has programmable features such as adjustable switching frequency, voltage sequencing, and selectable soft-start.

The LTC3863EMSE#PBF is a high performance DC/DC controller IC, with current mode architecture and pulsewidth modulation (PWM) control with a unique user-programmable frequency range from 300kHz to 5MHz. The device encompasses all of the functions needed to synchronize, regulate, and limit current of an inductor, or other power transfer element into the output voltage. This capability allows for a wide variety of power supply topologies, from fixed and adjustable outputs to high power systems with multiple outputs isolated from the input voltage.

The LTC3863EMSE#PBF is designed to perform both current mode PWM and synchronous or quasi-resonant PWM operation. It is designed for use in medium and high power applications, and provides both high efficiency and high step-down ratio with excellent current regulation even with high load current spikes. It allows for analog adjustment of output voltage and switching frequency, thus allowing the user to customize its performance to suit the needs of the application.

The LTC3863EMSE#PBF programmable features help to reduce the time and cost of designing a power supply system. Several monitoring and protection functions help to improve system reliability and protect the power supplies from faults and abnormal conditions such as over temperature, output short circuit and overload protection. These features make the controller an optimal choice for applications including DC/DC supplies, power control units, battery chargers, PC and telecom power supplies, industrial power supplies, and general-purpose power conversion.

The LTC3863EMSE#PBF incorporates a current mode architecture with excellent transient response, and adjustable switching frequency, voltage sequencing, and soft-start. The operating frequency is externally adjustable over a wide range of frequencies from 300kHz to 5MHz. With such an adjustable frequency range, the user can control the step-down ratio and optimize efficiency of the power conversion system. The device also provides up to 3.2A of continuous current and can handle a maximum peak output current of 3.5A.

The LTC3863EMSE#PBF includes advanced features such as synchronous or quasi-resonant power conversion, enabling additional efficiency improvements, as well as programmable features such as adjustable output voltage, switching frequency, and soft-start, allowing for better control over the power conversion process. The device also provides enhanced over temperature protection and a number of optional protection features, including output current limit, short circuit protection, open loop protection, and output voltage shutdown, to protect the device from damaging conditions.

The LTC3863EMSE#PBF is a reliable, high performance solution for applications requiring programmable switch controllers. With its wide range of features, including current mode operation, adjustable frequency and output voltage, programmable switching mode, and comprehensive protection functions, the LTC3863EMSE#PBF is ideal for applications requiring medium or high power, high efficiency, and low cost.