LT3781IG

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LT3781IG is a DC-DC switching controllers powered by Linear Technology, which offers protection, monitoring, and remote control of complex power supplies.

It is a device with high flexibility and robustness, with adjustable and accurate switching frequency up to 1MHz. It has linear, low dropout, and low noise power delivery. The switching controllers are optimized to use existing integrated features and provide great high-performance solutions for these SMPS designs.

The switching controllers offer a range of features to improve safety and increase reliability. These features include a wide range of overvoltage protection and overcurrent protection, and monitoring of system control signals such as temperature and fan speed. Additionally, the devices offer an adjustable switching frequency for different load conditions and multiple voltage rails.

The LT3781IG allows for the implementation of Synchronous and Asynchronous Buck switching with a single device. It additionally has a 6-bit soft start control with dual internal references and cycle-by-cycle current limit. The LT3781IG also supports multiple external power FETs, enabling design of the higher current Rail-to-Rail buck converters with higher efficiency.

The LT3781IG offers an output voltage accuracy of ±1%, and supports output voltages ranging from 1.2V to 28V. It provides a no-load output voltage accuracy of ±1mV, which is enhanced by the Dual Slope Synchronous Converter - a technique which compensates for the voltage output droop due to load current demand.

The LT3781IG offers continuous output current rating up to 4A, and peak output current up to 5A. It has an adjustable output current limiting, allowing for current regulation even with load variations.

The LT3781IG also allows for output power sequencing, as well as output voltage tracking. It also offers remote control through I2C/SMBus interface, and supports up to 8 system areas. The outputs can be turned off completely with shutdown control, making it an excellent choice for communications, networking, and other applications that require maximum system integration.

The device offers an integrated gate driver, which enables a low-noise and low-dropout solution. It also supports full-bridge and half-bridge topologies. The device has under-voltage lockout, which protects the system from over-discharge, as well as thermal shutdown which protects the device during high temperature operation.

The LT3781IG is a great choice for applications such as data-networking, medical equipment, and general industrial applications. The device offers a wide range of features, and its integrated gate driver provides an extremely low-noise, low-dropout solution. With its adjustable output current limiting, it provides an excellent solution for applications which require current regulation in the presence of load variations.

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