LTC3872EDDB#TRMPBF

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LTC3872EDDB#TRMPBF Application Field and Working Principle

As an integrated circuit, the LTC3872EDDB#TRMPBF is a highly integrated synchronous monolithic buck controller with an on-board MOSFET driver, which can easily be applied in PMIC (Power Management IC) and voltage regulator areas. It belongs to DC DC switching controllers, and works at the agreement of TOPSwitch-HX, a type of chip integrated circuit with minimal external components for non-isolated off-line switch mode related power supplies.

The LTC3872EDDB#TRMPBF synchronous buck controller integrates integrated MOSFET drivers which can achieve high current driven capability. This controller is suitable for a variety of operating conditions, including high input voltage up to 80V and high output power up to 600W. Its high power density and low cost enable industry applications to be greatly improved, such as notebook adapters and desktop adapter designs.

In terms of its technical parameter, the switching frequency of the LTC3872 EDDB#TRMPBF is adjustable between 100KHz and 1MHz, offering programmability to optimize size and performance. This controller integrates an integrated MOSFET gate driver, which can deliver up to 6A peak. It also integrates a high voltage current sense amplifier, voltage reference as well as comprehensive safety time-outs including soft-start and negative voltage protection.

The operating principle of the LTC3872 EDDB#TRMPBF lies in its high output voltage accuracy. Different from traditional voltage mode controllers, this type of controller utilizes an integrated error amplifier to drive an external high speed synchronous N-channel MOSFET. The combination of error amplifier and synchronous MOSFET offers excellent voltage regulation accuracy, thus ensuring the output voltage to reach the target voltage setpoints.

Apart from a high output voltage accuracy, the LTC3872EDDB#TRMPBF offers advanced features, such as over-load protection, fast transient response, and strong immunity against case temperature variation in the environment. It can help designers to reduce the component count and minimize the design time. These advantages make it possible for engineers to work in various power supply applications.

In conclusion, the LTC3872EDDB#TRMPBF is a highly integrated synchronous monolithic buck controller with excellent performance, which can easily be applied in power management ICs, voltage regulators, and other DC DC switching controllers related application fields. Although it features low cost and high power density, its advanced features such as high output voltage accuracy, fast transient response and strong immunity against case temperature variation in the environment offer great protection and working performance.

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