LTC3863IMSE#TRPBF

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The LTC3863IMSE#TRPBF is a highly efficient, high current, high power DC/DC step-down switching controller designed to drive all N-channel power MOSFETs. This application field and working principle is useful in many applications, including those that require continuous mode operation, constant off-time control, and gated output sync signals. Additionally, the LTC3863IMSE#TRPBF is capable of delivering exceptional power levels with high efficiency and reliable current limit protection.

Applications

The LTC3863IMSE#TRPBF is a common choice for in-system, non-isolated switch mode DC-DC power supply applications, such as Adaptive Battery Charger and Low Noise Amplifier power supplies. It can also be used in High Speed Laser Diode and Solid State Lighting systems, as well as any other application where the need for small, quiet and efficient power conversion is essential.

Advantages

The LTC3863IMSE#TRPBF offers several features that make it an attractive solution for many applications. This switch controller’s internal compensation circuitry allows it to be used without the need for external components, reducing design time and system cost. Additionally, the LTC3863IMSE#TRPBF features built-in cycle-by-cycle current limit and thermal shutdown, eliminating the need for additional components. This application field and working principle also offers a wide input voltage range (6V-42V) with an operating temperature range of -40°C to +150°C, making it suitable for a variety of applications. Finally, this switch controller is available in a narrow lead package, which saves board space and helps reduce overall system size.

Operation

The LTC3863IMSE#TRPBF is a synchronous switch controller that utilizes a current mode topology for efficient power conversions. The IC includes a current sense amplifier to sense the frequency of the switching cycle, a voltage reference, and an error amplifier with a built-in frequency compensation amplifier. The current mode feedback loop provides excellent line and load regulation with an adjustable voltage reference.

The LTC3863IMSE#TRPBF provides efficient control of the output voltage with the use of a switching cycle fault-detection feature. This feature adjusts the internal current limit so that the current loop will not cycle off as the load current increases. This allows the converter to maintain a stable output voltage even under varying or transient loads.

The LTC3863IMSE#TRPBF can also be used in constant frequency applications. In this mode, the IC provides a constant frequency output, while still providing the same current loop characteristics. This allows the LTC3863IMSE#TRPBF to be used in applications where a steady output voltage is required.

Package Option

The LTC3863IMSE#TRPBF is available in a 3 mm x 5 mm thermal Enhanced narrow 8 Lead DFN package with a standard junction temperature range of -40oC to +150oC. The narrow package saves board space and allows the LTC3863IMSE#TRPBF to be used in a wide variety of applications. The package includes a pin-out diagram and a description of the function of each pin, as well as a detailed description of the performance parameters.

Summary

The LTC3863IMSE#TRPBF is a highly efficient, high current, high power DC/DC step-down switching controller designed to drive all N-channel power MOSFETs. It is an ideal choice for in-system, non-isolated switch mode DC-DC power supply applications such as Adaptive Battery Charger and Low Noise Amplifier power supplies. This application field and working principle also offers a wide input voltage range (6V-42V) with an operating temperature range of -40°C to +150°C, while providing additional features such as cycle-by-cycle current limit, thermal shutdown, and a constant frequency output. Finally, the LTC3863IMSE#TRPBF is available in a 3mmx5mm 8 Lead DFN package and can be used in a wide variety of applications.

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