LTC3563EDC#TRMPBF

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Linear Technology Corporation’s LTC3563EDC#TRMPBF is a synchronous buck regulator DC-DC switching IC that integrates a high performance power switch, a low-noise voltage regulator and a control block into one single package. With a switching frequency of up to 2MHz, the IC is able to offer a higher voltage conversion efficiency than traditional architectures, enabling a wide range of applications including portable products, power-sensitive systems and automotive systems.

The choice of features the IC has to offer ensures a wide range of application fields. It can be used in automotive ECU, Lithium-Ion battery-powered portable devices, high power lighting, telecommunication systems, automotive power systems, point of load applications, and many others.

Applications

The LTC3563EDC#TRMPBF is a high performance DC-DC switching regulator, designed for DC to DC conversion and supplying a wide range of input voltages from 2.7V to 27V and output voltages from 0.6V to 10V. The IC can deliver up to 10V and 3A of continuous output current, which makes it ideal for powering loads in mobile applications. Its adjustable overcurrent protection and programmable switching frequency allows to optimize system power dissipation and reduce component count. The device has a fast response loop, which makes it ideal for fast load transients.

Working Principle

LTC3563EDC#TRMPBF uses a synchronous buck architecture, where a switching transistor is used to transfer power from the input to the output, while the energy drawn from the input is regulated by the internal voltage regulator loop. This architecture provides more efficient power conversion compared to traditional linear regulators as it essentially ‘switches the power’ into the output load. In order to regulate the output voltage, the switching transistor is periodically turned on and off. The amount of time it is on is determined by the voltage regulator so that it adjusts the output voltage to the set point.

The internal voltage regulator also provides additional features such as over current protection, thermal overload protection, as well as output voltage slew rate control. The use of a synchronous buck architecture ensures higher efficiency and accurate output voltage regulation over a wide input voltage range and output current range.

Conclusion

The LTC3563EDC#TRMPBF from Linear Technology Corporation is a synchronous buck regulator DC-DC switching IC with a wide range of features and a switching frequency of up to 2Mhz. The device supports input voltages from 2.7V to 27V and output voltages from 0.6V to 10V and can deliver up to 10V and 3A of continuous output current. The use of a synchronous buck architecture ensures higher efficiency and accurate output voltage regulation over a wide input voltage range and output current range. It is well-suited for a wide range of applications including automotive ECU, lithium-ion battery-powered portable devices, high power lighting, telecommunication systems, automotive power systems, point of load applications, and many others.

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