LTC3547BIDDB#TRMPBF

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The LTC3547BIDDB#TRMPBF is a monolithic dual-channel synchronous step-down switching regulator with integrated power switches. It offers low noise, high efficiency and integrated power MOSFETs and operational amplifier stages, enabling a wide range operating conditions. The LTC3547BIDDB#TRMPBF is a highly integrated solution to a wide range of switching regulator applications.

Application Field

The LTC3547BIDDB#TRMPBF is ideally suited for powering multiple loads within mixed-signal digital and analog applications, ranging from automotive to industrial and consumer. More specifically, the unit can be used in battery-powered telecommunication mechanisms, point-of-load power-supply solutions and portable devices such as smartphones and tablets. This application field can also be extended to medical- and industrial-grade solutions, networking systems and smart home/building products.

Working Principle

The LTC3547BIDDB#TRMPBF has two synchronous step-down buck channels featuring switch currents up to 2A each. The Buck channels offer input voltage up to 34V and supports output voltages down to 0.6V; for each independent channel the output voltage can be programmed to limit the amount of power it dissipates. The LTC3547BIDDB#TRMPBF implements advanced loop compensation to quickly achieve stable operation. Additionally, it has several safety and protection mechanisms to keep the system running while safely operating at extreme conditions. The switching can be controlled externally using PWM, allowing fine control, with a maximum frequency of 250kHz.

The system’s power loss is reduced and efficiency enhanced by integrated rDS(on) power MOSFETs and low-resistance inductors, while the low output voltage ripple can be attributed to the low-noise operational amplifier stages.

Overall, the LTC3547BIDDB#TRMPBF employs the latest technology and offers a high degree of integration and a wide input voltage range, enabling its use in a wide range of demanding applications.

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