LTC3897IUHF#PBF

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LTC3897IUHF#PBF is a highly efficient DC/DC switching controller dedicated for synchronous buck systems. It integrates an ultra-low noise PWM controller and high voltage MOSFET driver. This device encompasses all the features needed to develop low power, efficient, feature rich DC/DC conversion solutions.

Application Field

LTC3897IUHF#PBF operates in multiple switching frequencies of 300kHz to 2MHz, to help lower the number of external components. This device is specifically designed to drive low-side and synchronous high-side Gate drivers in combination with external N-channel MOSFETs. It also has best-in-class protection and sophistication that enables multiple power system implementation.

The device is suitable for a wide range of applications including controllers for notebook PC motherboard and CPU power conversion, servers, xDSL and set-top box. It is also ideal for use in rack controller, medical, sigs and networking equipment.

Working Principle

The working principle of LTC3897IUHF#PBF involves the use of a simplified single current mode pulse-width modulation (PWM) system. This PWM system provides accurate current regulation, allowing the device to provide an extremely clean output voltage waveform. The on-chip oscillator is used to provide the switching frequency.

The device is optimized for high performance and accuracy in switching current regulator applications. It utilizes a DC to DC buck controller with programmable minimum on-time, allowing the designer to better control the output voltage in light load or no-load conditions. The device also offers best-in-class over-current limits and short-circuit protection.

The LTC3897IUHF#PBF provides a high level of integration, making it a cost-effective solution for the design of switched-mode power supplies. The device is optimized to work with a wide range of inductor applications, resulting in improved system performance and enclosure size.

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