LT3467AEDDB#TRMPBF

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LT3467AEDDB#TRMPBF Application Field and Working Principle

LT3467AEDDB#TRMPBF is a voltage regulator (PMIC) for regulating Direct Current (DC) to Direct Current (DC). The voltage regulator is specially designed for applications that require a high level of efficiency, making it an ideal option for power conversion in notebook computers, server blade power supplies, and other computing systems. In addition, it allows for a wide input voltage range, from 0.5V to 25V, while limiting the maximum output current of 10A.

Operation Principle

The LT3467AEDDB#TRMPBF is a monolithic switching DC-DC regulator that combines a synchronous step-down converter and an internal adjustable linear regulator. The switching regulator is based on a variable duty cycle, quasi-resonant or fixed frequency architecture, depending on the application. The variable duty cycle architecture ensures operation at high efficiency over a variety of loads, while the linear regulator ensures an output voltage that is stable and adjustable.The device converts an input voltage at VIN to a regulated output voltage at VOUT. It operates by transferring power between its input and output, with the device\'s internal high-frequency power switches, inductor, and voltage adjust circuit. The device can be operated in either a PWM (pulse-width modulation) or low-side PWM mode, depending on the application. This operating mode is chosen by setting the proposed PWM pin to either P_SENSE\\ or P_SENSE./During operation, the internal MOSFETs are driven by the internal oscillator circuit, creating an oscillating voltage. The internal regulator circuit then uses this voltage to control the duty cycle of the MOSFETs based on the desired output voltage. The duty cycle of the MOSFETs is adjusted to achieve an output voltage that is stable and adjustable. The frequency of the oscillator circuit and the duty cycle of the MOSFETs both depend on the output voltage, so that a higher output voltage requires a higher duty cycle, while a lower output voltage requires a lower duty cycle.

Applications

The LT3467AEDDB#TRMPBF is mainly used in computing systems, such as notebook computers and server blade power supplies. It offers low output noise and ripple over a wide input voltage range, from 0.5V to 24V, enabling it to reliably regulate power supplies in these applications. Additionally, its compact 8-lead MSOP package and 0.65µA operating quiescent current reduce overall power consumption in these systems. Its adjustable output voltage, from 0.59V to 5.5V, allows for flexibility in system design, enabling the designer to choose an optimal output voltage for the application.The LT3467AEDDB#TRMPBF has a low output voltage ripple of 2.25mV, making it ideal for applications where noise sensitive circuitry is present. It also offers a high power efficiency of up to 95%, ensuring that the system is using the most energy possible while reducing the system\'s overall power consumption.Finally, the LT3467AEDDB#TRMPBF also features an integrated circuit breaker that protects against overloads, enabling it to safely handle output currents up to 10A. This makes it suitable for both low-power and high-power systems.

Conclusion

The LT3467AEDDB#TRMPBF is a monolithic switching DC-DC regulator that combines a synchronous step-down converter and an adjustable linear regulator. It offers a wide input voltage range and adjustable output voltage, with minimal noise and ripple, and achieves high efficiency up to 95%. It is suitable for applications such as notebook computers and server blade power supplies, and offers protection against overloads. In summary, the LT3467AEDDB#TRMPBF is a perfect solution for systems requiring high-level power conversion efficiency.

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