LT3692AHFE#TRPBF

LT3692AHFE#TRPBF Application Field and Working Principle

Introduction:

The LT3692AHFE#TRPBF is a member of the LT3692 family of synchronous step-down switching regulators. In this series, high-efficiency DC/DC converters are provided with adjustable and fixed output voltages. It provides an internal, high-side and low-side N-Channel MOSFET switch. This component also features an additional control input for power sequencing. It is suitable for applications such as digital TVs, desktop and mobile systems, and mobile device power management.

Application Field

The LT3692AHFE#TRPBF is a step down switching regulator for forms of power management within system boards, desktop and mobile systems, and voltage rails for digital TVs and mobile devices. It’s main feature is that it is designed to be programmable and allow users to customize their power management needs. Additionally, the LT3692AHFE#TRPBF offers customizable device sequencing and protection options, with up to 4000mA of output current and adjustable output voltage. The wide input voltage range of 10V-60V makes it suitable for applications that require the use of both regulated 5V and regulated 3.3V rails.

Working Principle

The LT3692AHFE#TRPBF works by switching its output on and off at a fixed frequency and duty cycle. The voltage regulation loop within the chip will adjust the duty cycle accordingly to ensure the voltage being supplied is consistent. Inside the device, an error amplifier senses the difference between the output voltage and a reference voltage, and provides a signal to the internal PWM module. The PWM module then adjusts the duty cycle of the output switch accordingly. In order for the regulator to maintain a regulated output voltage, the frequency must be placed within a certain range and the duty cycle must be varied in order to accommodate changes in the input voltage. The high-side and low-side switches of the LT3692AHFE#TRPBF are low Rds(ON) N-Channel MOSFETs, allowing for better efficiency and higher output current. The N-Channel MOSFETs also provide a low-noise, low-ripple switch that can be used in high-power applications.

Conclusion

The LT3692AHFE#TRPBF is part of a family of synchronous step-down switching regulators that is designed for power management solutions and voltage rails in desktop and mobile systems. It includes various customizable device sequencing and protection options, and has an adjustable output voltage and wide input voltage range. The LT3692AHFE#TRPBF uses an error amplifier to sense the difference between the output voltage and a reference voltage, and then adjust the duty cycle in order to maintain a steady output voltage. It also features an internal, low Rds(ON) high-side and low-side N-Channel MOSFETs that allows for higher efficiency and higher output current.