LTC3838EUHF-1#TRPBF

The LTC3838EUHF-1#TRPBF is a high performance dual output synchronous buck controller, designed primarily for Intel\'s IMVP7 and AMD\'s IMVP-8 mobile processor cores. The device allows the design of simple, high efficiency power solutions with features such as adjustable Output Voltage, voltage sequencing,/soft-start. The LTC3838EUHF-1#TRPBF synchronous buck controller is ideal for applications where advanced features, high efficiency and small size are desired.

Application Field

The LTC3838EUHF-1#TRPBF synchronous buck controller is ideal for use in applications such as notebook computers, cell phones and other mobile computing devices that require dual output voltage control. It is also well-suited for applications such as power supplies for telecom/networking equipment, PLCs, and industrial and consumer electronics.

Working Principle

The LTC3838EUHF-1#TRPBF synchronous buck controller operates using a Pulse-Width Modulated (PWM) regulation scheme. It is designed with a voltage feedback circuit to sense the output voltage of the regulator, compare it to its programming voltage and adjust the on-time of the MOSFETs accordingly. When the input voltage is greater than the output voltage, the on-time for the low side MOSFET is increased to divert more current from the input supply in order to decrease the output voltage. Conversely, when the input voltage is less than the output voltage, the on-time for the low side MOSFET is decreased, allowing less current to flow from the input supply in order to increase the output voltage.

Additionally, the LTC3838EUHF-1#TRPBF synchronous buck controller features integrated current limit protection and thermal shutdown. The current limit protection is designed to limit both peak inductor current and average current when the output voltage is set to shut off when the power dissipation reaches a pre-set limit. The thermal shutdown prevents both parts of the LTC3838EUHF-1#TRPBF when the junction temperature reaches 150 C, protecting against degradation or total failure of the device due to excessive heat.

The LTC3838EUHF-1#TRPBF also includes an adjustable soft-start circuit. This circuit is designed to limit the inrush current during start up and allows for an adjustable rise time for the output voltage. This feature is used to prevent output transients during startup.

In summary, the LTC3838EUHF-1#TRPBF synchronous buck controller is a highly-efficient switch controller for dual output control applications. It is ideal for applications that require high efficiency, advanced features and small size. The controller includes features such as voltage sequencing and soft-start, current limit and thermal shutdown protection, making it ideal for use in a variety of applications and providing the user with a efficient and reliable power solution.