LTC3831IGN#TRPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Controller, DDR
Voltage - Input:	3 V ~ 8 V
Number of Outputs:	1
Voltage - Output:	1.27 V ~ 4 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Supplier Device Package:	16-SSOP
Base Part Number:	LTC3831

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LTC3831IGN#TRPBF: Overview, Application and Working Principle

The LTC3831IGN#TRPBF is a constant frequency, high efficiency synchronous buck regulator with current mode control operating in the range of 8.5V to 18V input voltage range. It is specifically designed for industrial, broadcast, telecommunications, and server/storage applications. This regulator offers high efficiency at low voltages, fast transient recovery times and superior thermal performance. This innovative device has on-board compensation and integrates a power train architecture that reduce external component count and PCB size.

Overview

The LTC3831IGN#TRPBF is a monolithic switching regulator for DC/DC conversion. It is convenient, powerful and cost-effective. This regulator is a high efficiency synchronous buck regulator, operating from 1.25V up to 18V input voltage range and providing an adjustable output of 0.8V to 75% of the input voltage. It includes all the features required to achieve high performance and reliable operation, including fast transient recovery, soft start, cycle-by-cycle current limit and over-temperature protection. The LTC3831IGN#TRPBF also includes an integrated low resistance MOSFETs to ensure exceptional efficiency and thermal performance. This device also has an integrated low RDS (ON) synchronous rectifier for an additional RFI benefit, reducing the need for external switches and cables. The LTC3831IGN#TRPBF is available in 10-pin, 12-pin and 24-pin packages to suit various application needs.

Application Field

The LTC3831IGN#TRPBF is suitable for a wide range of applications, including process control, HVAC systems, industrial power supplies, telecom power supplies, energy storage systems, automotive and automotive-related systems, industrial datacom and consumer products. In terms of communications systems, this regulator is often used to provide power conversion for high current applications, such as Ethernet transceivers, routers and switches. Because of its high efficiency and high current handling capability, this device can also be used for consumer products such as external- and portable-applications, medical devices and consumer entertainment equipment.

Working Principle

The LTC3831IGN#TRPBF is a synchronous buck regulator with current mode control and internal power MOSFETS. The device is controlled by a single loop compensation network, which is designed for a wide input voltage range and a wide output voltage range.The switching frequency is internally adjustable from 300kHz to 2.2MHz and only requires a resistor/capacitor (R/C) network to set the frequency. The fixed frequency current mode control provides fast transient response and cycle-by-cycle current limit. It also enables the use of a low noise external compensation network and delivers ultra fast transient recovery times of less than 500ns. In summary, the LTC3831IGN#TRPBF offers a high efficiency, fast transient response and superior thermal performance. It is an ideal solution for industrial, broadcast, telecommunications, server/storage, and consumer applications. It is available in 10-pin, 12-pin and 24-pin packages, making it an ideal choice for any application where high power and robust performance are required.

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