Linear Technology LT3800 Demonstration Circuit 720 Quick Start Guide

This file introduces the application characteristics of the LT3800 high voltage synchronous step-down controller, including working principle, application scenarios, working modes and circuit design.

Brand: Linear Technology
Category: Power Management
Document type: Quick Start Guide
Language: English
Pages: 3
File format: PDF
File size: 443 KB
Published: 17 October, 2023
Updated: 17 October, 2023
Model: LT3800
MD5 checksum: 83C07FD05E889CDD4DC720DD3E89784E
PDF: Linear Technology LT3800 Demonstration Circuit 720 Quick Start Guide PDF

About this manual

This document is a Quick Start Guide for Demonstration Circuit 720, which features the LT3800 high voltage synchronous current-mode DC/DC step-down controller. The demonstration board operates from an input voltage range of 20V to 55V and outputs 12V at 6.25A (75W). It includes features such as a soft-start function and selectable operation modes (Burst, Discontinuous, and Continuous Current Mode) via jumpers.

What's inside

Description
Performance Summary
Quick Start Procedure
Measurement Equipment Setup

Specifications

Output Voltage	12V
Output Current	6.25A
Power	75W
Switching Frequency	200kHz
Output Voltage Ripple	~50mV

Frequently asked questions

What is the recommended power supply for testing the LT3800 demonstration circuit?

A 60V/15A rated bench power supply is recommended, with the current limit set to its maximum setting.

How do you select the operation modes on the demonstration board?

The modes of operation, Burst Mode, Discontinuous Current Mode, and Continuous Current Mode, are jumper selectable.

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