Key facts
- Brand
- Linear Technology
- Model
- LT3800
- Category
- Power Management
- Documents
- 2
- Languages
- EN
- Last added
- 2023-10-17
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Linear Technology LT3800 Demonstration Circuit 720 Quick Start Guide
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.
Read onlineLinear Technology LT3800 specifications
| Output Voltage | 12V |
|---|---|
| Output Current | 6.25A |
| Power | 75W |
| Switching Frequency | 200kHz |
| Output Voltage Ripple | ~50mV |
Source: Linear Technology LT3800 Demonstration Circuit 720 Quick Start Guide
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The shortest path to a working setup, usually only a few pages.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
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.
From: Linear Technology LT3800 Demonstration Circuit 720 Quick Start Guide
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.
From: Linear Technology LT3800 Demonstration Circuit 720 Quick Start Guide
What is the input voltage range of the LT3800?
The LT3800 operates from 4 V up to 60 V input.
From: Linear Technology LT3800 High-Voltage Synchronous Current Mode Step-Down Controller Datasheet
What is the typical operating frequency?
The controller runs at a fixed 200 kHz frequency.
From: Linear Technology LT3800 High-Voltage Synchronous Current Mode Step-Down Controller Datasheet