张小哥

lm5118

Overview

This design is a step-up and step-down module, using LM5118 to control the MOS tube to convert the step-up circuit and the step-down circuit. The design input of this design is 12V-24V and the output is a fixed 18V. The output voltage can be changed by changing the voltage division ratio of the three resistors R8, R9, and R10. The MOS can choose the same type of N-channel MOS tube according to the output requirements.

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-06-21 05:18:30

Dual Limit Comparator (Window Comparator) Circuit
[size=5] The circuit consists of two LM339s forming a window comparator. When the compared signal voltage Uin is between the threshold voltages (UR1UR2 or Uin Dual Limit Comparator (Window Comparator)
Portable hypoxia monitoring circuit
As shown in the figure, this is a portable hypoxia monitoring circuit. The circuit consists of oxygen sensor OS-12, DC amplifier IC1, A/D converter IC4, LCD F2100-34PI, voltage comparator IC2, positiv
Smart Energy Metering System Based on ADE7757 (DIY Complete)
My DIY is basically finished, and I will take some time to show off my work later. . .[[i]This post was last edited by zhaojun_xf on 2011-8-8 13:49[/i]]
A perpetual calendar program
I made a perpetual calendar program. When adjusting the year, month, day, hour, minute, and second, errors occasionally occur. For example, some unwanted decimal characters such as H6 and H7 appear. W
EEWORLD University - How to design power integrity: Finding power transmission noise problems
How to Design for Power Integrity: Looking for Power Delivery Noise Issues : https://training.eeworld.com.cn/course/4384This video provides an understanding of how the voltage regulator module (VRM) i
If you urinate on a 380V high voltage wire (live electricity), will you be electrocuted? Will urine become a conductor and carry electricity, giving you an electric shock?
Reprinted from: Institute of Physics, Chinese Academy of Sciences We all know that electricity is very dangerous. The safe voltage for the human body under dry conditions is only 36V, and the industri

Datasheet More

Circuits More