Close
0%
0%

Extra Info: SW3516, SW3518 (DCDC w/ PD3, PPS, QC3)

SW3516, SW3518 Datasheet, Register Map and Schematic

nqtronixnqtronix
Following
Liked Like project

Just one more thing

To make the experience fit your profile, pick a username and tell us what interests you.

Pick an awesome username
hackaday.io/
Your profile's URL: hackaday.io/username. Max 25 alphanumeric characters.
Pick a few interests
Projects that share your interests
People that share your interests

We found and based on your interests.

Choose more interests.

OK, I'm done! Skip
Similar projects worth following
9.4k views
1 comments
5 followers
View Gallery
The SW3516 and SW3518 are quite interesting DCDC step-down converters with support for PPS/ PD3/ PD2/ QC4/ QC3/ QC2/ AFC/ FCP/ SCP/ PE2/ PE1 and SFCP fast charging (+ VOOC for SW3518). They can deliver up to 20V 3A, even on the QC output, which makes it a rare "class B" capable device. The input voltage must be higher than the ouput and can range from 6-40V. You can get them on lcsc and modules on aliexpress. They often use the AON7534 30V 20A 5mOhm N Channel mosfet from A&O, so use 28V input voltage at most.

The general datasheet is available on lcsc, but register maps and schematic description are not. I found images on baidu and them into a pdf. All files are chinese only, use google translate for your phone or some other service which allows you to translate a picture.

I don't plan on designing my own circuit; I just wanted to share the information and files I had.

SW3516.pdf

datasheet from lcsc: https://lcsc.com/products/PMIC-Battery-Management_612.html?q=SW351

Adobe Portable Document Format - 1.70 MB - 12/28/2020 at 17:21

Preview

SW3518.pdf

datasheet from lcsc: https://lcsc.com/products/PMIC-Battery-Management_612.html?q=SW351

Adobe Portable Document Format - 1.70 MB - 12/28/2020 at 17:21

Preview

SW35xx_reg.pdf

register map

Adobe Portable Document Format - 1.91 MB - 12/28/2020 at 17:21

Preview

SW351x_app.pdf

appnote & schematic

Adobe Portable Document Format - 1.46 MB - 12/28/2020 at 17:21

Preview

1.jpg

not affiliated with store, picture taken from: https://www.aliexpress.com/item/4000186077208.html

JPEG Image - 173.32 kB - 12/28/2020 at 17:21

Preview

View all 8 files

Enjoy this project?

Share

Discussions

Matthew wrote 12/06/2024 at 20:39 • point

Thanks for this. I'd found these modules for a powerbank project and will try to use the register maps to communicate with them.

  Are you sure? yes | no

Similar Projects

In many of my projects I have needed an efficient, reliable regulator and above all that can withstand high voltages and thus allow acceptab
Project Owner Contributor

LM2576 REGULATOR

electronicabcElectronicABC

A basic demonstration of Op Amp as Differential Amplifier
Project Owner Contributor

RGB LED control with Op Amp and ADXL335

rudra-ladRudra Lad

An analog computer for solving sets of Lorenz attractor differential equations
Project Owner Contributor

Analog Lorenz Attractor Computer

cheeennppCheeenNPP

A one-shot timer based on the 555. It features: optional voltage regulator, adjustable output, pamp output buffer.
Project Owner Contributor

One-Shot using 555

drfredDrFred

Does this project spark your interest?

Become a member to follow this project and never miss any updates

Going up?

About Us Contact Hackaday.io Give Feedback Terms of Use Privacy Policy Hackaday API

© 2025 Hackaday

Yes, delete it Cancel

Report project as inappropriate

You are about to report the project "Extra Info: SW3516, SW3518 (DCDC w/ PD3, PPS, QC3)", please tell us the reason.

Send message

Your application has been submitted.

Remove Member

Are you sure you want to remove yourself as a member for this project?

Project owner will be notified upon removal.