Schematic diagram of a simple TWS charging box consisting of a common LTH7 charging chip + lithium battery boost and protection

kuake0618

Schematic diagram of a simple TWS charging box consisting of a common LTH7 charging chip + lithium battery boost and protection [Copy link]

 

LTH7-PW4054 lithium battery charging circuit;
PW5100-5V lithium battery boost circuit;
PW3133A lithium battery protection board circuit.

TWS charging box schematic diagram:

The PCB file of the simple TWS charging box composed of LTH7 common charging chip + lithium battery boost and protection: PW5100，PW3133A,PW4054的TWS.rar (1.39 MB, downloads: 27)

2020-8-27 17:19 上传

点击文件名下载附件

The circuit is very simple, you can download it according to your needs.

PCB file screenshot:

okhxyyo

Thanks for sharing, this is good stuff

qwqwqw2088

The board is too big.

What do the 5 holes next to the 3.3uH inductor mean? Is it for heat dissipation?

The TWS charging box doesn't feel that big

okhxyyo

qwqwqw2088 posted on 2020-8-27 20:41 The board is too big. What do the five holes next to the 3.3uH inductor mean? Is it for heat dissipation? The TWS charging box doesn't seem to be that big.

I didn't see the size, maybe the picture is enlarged

kuake0618

qwqwqw2088 posted on 2020-8-27 20:41 The board is too big. What do the 5 holes next to the 3.3uH inductor mean? Is it for heat dissipation? The TWS charging box doesn't seem to be that big

There are 2 lines on the back, which are the holes.

kuake0618

okhxyyo posted on 2020-8-28 06:44 I didn’t see the size, maybe the picture is enlarged

You can roughly know the size of the USB port by looking at it. This is already very small. The length of the 3 USB mirco Android charging port

dcexpert

This doesn't support magnetic suction.

wlsg528

I started to accumulate TWS knowledge. Thanks LZ for sharing.

小何SDF

Thanks for sharing!

小何SDF

Thanks for sharing!