RY3730-Constant current driven LED lighting with charging

As the title shows, the author made such a board in order to use up the RY3730 constant current driver chip and IP2312 lithium battery charging chip on the handle, and even used up the previously printed acrylic board (

Product introduction

Small LED lighting lamp with lithium battery charging, using constant current drive scheme, 2 in parallel and 8 in series. The circuit is relatively simple.

Application scenarios

Daily lighting, emergency lighting, bedside lamp...

product advantages

1. It uses an IP2312 charging chip and 5V2A DCDC charging. Compared with the traditional TP4056, it reduces heat, improves efficiency and shortens charging time.
2. RY3730 constant current solution, 2 in parallel and 8 in series, about 24V, can ensure that the brightness of each lamp is relatively consistent and increase the life span.
3. With switch control

Show pictures

Assembly instructions

The BOM list of the basic original parts has been proofread and can be placed directly. For additional components, please refer to the following.

Additional device purchase address

Back heat sink: https://item.taobao.com/item.htm?spm=a1z09.2.0.0.62f62e8dVWw9hp&id=646793338984&_u=t2dklb45f1de

(Please select "Slotted groove 20*20*6 black with 10 blue stickers")

Copper pillar: https://item.taobao.com/item.htm?spm=a1z09.2.0.0.62f62e8dVWw9hp&id=674767797774&_u=t2dklb45457d

(Please choose dual-pass M3*15 (10 pieces))

https://item.taobao.com/item.htm?spm=a1z10.3-cs.w4002-24431597774.19.53a368f9V5LAU5&id=675421103661

(Please choose M3*5+6 (10 pieces))

Screws: https://item.taobao.com/item.htm?spm=a1z09.2.0.0.bffb2e8dTkKLwy&id=555264648393&_u=t2dklb45e844

(Please choose PM3*5MM)

Battery: https://item.taobao.com/item.htm?spm=a1z09.2.0.0.7fee2e8dQdQ1Qf&id=582093265312&_u=t2dklb45e6ce

(Please choose 2500mah (70*55*5mm with protective plate, remember to note "xh2.54 plug")

Acrylic assembly

Refer to "Acrylic Drawing" in the documentation

Welding instructions

The lamp beads are solder pads on the bottom and are relatively fragile. Please do not expose them to high temperatures for a long time. Welding with a soldering iron is not recommended! !