Charger IC - YX8183 (YX8182)

Using Arduino General Electronics
1

Hi

I plan to use YX8183 for charging my LiPo from solar.
This chip is used in "all" china garden light, I have one myself and it work and works.

I have made a prototype and when charging I only get 0.017 mA when measuring amps with a multimeeter, both prototype and "china model".

Any of you with experience with this chip?

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Datasheet is not very informative: here is the google translated sheet:

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Here's the translation of the document content from Chinese to English:

SHININGIC
YX8183
May 2014 - REVISED Dec 2019

Solar Powered LED Driver

Features:
• Input voltage range: 2.7V to 4.2V
• Efficiency up to 95%
• Over-discharge protection
• Over-voltage protection
• Low operating current
• Constant current output characteristic, suitable for LED series connection
• Maximum 600mA solar charging current
• 0V battery activation
• LED current can be adjusted (0-400mA)
• Available in SOP8 and DIP8 packages

Description:
YX8183 is a solar-powered LED driver control chip suitable for solar garden lights and other solar-powered LED products.

YX8183 integrates LED constant current driver circuit, solar charging (over-discharge protection and over-voltage protection) circuit, and other protective circuits. It has high conversion efficiency, up to 95%, which can significantly extend the working time of solar garden lights and other products.

YX8183 uses three external MOS tubes in SOP8 and DIP8 packages, which can effectively reduce PCB board space.

YX8183 can work from -40°C to +85°C.

Typical Application:

Application Range:
• Suitable for solar garden lights and other solar-powered LED applications
• Landscape lighting
"Fig. 1. Typical Application Circuit"

HiveMon Rs 0,3 ohm
Led changed to 1k resistor

Ver1.0

SHININGIC YX8183
May 2014 - REVISED Dec 2018

Ordering Information

Part Number Order Number Package Storage Temp Package Description Packaging Remarks
YX8183 YX8183S08NR SOP8 -65°C to +125°C Tape and Reel
YX8183 YX8183S08NT DIP8 -65°C to +125°C Tube

Pin Information
SOP/DIP8

Table 1. Pin Description

SOP, DIP8 Pin Number Name Pin Function Description
1 LX Switching Pin
2 CDS Light Detection
3 EN Enable/Disable
4 SOL Solar Panel Connection
5 BAT Battery Positive
6 MOD Mode selection: MOD connected to BAT for 2V/3.2V battery, MOD connected to GND for 3.7V battery
7 GND Ground
8 FB Feedback Input

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2

Useful info here:
https://www.reddit.com/r/BigCliveDotCom/comments/12z1w9c/solar_shedlight_teardown_with_schematic/

1 Like
3

I have seen it, Clive is a good man.

It dos not solve my problem with charging, I struggle to get my 300 mA.

Maybe you can shed some light on Rs (FB resistor), is that only for setting LED current?

4

What part values are in the functional garden light you have?

Maybe start with those values, verify operation, and then vary values one at a time to see the effect.

1 Like
5

Thanks for help!

I found a "small" mistake, I had anode/cathode on LED turned... and then placed it to GND, not SOL+, and if that is not enough, i placed Rs (1 ohm) in wrong holes.... and even pin 3 wrong to ground.... High5!!!

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I also realized I dont need LED, I only need to charge a LiPo:
Here is "new" breadboard:

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Anyway, it charges with only 82mA, datasheet states 600 mA. So I may have some other issues to investigate.

6

You could add two more 1ohm resistors for Rs.
Anyway, no word about your solar panel, how does it look like...?

7

Like china...
no1: ca 17x10
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no2: ca 12 x 9
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8

Rs is for ILED, I dont need led, I only need to charge, I may need Rs, is it 3 ohm or 0.3 you suggests?

By the way, I tested with power supply, 6V CC 700mA

9

0.3ohm in parallel.
Max input from panel is 4.2V if I understood anything from specs..

10

True, but my old datasheet 8182 stated 6v.... So tomorrow I will test with 4V

11

Who knows... If that chip doesn't regulate voltage, you give panel voltage directly to battery... 6V not good. Neither much lower than 4.2.

12

Garden LED light
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13

Measure panel input voltage and battery charge voltage under sun exposure.

14

Shure, today rain, and next 4-5 days.... :frowning:

1 Like