Author Topic: Could you help me ID a component on a LiPo protection board?  (Read 763 times)

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Offline TT_VertTopic starter

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Had this in beginners area but got not bites so perhaps it was the wrong forum?

This is for a 1S LiPo I am using for a project in the shed.



First let me apologize for my schematic, I've never really drawn one and I know looking at it will trigger a good many of you.  The component is a SOT-26 and the marking was y1ig (Removed from PCB in pic and is marked U1 on the solder mask).  I didn't draw in all of those 6 other chips (Also not able to find data on those based on markings) as they are all wired in parallel so I only drew in one.  U1 is the component in question and I think it's a MOSFET and i feel it may be this one .  Of course the # on the PCB comes back to nothing either.  I "assume" that pin one is on the side o U1 w/ the line and if so pin 5 (Drain2) of this chip is not in use.



Thanks much guys



Dave
 

Offline fzabkar

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Re: Could you help me ID a component on a LiPo protection board?
« Reply #1 on: June 13, 2022, 02:26:09 am »
This IC matches the pinout:

DW01A, H & M semi, Protection IC for One-Cell Lithium-Ion / Lithium-Polymer Battery Pack, SOT-23-6:
https://hmsemi.com/downfile/DW01A.PDF

These also have the same pinout:

S-8261 Series, Ablic, lithium-ion / lithium polymer rechargeable battery protection IC, SOT-23-6:
https://www.ablic.com/en/doc/datasheet/battery_protection/S8261_E.pdf

AP9101C, Diodes Inc, protection IC developed for lithium-ion/lithium polymer rechargeable battery, SOT26:
https://www.diodes.com/assets/Datasheets/AP9101C.pdf

FS312F-G, Fortune Semiconductor, lithium-ion/polymer battery protection, marking 312F, SOT-23-6:
https://www.ic-fortune.com/upload/Download/FS312F-G-DS-12_EN.pdf

https://www.jscj-elec.com/gallery//file/CJDW01A%20Rev-1.0%20.pdf (CJDW01A)

https://www.ecmos.com.tw/wp-content/uploads/2022/02/EC9523.pdf (EC9523)

http://st.semi-star.com/3/30342d76071d4e2a3866b5aff3276fc3.pdf (SSC5918)

If you want to keep looking ...

https://ipv4.google.com/search?q=filetype%3Apdf++lithium+%22battery+protection+ic%22+%22sot23-6%22+OR+%22sot-23-6%22+OR+%22sot26%22
« Last Edit: June 13, 2022, 04:36:39 am by fzabkar »
 

Online Peabody

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Re: Could you help me ID a component on a LiPo protection board?
« Reply #2 on: June 13, 2022, 05:01:23 am »
And the other six chips - the Q chips - are very likely the FS8205A, which is a dual N-channel mosfet.
 

Offline fzabkar

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Re: Could you help me ID a component on a LiPo protection board?
« Reply #3 on: June 13, 2022, 05:58:31 pm »
The dual MOSFETs look like Alpha & Omega parts, maybe AO8810.

AO8810, Alpha & Omega, Common-Drain Dual N-Channel MOSFET, 20V, 7A, 20mOhm RDSon, TSSOP8:
http://www.aosmd.com/pdfs/datasheet/AO8810.pdf
 

Offline TT_VertTopic starter

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Re: Could you help me ID a component on a LiPo protection board?
« Reply #4 on: June 23, 2022, 12:32:42 am »
Thank you all for the info.
 


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