TP4056 - Lithium Battery Charger with 3.3V OUT and protection

1 year ago 977
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TP4056 lithium battery charger with a switchable output between 3.3v and 4.2v (Battery volage).

The LDO only draws 50uA (instead of others which are normaly used in Arduinos and so on with around 10mA), so the battery will last much longer. I build this to run my NodeMCU directly via 3v3 PIN instead of VIN. VIN or USB goaes via the onboard LDO which is a pretty bad one, it draws around 10mA for the conversion.

Only downside of the LDO on this boaord is the drop-out-voltage which drops down at cirtain point depending on the current draw. Next version will get a bypass, when the dropout is reached it will automatically switch to the batery output.



TP4056 - 03962A Lithium Battery Charger copy


TP4056 - 03962A Lithium Battery Charger with sense


ID Name Designator Footprint Quantity Mounted
1 TP4056 U1 SOP-8_EP_150MIL 1 Yes C16581
2 1KΩ R1,R2,R6 0603 3 Yes C22548
3 1.2KΩ(122) R3 0603 1 Yes C174261
4 DW01A-G U2 SOT-23-6 1 Yes C61503
5 100Ω(100R) R4 0603 1 Yes C139043
6 micro 5PBoard5.9 USB2 MICRO-USB-1 1 Yes C40953
7 Pad 01 IN+ CON_PAD_SQUARE_32MIL 1 Yes
8 Pad 02 IN- CON_PAD_SQUARE_32MIL 1 Yes
9 Pad 06 OUT- CON_PAD_SQUARE_32MIL 1 Yes
10 Pad 05 BAT- CON_PAD_SQUARE_32MIL 1 Yes
11 Pad 04 BAT+ CON_PAD_SQUARE_32MIL 1 Yes
12 AP2112K-3.3TRG1 U3 SOT-25 1 Yes C51118
13 Pad 07 OUT+ CON_PAD_SQUARE_32MIL 1 Yes
14 HQ19-2232BGC LED1 LED-0603_X2 1 Yes C154471
15 100nF C4,C2 0603 2 Yes C24452
16 10uF C3 0603 1 Yes C92487
17 SC12P-AVR SW1 SC12P-AVR 1 Yes C240300
18 FS8205A Q1 TSSOP-8_3X4.4X065P 1 Yes C16052
19 TPS3780BQDBVRQ1 U4 SOT-23-6 1 Yes C131970
20 4.7KΩ R5 0201 1 Yes C25836
21 10KΩ R7 0805 1 Yes C17414
23 MMBT2222A Q2 SOT-23(SOT-23-3) 1 Yes C181121
24 Pad 09 ACT CON_PAD_SQUARE_32MIL 1 Yes
25 100KΩ R8 0402 1 Yes C25741


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Comments (1)

Arun karan Reply

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