LiPo Charge/Protect/5V Boost Circuit

Ongoing

STD LiPo Charge/Protect/5V Boost Circuit

License: Public Domain

Mode:

Editors' pick

Update time： 2019-05-19 17:56:49

Creation time： 2019-05-11 12:04:07

Description

This project originates from the one of Great Scott https://www.youtube.com/watch?v=Fj0XuYiE7HU. Purpose of the modification is to add a toggle switch instead, an auto-kill feature, and a parallel power supply where it is connected to the usb.

Design Drawing

schematic diagram

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LiPoChargeProtectBoost
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LiPoChargeProtectBoost_1
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SwitchDiodes
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PCB

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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	FS312F-G	U1	SOT-23-6	1
2	MICRO USB	USB1	MICRO-USB-1	1
3	Toggle Switch	SW1	SW5-2.0-8.8X4.4X4.7MM-90D	1
4	TP4056	U2	SOP-8_EP_150MIL	1
5	1k	R1,R3,R4	0603	3
6	22uF	C1,C2	1812	2
7	10u	C3	0603	1
8	Red(0603)	LEDR	LED-0603	1
9	19-217/GHC-YR1S2/3T	LEDG	LED-0603	1
10	7.5k	R2	0603	1
11	5V	5V,BUTTON_STATE,CONTROL,CHARGE_STATE,ANALOG_BATTERY	HDR-1X1/2.54	5
12	FS8205	Q1	SOT-23-6	1
13	2k	R5,R7	0603	2
14	BAT+	BAT+	HDR-1X1/2.54	1
15	100	R6	0603	1
16	0.1u	C4	0603	1
17	BAT-	BAT-	HDR-1X1/2.54	1
18	GND	GND	HDR-1X1/2.54	1
19	MT3608	U4	SOT-23-6	1
20	SS34	D1,D2,D4	SMA(DO-214AC)	3
21	22uH	L2	774	1
22	10k	R8,R9,R10,R11,R12,R13,R14,R15,R16	0603	9
23	EVQ22705R	SW2	KEY-6.0*6.0-4	1
24	MMBT3904	VT1	SOT23-3	1
25	WSP4805	Q3	SOP-8_150MIL	1
26	100k	R18	0603	1
27	MBR0520LT1G	D3	SOD-123	1
28	2N3904	Q2	TO-92(TO-92-3)	1
29	10m	R17	0603	1
30	PULSE(0 5 5s 1u 1u) AC 0	V1	HDR1X2	1
31	5 AC 0	V2	HDR1X2	1
32	PULSE(0 5 1n 1n 1n 0.5s 1s) AC 0	V4	HDR1X2	1