Lithium battery charging and discharging board, 5V0.5A charging and discharging, input can resist 40V surge
- 2023-05-12 15:03:59
- lu Original
- 245
1 Circuit board PCB description：
1.1 Name ： Lithium battery charging and discharging board, 5V0.5A charging and discharging, input can resist 40V surge
1.2 Applications ： Convenient charging devices, etc.
1.3 Battery pack ： 3.7V lithium battery pack, multiple parallel or single series connection, full 4.2V(Light up LED2when charging, light up LED1 when charging)
1.4 Input ： USB type C 5V， Charge Current 500mA
1.5 Output ： 5V voltage, current upto 500mA (3.7V lithium battery voltage)
1.6 Introduction to Chip Functions ：
1， B lithium battery charging circuit：PW4057
PW4057 is a single lithium battery charging management chip, integrated OVP overvoltageprotection, input voltage withstand 28V, up to 0.5A charging current
OVP function： 1， Misplaced high voltage protection 2， USB Hot SwapProtection， 3， Abnormal high voltage protection fordamaged fast charger.
2， C boost output chip circuit：PW5100-50
PW5100-50, inputvoltage 0.7V-5V, output fixed 5V, output current up to 500mA (3.7V input),static current 10uA.
3， A lithium battery protection circuit：PW3230
PW3230 is a l ithium battery charging and discharging protection board chip, withouta single peripheral component.
2， Circuit diagram ：
3 ， PCB diagram and 3D display diagram
4 ， BOM Material List .
|
Comment |
Designator |
Quantity |
|
0603 4.7UF 16V |
C2 |
1 |
|
0603 10UF 16V |
C3 |
1 |
|
0603 4.7nF 16V |
C4 |
1 |
|
0603 22UF 16V |
C5, C6 |
2 |
|
0420 Integrated molded inductor 6.8UH |
L1 |
1 |
|
0603 LED Red |
LED1 |
1 |
|
0603 LED Green |
LED2 |
1 |
|
0603 2K 1% |
R1 |
1 |
|
0603 330R 5% |
R2 |
1 |
|
0603 0.5R 5% |
R3 |
1 |
|
0603 5.1k 1% |
R4, R5 |
2 |
|
PW4057 PWCHIP |
U2 |
1 |
|
PW3230 PWCHIP |
U3 |
1 |
|
PW5100-50 PWCHIP |
U4 |
1 |
