USB input with 6.1V overvoltage off, 40V voltage protection, 4.35V lithium battery 0.5A charge management board
- 2023-05-12 15:11:33
- lu Original
- 202
1 Circuit boardPCB description：
1.1 Name ： USB input with 6.1V overvoltage off, 40V voltageprotection, 4.35V lithium battery 0.5A charge management board
1.2 Applications: Convenient charging devices, etc.
1.3 Battery pack: 3.7V lithium battery pack, multiple parallel or singleseries connection, full 4.35V
1.4 Input voltage: 5V（ When charging, the light will be on, and when it is fully charged, thelight will turn）
1.5 Max charging current ： 0.5A
1.6 Introduction to Chip Functions：
1， Lithium battery charging circuit：PW4065A
PW4065A Lithium battery chargemanagement chip， Up to 0.5A charging current， support single series 4.35V high voltagelithium battery charging
2， Overvoltage protection circuit：PW2606B
PW2606B is a USB input overvoltage protection chip, Input overvoltage 6.1V shutdown, 40V inputwithstand voltage, overcurrent 1A protection
Function： 1， Misplaced high voltage protection 2， USB Hot SwapProtection， 3， Abnormal high voltage protection fordamaged fast charger.
2， Circuit diagram ：
3 ， PCB diagram and 3D display diagram
4 ， BOM Material List .
|
Comment |
Designator |
Footprint |
Quantity |
|
0603 50V 1uF |
C1 |
0603A |
1 |
|
0603 16V 1uF |
C2 |
0603A |
1 |
|
0603 16V 10uF |
C3, C4 |
0603A |
2 |
|
0603 LED Green |
LED1 |
0603A |
1 |
|
0603 LED Red |
LED2 |
0603A |
1 |
|
0603 1% 5.1K |
R1, R2 |
0603SL |
2 |
|
0603 5% 1K |
R4 |
0603SL |
2 |
|
0603 1% 2.2K |
R3 |
0603SL |
2 |
|
PW2606B |
U1 |
SOT23-6 |
1 |
|
PW4065A |
U2 |
SOT23-6 |
1 |
|
USB TYPE C 16PIN |
USB1 |
USB |
1 |
