PW2312 Buck Circuit board
- 2023-05-12 15:06:58
- lu Original
- 269
1 Circuit board PCB description：
1.1 Name ： PW2312 BuckCircuit board
1.2 Applications: Voltage buck converter board
1.3 VIN input voltage ： 4V-30V
1.4 VOUT output voltage ： 4V， 5V， 3.3V（ TheVIN>VOUT condition must be met）
1.5 Introduction to Chip Functions ：
1， Buck chip：PW2312
PW2312 input voltage is 4V~30V, you can set the constant voltage output voltage value by R1,R2, current up to 1.2A, package SOT23-6.
2， Circuit diagram ：
Note 1： The blue thick line is the power trace, C1,C3 input capacitor and C5,C6 output capacitor must not be omitted. At the same time C1,C3 should be placed next to 5pins, as close as possible..
Note 2： The red thick line is the power ground, the main points of the drawing board: to be wide, the shorter the distance between the connecting loops at each point.
3， PCB diagram and 3Ddisplay diagram
4 ， BOM Material List .
|
Comment |
Designator |
Footprint |
LibRef |
Quantity |
|
100uF 35V SMD Aluminum Capacitors |
C1 |
SMD |
|
1 |
|
10uF 50V 0805 |
C2 |
0805C |
|
1 |
|
0.1uF 50V 0603 |
C3, C4 |
0603A |
|
2 |
|
22uF 25V 0805 |
C6,C5 |
0805C |
|
1 |
|
NC |
C7 |
0603A |
|
1 |
|
2.54 alignment 4PIN， 2 lines |
O1 |
DIP |
|
1 |
|
0650-4.7UH SMD Inductor |
L1 |
SMD |
|
1 |
|
453K 1% 0603 |
R1 |
0603SL |
|
1 |
|
143K 1% 0603 |
R2 |
0603SL |
|
1 |
|
536K 1% 0603 |
R3 |
0603SL |
|
1 |
|
210K 1% 0603 |
R4 |
0603SL |
|
1 |
|
100K 5% 0603 |
R5 |
0603SL |
|
1 |
|
PW2312 |
U1 |
SOT23-6 |
|
1 |
