| No | Part number | Description ( Function ) | Manufacturers | |
| 3 | TPS51225 | Dual Synchronous Step-Down Controller with 5-V and 3.3-V LDOs (Rev. B) |
 Texas Instruments |
|
| 2 | TPS51225B | Dual Synchronous Step-Down Controller with 5-V and 3.3-V LDOs (Rev. B) |
Texas Instruments |
|
| 1 | TPS51225C | Dual Synchronous Step-Down Controller with 5-V and 3.3-V LDOs (Rev. B) |
Texas Instruments |
|
List of most widely used semiconductors
| Part Number | Function | Manufacturers | |
| 1N4007 | The 1N4007 is a rectification diode that is designed for high-voltage applications, typically up to 1000V. It has a maximum current rating of 1A and a forward voltage drop of around 0.7V. |
 Vishay |
|
| LM317 | This is a popular adjustable voltage regulator. |
 ON Semiconductor |
|
| 6N137 | LM393 | 2N3906 | 2N2222 | TIP120 | 1N5818 | LM324N | A1015 | SMAJ20CA | |||
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