| No | Part number | Description ( Function ) | Manufacturers | |
| 2 | LTC4080 | 500mA Standalone Li-Ion Charger FEATURES Complete Linear Battery Charger with Integrated Buck Converter Battery Charger: ■ Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charge Rate Without Risk of Overheating ■ Internal 4.5 Hour Safety Timer for Termination ■ Charge Current Programmable Up to 500mA with 5% Accuracy ■ C/10 Charge Current Detection Ou |
 Linear Technology |
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| 1 | LTC4080X | 500mA Standalone Li-Ion Charger FEATURES ■ LTC4080X 500mA Standalone Li-Ion Charger with Integrated 300mA Synchronous Buck in 3mm × 3mm DFN DESCRIPTIO The LTC4080X is a complete constant-current/constantvoltage linear battery charger for a single-cell 4.2V lithium-ion/polymer battery with an integrated 300mA synchronous buck converter. A 3mm × 3mm DFN package and low external compone |
Linear Technology |
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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 |
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| LM317 | This is a popular adjustable voltage regulator. |
 ON Semiconductor |
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6N137 | LM393 | 2N3906 | 2N2222 | TIP120 | 1N5818 | LM324N | A1015 | SMAJ20CA |
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