This post explains for the Voltage Regulator.
The Part Number is KIA1117.
The function of this semiconductor is 1A, positive adjustable and fixed regulator.
The package is SOT-223 Type
Manufacturer: KIA Semiconductor
Preview images :
The KIA1117 series of positive adjustable and fixed regulators is designed to provide 1A for applications requiring high efficiency.All internal circuitry is designed to operated down to 800mA input to output differential and the dropout voltage is fully specified as a function of load current.
A voltage regulator is an electronic device that is used to maintain a constant voltage level, regardless of changes in load or input voltage. It does this by adjusting the output voltage so that it remains within a specified range. This helps to ensure that the voltage supplied to a device remains within the acceptable range, even under varying conditions such as changes in temperature or load.
Voltage regulators can be found in a variety of electronic devices, including power supplies, batteries, and automotive systems. They are essential components in many electronic systems to ensure reliable and safe operation. […]
1. Output current of 1A typical
2. Three-terminal adjustable or fixed
3. 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0V outputs
4. Thermal protection built in
5. Fast transient response
1. DVD-Video player
3. Telecom equipment
4. High efficiency linear regulator
5. Printer and other peripheral equipment