NCP1117DT12RKG

NCP1117DT12RKG Application Field and Working Principle

NCP1117DT12RKG is a voltage regulator integrated circuit (IC) that belongs to a linear voltage regulator. These ICs are designed to regulate the voltage in different types of applications by providing their output with a stabilized voltage. The application field of the NCP1117DT12RKG Linear Voltage Regulator IC is mainly related to the power management of electronic circuitry such as in power supplies, mobile phones, portable music players, digital cameras, video recorders or any equipment requiring voltage regulation.

Usability

The NCP1117DT12RKG Linear Voltage Regulator IC can handle load current up to 1A with a maximum input voltage up to 18V. It features short-circuit protection, adjustable output voltage, thermal warning, and shut down protection; it does not need any additional components to be functional.

Working Principle

Applications, such as mobile phones or portable music players, are often subject to wide input voltage range, and require an efficient and reliable voltage regulator to provide a constant and stabilized output voltage. This is the task of the NCP1117DT12RKG Linear Voltage Regulator IC.

The NCP1117DT12RKG is a low-dropout voltage regulator featuring a dual output stage. The IC uses a P-Channel and N-Channel MOSFET as an internal pass element. The P-Channel MOSFET is used to increase the output voltage while the N-Channel MOSFET is used to decrease it and to provide a constant-voltage supply to the load. The IC works as a linear regulator when there is a voltage difference between the input and the output. This difference is converted into heat to be dissipated and the regulation of the output voltage is achieved.

Current Regulation

The NCP1117DT12RKG IC also offers current limit protection. When the output current reaches the programmed value, the current limit turns off the OutputMOSFET and the regulator will be in a latched shut-down state until the EXTCLK signal is activated. This protects the load from excessive current and is ideal for load current transient protection.

Output Voltage Adjustment

The NCP1117DT12RKG Linear Voltage Regulator IC enables the adjustment of the output voltage through a resistor divider or directly operating through the output adjustment pin. The adjustment range can range from 5.3V to 7.2V depending on the output voltage step.

Conclusion

In conclusion, the NCP1117DT12RKG Linear Voltage Regulator IC features a wide range of functionalities including short-circuit protection, adjustable output voltage, thermal warning, and shut down protection. It is suitable for applications such as power supplies, mobile phones, portable music players, digital cameras, and video recorders. It works as a linear regulator when there is a voltage difference between the input and the output and offers current limit protection.