The NCP1117 series from onsemi represents a family of low-dropout (LDO) positive voltage regulators capable of delivering an output current exceeding 1.0 A. These regulators are designed to maintain a low dropout voltage of maximum 1.2 V at 800 mA across a range of temperatures, making them suitable for various applications requiring stable voltage under varying load conditions.
This series includes nine fixed output voltage options ranging from 1.5 V to 12 V, alongside an adjustable output version that can be programmed from 1.25 V to 18.8 V with the use of two external resistors. The devices feature on-chip voltage trimming, ensuring ±1.0% accuracy of the reference/output voltage. For protection, the NCP1117 series incorporates current limiting, safe operating area compensation, and thermal shutdown features. These regulators are capable of operating with an input voltage up to 20 V and are available in both SOT−223 and DPAK packages.
Voltage Regulators
Voltage regulators are fundamental components in electronic circuits, designed to maintain a constant voltage level to electronic devices, despite variations in input voltage and load conditions. They play a crucial role in protecting sensitive electronic components by providing stable power supply, hence ensuring reliable operation of the electronic systems.
Low-dropout (LDO) regulators, such as the NCP1117 series, offer the advantage of a lower voltage difference between the input and output, which enhances efficiency especially in low-voltage applications. When selecting an LDO regulator, engineers should consider key parameters such as output current capability, dropout voltage, output voltage options (fixed or adjustable), accuracy, and protection features.
The NCP1117 series stands out with its ability to provide a high output current of over 1.0 A and a low dropout voltage, making it suitable for a wide range of applications. The availability of both fixed and adjustable output versions offers flexibility in design. Additionally, the integrated protection features ensure the longevity and reliability of both the regulator and the overall system it powers.
In summary, the NCP1117 series offers a reliable solution for applications requiring stable voltage supply with high current capability and low dropout. Its versatility and protective features make it an excellent choice for a variety of electronic applications.