NCP161BFCT280T2G

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The NCP161BFCT280T2G is a Linear Voltage Regulator or Low Drop Out (LDO) regulator produced by ON Semiconductor and is incorporated in the Power Management Integrated Cirucuit (PMIC) family. It is a lightweight, compact, and electrically efficient regulator suitable for a variety of applications.

The NCP161BFCT280T2G has a wide range of operating voltage (2.7V to 7.0V) and can deliver a maximum output current of 280mA. It is particularly suited to applications where power supply must be of precise voltage and low noise. Its wide input voltage range allows it to be used in many designs, as it covers voltages from various popular device power supply systems such as 1-cell Li-ion/Polymer and 3-cell Alkaline/NiCd.

The NCP161BFCT280T2G features an integrated Current Limit and Thermal Shutdown protection. It is designed to reduce output voltage when the current limit is exceeded or is in danger of exceeding the specified current limit. The temperature of the P-Channel MOSFET diode inside the chip is monitored by an internal thermal shutoff, which will shut off the LDO output if the junction temperature becomes too high. The device is RoHS compliant.

The application field of NCP161BFCT280T2G is very wide, ranging from medical to industrial systems, such as bio-medical diagnostics, portable medical imaging, food processing and printing equipment. Due to its wide operating voltage range, temperature and current regulation, it can be used in applications that require precise and reliable power supply, such as Personal Video Recordings, always-on networks, vehicular systems, and cellular base equipment.

The working principle of the NCP161BFCT280T2G is based on the commonly used Linear Voltage Regulation theory. Using a Linear Regulator, the output voltage is regulated by using a feedback loop. In this case, the feedback loop consists of an internal Voltage Reference, Error Amplifier, and Control Voltage Output (CVO) regulation, which should remain within a predefined range to maintain the correct output voltage. The CVO voltage is compared with the internal reference voltage and, in the event of any discrepancy, the error amplifier adjusts the gate voltage of the main switch until the CVO reaches the regulated output voltage level. In this way, the output voltage is regulated.

Overall, the NCP161BFCT280T2G is an excellent choice for applications that require precise and low noise voltage regulation. It offers wide operating voltage range, temperature and current regulation and is compliant with RoHS standards. Its ability to reduce output voltage when the current limit is exceeded or is in danger of exceeding the specified current limit makes it a desirable choice for many projects.

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