NCP1251BSN65T1G

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Powersupplies, also known as power converters, are vital components in electronic systems. In particular, Offline Switchers, AC DC Converters, and PMICs (power management ICs) are crucial for providing stable and efficient energy supply. NCP1251BSN65T1G is a standard power management IC from ON Semiconductor, suitable for offline switchers and AC/DC converters.

NCP1251BSN65T1G operates as a power switch, consisting of a Fast-Recovery P-channel MOSFET, an integrated pre-driver, and an additional N-channel MOSFET. When triggered, the internal pre-driver turns on the N-CHMOSFET quickly, thus providing fast turn-on for the P-channel MOSFET. During the turn-on, the pre-driver also performs a soft-start task, ensuring that the voltage at its output is ramping up slowly, thus avoiding high surge currents and helping to maintain the output current stability. When triggered again, the pre-driver turns off the N-CHMOSFET, providing fast turn-off for the P-channel MOSFET and ensuring the stability of the output voltage.

NCP1251BSN65T1G is primarily applicable to offline switchers and AC/DC converters, especially in low power applications. Its low operating voltage ranges from 9V to 16V, allowing it to operate in a wide range of input voltages. In addition, its low quiescent current of only 1.6mA helps to prolong battery life in applications that require long standby times. Its high switching frequency design (up to 500kHz) allows for quick response time and lower power loss. Its integrated features also include EMI filter, synchronization, phase angle dimming, and feedback voltage regulation.

In summary, NCP1251BSN65T1G from ON Semiconductor is a versatile IC suitable for offline switchers and AC/DC converters. Its high speed operation and integrated features make it well-suited for low power applications. It is designed to provide fast response times, low power loss, long battery life, and EMI protection.

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