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Part: NCP1521
Category:
Power Management
-> DC-DC Converters
-> Step-down
Description: 1.5 MHz, 600 mA, High−Efficiency, Low Quiescent Current, Adjustable Output Voltage, Step−Down Converter<<<>>>The NCP1521 step−down PWM DC−DC converter is optimized<<<>>>for portable applications powered from one cell Li−ion or three cell Alkaline/NiCd/NiMH batteries. The device is available in an adjustable output voltage from 0.9 V to 3.3 V. It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built−in 1.5 MHz (nominal) oscillator which reduces component size by allowing a small inductor and capacitors. Automatic switching PWM/PFM mode offers improved system efficiency. Finally, it includes an integrated soft−start, cycle−by−cycle current limiting, and thermal shutdown protection. The NCP1521 is available in a space saving, low profile TSOP5 package. <<<>>>Features and Applications <<<>>>Features <<<>>>96% efficiency, 30 uA quiescent current, 0.3 uA shutdown current <<<>>>1.5 MHz switching frequency <<<>>>Auto-switching between PWM and PFM, depending on loading <<<>>>alskdjfh <<<>>>Applications <<<>>>Extends battery life and 'play-time' <<<>>>Lowers required inductance and capacitance, which reduces required PCB space <<<>>>Ensures low power consumption at light loading <<<>>>Power supply for application processor <<<>>>Power supply for processor with low core voltage <<<>>>Cellular phones, smart phones, and PDAs <<<>>>MP3 players and portable audio systems <<<>>>Digital still cameras and video cameras
Company: ON Semiconductor
Datasheet: Download NCP1521 datasheet File size : 150 kB
Request For quote: Find where to buy NCP1521
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