NCP9001

www.DataSheet4U.com NCP9001 1.5 MHz, 600 mA, High−Efficiency, Low Quiescent Current, Adjustable Output Voltage Step−Down Converter The NCP9001 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 NCP9001 is available in the space saving, low profile TSOP5 package. Features http://onsemi.com MARKING DIAGRAM 5 5 1 TSOP−5 SN SUFFIX CASE 483 DBPAYWG G 1 95.3% of Efficiency for 3.3 V Output and 4.2 V Input and 80 mA Load−Current Sources up to 600 mA 1.5 MHz Switching Frequency Adjustable Output Voltage from 0.9 V to 3.3 V 30 mA Quiescent Current Synchronous Rectification for Higher Efficiency 2.7 V to 5.5 V Input Voltage Range Thermal Limit Protection Shutdown Current Consumption of 0.3 mA Short Circuit Protection This is a Pb−Free Device Cellular Phones, Smart Phones and PDAs Digital Still/Video Cameras MP3 Players and Portable Audio Systems Wireless and DSL Modems Portable Equipm...