LY1035应用3V升压IC最佳方案.pdf

81. 35 350KHz ted of LY1035 High Efficiency ,synchronous PFM step-up DC-DC converter General Description Features Selection Guide Series is a PFM Step-up DC/DC converter IC with low supply current by CMOS process. High frequency noise that occurs during switching is reduced by using advanced circuit designed, output voltage is programmable in 0.1V steps between ~5.0V and maximum frequency is 0KHz(TYP.). A low ripple, high efficiency step-up DC/DC converter can be construc Xxx with only two external components. Xxx is suitable for use with battery-powered instruments with low noise and low supply current. Typical Application ? Power source for battery-powered equipment ? Power source for Wireless mouse,toys, Cameras, VCRs, PDAs, MP3, and Led lighting etc Typical Application Circuit ? High efficiency：95% ? Maximum frequency： ? Low Quiescent Current：15uA ? Input Voltage: 0.9V~5.0V ? Output Voltage Range:2.5V to 5.0V ? High Accuracy:± 2% ? Low ripple and Low noise ? Package :SOT89-3 ，SOT23-3 ，TO-92， SOT23-5 LY1035 LY1035 LY1035 LY 10 35 X XX X TEL:0755 1/8 lianyiwei 深圳市联益微电子股份有限公司 销售经理 Q阳先 TEL:0755 2/8 LY1035CXXX LY1035CXXX LY1035 Pin Configuration Pin Assignment TYPE POSTFIX PACKAGE SWITCHING TRANSISTOR CE FUNCTION FEATURES M3 SOT23-3 Build in Transistor No Lx P SOT89-3 T TO92 M5 SOT23-5 Build in Transistor Yes LX+CE Pin Number Pin Name Description SOT89-3 SOT23-3 TO-92 1 1 1 GND Ground 2 3 2 VOUT Voltage output 3 2 3 LX Swi