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6 1 Publication Order Number: NCP1521B/D 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% 50% 0 NCP1521B VOUT = 3.3 V VIN = 4.2 V TA = 25°C 100 200 300 400 500 600 700 IOUT (mA) Figure 3. Efficiency vs. Output Current Vbattery VIN 1 4.7 mF GND 2 Q1 Q2 PWM/PFM ...
PFM Mechanical Dimensions Pin Connections Pin 2 Single -VIN Dual -VIN 3 -VIN -VIN 9 No Pin NC +VOUT -VOUT +VIN Common -VOUT +VOUT Common +VIN 11 14 16 22 23 +VIN +VIN NC: No Connection Mechanical Notes: • All dimensions are typical in...
3 1 Publication Order Number: NCP1521B/D 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% 50% 0 NCP1521B VOUT = 3.3 V VIN = 4.2 V TA = 25°C 100 200 300 400 500 600 700 IOUT (mA) Figure 3. Efficiency vs. Output Current Vbattery VIN 1 4.7 mF GND 2 Q1 Q2 PWM/PFM ...
NCP1422 800 mA Sync−Rect PFM Step−Up DC−DC Converter with True−Cutoff and Ring−Killer NCP1422 is a monolithic micropower high−frequency step−up switching converter IC specially designed for battery−operated hand−held electronic products up to 800 mA loading. It integrates ...
康拉德---“欧洲原装进口,铸造中欧工贸新桥梁” 北京康拉德科技有限公司是一家专业从事欧洲工业产品进口贸易的公司,致力于打造德国、瑞士等欧洲中小型自动化企业与国内客户的连街桥梁,专注于做工控产品和用户之间的一站式供应商。主要产品有工业自动化设备、机电工控设备、液压设备、电气设备和零部件等产品。 通过100%从...
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0 1 Publication Order Number: NCP1521B/D NCP1522B 100 95 90 85 80 75 70 65 60 55 50 0 VOUT = 3.3 V VIN = 4.2 V TA = 25°C 100 200 300 400 500 IOUT, OUTPUT CURRENT (mA) Figure 3. Efficiency vs. Output Current 600 Vbattery VIN 1 4.7 mF GND 2 Q1 Q2 PWM/PFM CONTROL I...
NCP1421 600 mA Sync−Rect PFM Step−Up DC−DC Converter with True−Cutoff and Ring−Killer NCP1421 is a monolithic micropower high−frequency step−up switching converter IC specially designed for battery−operated hand−held electronic products up to 600 mA loading. It integrates ...
6 1 Publication Order Number: NCP1421/D NCP1421 0.5 V Chip Enable FB + 1− PFM REF 4 Voltage Reference LBI/EN 2 1.20 V + − VBAT BAT M3 5 ZLC + − + 20 mV CONTROL LOGIC TRUE CUTOFF CONTROL _ZCUR _MSON _TSDON VDD _MAINSW2ON M2 SENSEFETt M1 LX VDD 7 OUT 8 VOUT _...