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EL7551C Datasheet(PDF) 4 Page - Elantec Semiconductor |
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EL7551C Datasheet(HTML) 4 Page - Elantec Semiconductor |
4 / 11 page 4 EL7551C - Preliminary Monolithic 1 Amp DC:DC Step-down Regulator Typical Performance Curves Efficiency vs IO VIN=5V 100 95 90 85 80 75 70 65 60 0.1 0.2 0.4 0.6 1 Load Current IO (A) VO=3.3V VO=1.8V VO=1.2V VO=1V VO=2.5V Power Loss vs IO VIN=5V 0.25 0.2 0.15 0.1 0.05 0 0 0.2 0.4 0.8 1 Output Current IO (A) Load Regulation VO=3.3V 0.6 0.4 0 -0.2 -0.4 -0.6 0 0.2 0.4 0.8 1 Load Current IO (A) VREF vs Temperature 1.258 1.256 1.254 1.252 1.25 1.248 1.246 1.244 1.242 -40 10 60 110 160 Temperature (°C) Efficiency vs IO VO=3.3V 100 95 90 85 80 75 70 65 60 0 0.2 0.4 0.6 1 Load Current IO (A) Line Regulation VO=3.3V 0.6 0.5 0.4 0.2 0 -0.2 -0.4 4.5 4.7 5.1 5.3 5.5 VIN (V) VIN=4.5V VIN=5V VIN=5.5V VIN=4.5V VIN=5V VIN=5.5V 4.9 IO=0.1A IO=1A VO=1.5V VO=3.3V VO=1V 0.6 0.8 0.6 0.2 0.3 0.1 -0.1 -0.3 0.8 FS=500kHz L=Coilcraft DO3316P-472 FS=500kHz L=Coilcraft DO3316P-472 |
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