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MAX1973 Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX1973 Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 15 page Smallest 1A, 1.4MHz Step-Down Regulators 6 _______________________________________________________________________________________ Typical Operating Characteristics (Circuits of Figure 2, 3, and 4; TA = +25°C, unless otherwise noted.) 100 0 0.01 0.1 1 EFFICIENCY vs. LOAD CURRENT 20 10 LOAD CURRENT (A) 40 30 60 70 50 80 90 VOUT = 2.5V VOUT = 1V VOUT = 1.8V VIN = 3.3V 100 0 0.01 0.1 1 EFFICIENCY vs. LOAD CURRENT 20 10 LOAD CURRENT (A) 40 30 60 70 50 80 90 VOUT = 3.3V VOUT = 2.5V VIN = 5V 0 0.10 0.05 0.20 0.15 0.30 0.25 0.35 DROPOUT VOLTAGE vs. LOAD CURRENT LOAD CURRENT (A) 0 0.2 0.4 0.6 0.8 VOUT = 3.3V VOUT = 2.5V 0 4 2 8 6 10 12 02 13 4 5 NO-LOAD CURRENT vs. INPUT VOLTAGE INPUT VOLTAGE (V) VOUT = 2.5V 1.244 1.245 1.246 1.247 1.248 1.249 1.250 1.251 1.252 0 0.2 0.4 0.6 0.8 1.0 FB VOLTAGE vs. LOAD CURRENT LOAD CURRENT (A) MAX1973 VIN = 5V R1 = 22k Ω R2 = 13k Ω -4.0 -2.5 -3.0 -3.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 0.01 1 0.1 10 100 1000 CHANGE IN OUTPUT VOLTAGE vs. LOAD CURRENT LOAD CURRENT (A) VIN = 5V VOUT = 1.8V 2.5V 1V 1.10 1.20 1.15 1.30 1.25 1.35 1.40 24 35 6 SWITCHING FREQUENCY vs. SUPPLY VOLTAGE SUPPLY VOLTAGE (V) TA = +85 °C TA = +25 °C TA = -40 °C |
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