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MAX1971 Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX1971 Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 21 page Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step- Down Regulator with POR and RSI/PFO _______________________________________________________________________________________ 7 100 0 0.01 0.1 1 EFFICIENCY vs. LOAD CURRENT 20 10 LOAD CURRENT (A) 40 30 60 70 50 80 90 VOUT2 = 2.5V VOUT1 = 3.3V MAX1970/ MAX1972 VIN = 5.0V VOUT1 = 1.8V VOUT2 = 1.5V 100 0 0.01 0.1 1 EFFICIENCY vs. LOAD CURRENT 20 10 LOAD CURRENT (A) 40 30 60 70 50 80 90 VOUT2 = 2.5V VOUT1 = 3.3V MAX1971 VIN = 5.0V VOUT1 = 1.8V VOUT2 = 1.5V 100 0 0.01 0.1 1 EFFICIENCY vs. LOAD CURRENT 20 10 LOAD CURRENT (A) 40 30 60 70 50 80 90 VOUT2 = 2.5V MAX1970/ MAX1972 VIN = 3.3V VOUT1 = 1.8V VOUT2 = 1.5V 100 0 0.01 0.1 1 EFFICIENCY vs. LOAD CURRENT 20 10 LOAD CURRENT (A) 40 30 60 70 50 80 90 VOUT2 = 2.5V MAX1971 VIN = 3.3V VOUT1 = 1.8V VOUT2 = 1.5V 500 0 0 400 800 700 600 500 300 200 100 INPUT CURRENT vs. OUTPUT CURRENT 100 50 OUTPUT CURRENT (mA) 200 150 300 350 250 400 450 VOUT1 = 3.3V VIN = 5.0V VOUT2 = 2.5V VOUT1 = 1.8V VOUT2 = 1.5V MAX1970/MAX1972 1.22 1.17 010 20 15 5 REFERENCE VOLTAGE vs. REFERENCE LOAD CURRENT 1.18 REFERENCE LOAD CURRENT ( µA) 1.19 1.20 1.21 1.60 0.40 2.5 4.0 5.5 5.0 4.5 3.5 3.0 OSCILLATOR FREQUENCY vs. INPUT VOLTAGE 0.60 INPUT VOLTAGE (V) 0.80 1.20 1.00 1.40 TA = +85 °C MAX1970/MAX1972 TA = +25 °C TA = -40 °C TA = +85 °C MAX1971 TA = +25 °C TA = -40 °C 3 -3 0 400 800 600 200 CHANGE IN OUTPUT VOLTAGE vs. LOAD CURRENT -2 LOAD CURRENT (mA) -1 1 0 2 VOUT1 = 3.3V VOUT1 = 1.8V VOUT2 = 1.5V VOUT2 = 2.5V VIN = 5.0V MAX1970/MAX1972 Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) |
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