전자부품 데이터시트 검색엔진 |
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MAX877 데이터시트(PDF) 4 Page - Maxim Integrated Products |
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MAX877 데이터시트(HTML) 4 Page - Maxim Integrated Products |
4 / 12 page 5V/3.3V/3V/Adjustable-Output, Step-Up/Step-Down DC-DC Converters 4 _______________________________________________________________________________________ __________________________________________Typical Operating Characteristics (Circuit of Figure 4, TA = +25°C, unless otherwise noted.) 90 40 0.1 1 1000 MAX877/MAX879 EFFICIENCY vs. LOAD CURRENT 50 LOAD CURRENT (mA) 60 70 80 10 100 30 VIN = 2.5V VIN = 6.2V VIN = 1.8V VOUT = 5V VIN = 5V VIN = 4V 90 40 0.1 1 1000 MAX878 EFFICIENCY vs. LOAD CURRENT 50 LOAD CURRENT (mA) 60 70 80 10 100 30 VIN = 2.5V VIN = 3.3V VIN = 1.8V VOUT = 3.3V OR 3.0V VIN = 5V VIN = 6.2V 350 100 01 MAX877/MAX879 MAXIMUM OUTPUT CURRENT AT LOW INPUT VOLTAGE 150 INPUT VOLTAGE (V) 200 250 300 23 0 VOUT = 5V 50 350 50 03 MAX878 MAXIMUM OUTPUT CURRENT vs. INPUT VOLTAGE 100 INPUT VOLTAGE (V) 150 200 250 67 0 TA = +70°C 300 12 4 5 VOUT = 3.0V DIP PACKAGE DISSIPATION LIMIT SO PACKAGE DISSIPATION LIMIT 2.0 12 5 SHDN THRESHOLD VOLTAGE vs. INPUT VOLTAGE AND TEMPERATURE 2.5 INPUT VOLTAGE (V) 3.0 3.5 34 1.5 0.5 1.0 7 6 TA = +25°C TA = -55°C TA = +125°C 300 200 12 5 NO-LOAD SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE 220 SUPPLY VOLTAGE (V) 240 260 280 34 180 (SWITCH = OFF) 120 140 160 100 7 6 TA = 0°C TA = -40°C TA = +25°C TA = +85°C 50 12 5 SHUTDOWN SUPPLY CURRENT vs. INPUT VOLTAGE AND TEMPERATURE 60 INPUT VOLTAGE (V) 70 80 34 40 10 20 30 0 7 6 TA = 0°C TA = -40°C TA = +85°C A: IOUT, 200mA/div, 0mA to 200mA B: VOUT, 50mV/div, AC COUPLED MAX878, VOUT = 3.3V, VIN = 2.5V LOAD-TRANSIENT RESPONSE A B 2ms/div A: VIN, 2V/div, 2V to 4V B: VOUT, 50mV/div, AC COUPLED IOUT = 240mA MAX878, VOUT = 3.3V, CINBYPASS = 47µF LINE-TRANSIENT RESPONSE GND 2ms/div A B |
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