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MAX629 데이터시트(PDF) 4 Page - Maxim Integrated Products |
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MAX629 데이터시트(HTML) 4 Page - Maxim Integrated Products |
4 / 12 page 28V, Low-Power, High-Voltage, Boost or Inverting DC-DC Converter 4 _______________________________________________________________________________________ 700 600 0 0 1 SUPPLY CURRENT vs. INPUT VOLTAGE 500 400 300 100 INPUT VOLTAGE (V) 2 3 4 5 200 VIN = VCC ICC IIN IIN 1.255 1.250 1.230 0 20 40 REFERENCE VOLTAGE vs. REFERENCE LOAD CURRENT 1.245 1.240 REFERENCE LOAD CURRENT ( µA) 60 80 100 120 140 160 1.235 VIN = VCC = 5V C4 = 0.47 µF OUTPUT VOLTAGE RIPPLE VOUT = +24V, ILOAD = 5mA A: ISET = VCC, 20mV/div B: ISET = GND, 20mV/div A B 10 µs/div SHUTDOWN TRANSIENT (POSITIVE CONFIGURATION) VCC = VIN = 5V, RL = 4kΩ 50ms/div 5V SHDN 0V 24V VOUT 0V LOAD-TRANSIENT RESPONSE (ISET = VCC, ILIM = 500mA) VOUT = +24V, ISET = VCC A: LOAD CURRENT, 0mA TO 5mA, 2.5mA/div B: VOUT, AC-COUPLED, 10mV/div A 5mA 0mA B 200 µs/div LOAD-TRANSIENT RESPONSE (ISET = GND, ILIM = 250mA) VOUT = +24V, ISET = GND A: LOAD CURRENT, 0mA TO 5mA, 2.5mA/div B: VOUT, AC-COUPLED, 10mV/div A 0mA 5mA B 100 µs/div SHUTDOWN TRANSIENT (NEGATIVE CONFIGURATION) START-UP DELAY, VCC = VIN = 5V, ILOAD = 5mA 20ms/div VCC = VIN = 5V, RL = 4kΩ 50ms/div 5V 0V 0V VOUT -20V SHDN ____________________________Typical Operating Characteristics (continued) (SHDN = VCC , CREF = 0.1µF, TA = +25°C, unless otherwise noted.) |
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