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MAX748A Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX748A Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 12 page 3.3V, Step-Down, Current-Mode PWM DC-DC Converters _______________________________________________________________________________________ 5 _________________________________Typical Operating Characteristics (continued) (Circuit of Figure 3, TA = +25°C, VOUT = 3.3V, unless otherwise noted.) SWITCHING WAVEFORMS, CONTINUOUS CONDUCTION 2 µs/div A: SWITCH VOLTAGE (LX PIN), 5V/div, 0V TO +6V B: INDUCTOR CURRENT, 200mA/div C: OUTPUT VOLTAGE RIPPLE, 50mV/div V+ = 6V, IOUT = 250mA 6V 0V 400mA 0mA A B B C SWITCHING WAVEFORMS, DISCONTINUOUS CONDUCTION 2 µs/div A: SWITCH VOLTAGE (LX PIN), 5V/div, 0V TO +6V B: INDUCTOR CURRENT, 100mA/div C: OUTPUT VOLTAGE RIPPLE, 50mV/div V+ = 6V, IOUT = 75mA 6V 0V 200mA 0mA A C LINE-TRANSIENT RESPONSE 5ms/div A: VOUT, 50mV/div B: V+, 5V/div, 7.0V TO 10.0V IOUT = 350mA 10V 7V 0V B A LOAD-TRANSIENT RESPONSE 5ms/div A: VOUT, 50mV/div B: IOUT, 200mA/div, 0mA TO 500mA V+ = 6V 500mA 0mA B A Note 2: Operation beyond the specifications listed in the Electrical Characteristics may exceed the power dissipation ratings of the device. Note 3: Wide temperature range circuit of Figure 5 using Sprague surface-mount capacitors. Note 4: Standby current includes all external component leakage currents. Capacitor leakage currents dominate at TA = +85°C. |
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Descripción similar - MAX748A |
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