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MAX877 Fiches technique(PDF) 5 Page - Maxim Integrated Products

No de pièce MAX877
Description  5V/3.3V/3V/Adjustable-Output, Step-Up/Step-Down DC-DC Converters
Download  12 Pages
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Fabricant  MAXIM [Maxim Integrated Products]
Site Internet  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX877 Fiches technique(HTML) 5 Page - Maxim Integrated Products

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5V/3.3V/3V/Adjustable-Output,
Step-Up/Step-Down DC-DC Converters
_______________________________________________________________________________________
5
A: SWITCH VOLTAGE (LX PIN), 2V/div
B: INDUCTOR CURRENT, 0.5A/div
C: OUTPUT VOLTAGE RIPPLE, 50mV/div
MAX877, VIN = 1.5V, IOUT = 100mA
SWITCHING WAVEFORMS—
CONTINUOUS CONDUCTION
A
B
C
0mA
5
µs/div
A: SWITCH VOLTAGE (LX PIN), 2V/div
B: INDUCTOR CURRENT, 0.5A/div
C: OUTPUT VOLTAGE RIPPLE, 50mV/div
MAX877, VIN = 3V, IOUT = 70mA
SWITCHING WAVEFORMS—
DISCONTINUOUS CONDUCTION
A
B
C
2
µs/div
0mA
A: SWITCH VOLTAGE (LX PIN), 2V/div
B: INDUCTOR CURRENT, 0.5A/div
C: OUTPUT VOLTAGE RIPPLE, 50mV/div
MAX878, VIN = 6.0V, VOUT = 5.0V, IOUT = 210mA
STEP-DOWN CONVERSION
A
B
C
5
µs/div
0mA
A: SHDN, 2V/div
B: VOUT, 1V/div
VOUT = 3V
MAX878
START-UP TIME
GND
GND
10ms/div
A
B
A: INPUT VOLTAGE, 2V/div, 2V to 6V
B: OUTPUT VOLTAGE, 50mV/div
MAX878, IOUT = 100mA, VOUT = 3.3V
STEP-UP/STEP-DOWN
OPERATION
A
B
20ms/div
GND
____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 4, TA = +25°C, unless otherwise noted.)


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