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MAX748AC View Datasheet(PDF) - Maxim Integrated

Part Name
Description
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MAX748AC Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
3.3V, Step-Down,
Current-Mode PWM DC-DC Converters
____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 3, TA = +25°C, VOUT = 3.3V, unless otherwise noted.)
MAX763A
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
4.5
4.0
IOUT = 0mA
3.5
TA = +125°C
3.0
2.5
2.0
TA = -55°C
1.5
1.0
TA = +25°C
0.5
0
0 1 2 3 4 5 6 7 8 9 10 11 12
SUPPLY VOLTAGE (V)
MAX748A
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
5.0
IOUT = OmA
4.0
TA = -55°C
3.0
TA = +125°C
2.0
1.0
TA = +25°C
0
0 2 4 6 8 10 12 14 16
SUPPLY VOLTAGE (V)
PEAK INDUCTOR CURRENT
vs. OUTPUT CURRENT
1000
800
VIN = 11V
600
400
200
VIN = 6V
VIN = 8V
0
0 50 100 150 200 250 300 350 400 450 500 550
OUTPUT CURRENT (mA)
OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
275
250
225
MAX748A
200
175
MAX763A
150
125
100
0 2 4 6 8 10 12 14 16
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT
vs. TEMPERATURE
3.5
NOTES 3, 4
3.0
2.5
2.0
1.5
1.0
0.5
IOUT = 0mA
V+ = 5V
0
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
4.0
ILOAD = 50mA
3.5
ILOAD = 200mA
3.0
2.5
2.0
ILOAD = 500mA
1.5
ILOAD = 300mA
1.0
0.5
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
4.0
VIN = 4.0V
3.5
3.0
2.5
VIN = 3.5V
2.0
1.5
VIN = 3.0V
1.0
0.5
OSCILLATOR FREQUENCY
vs. TEMPERATURE
300
IOUT = 100mA
250 V+ = 5V
MAX748A
200
150
MAX763A
100
50
0
0 50 100 150 200 250 300 350 400 450 500
OUTPUT CURRENT (mA)
0
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
4 _______________________________________________________________________________________
 

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