MAX1708 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1708 Datasheet PDF : 13 Pages
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High-Frequency, High-Power, Low-Noise,
Step-Up DC-DC Converter
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
EFFICIENCY vs. OUTPUT CURRENT
100
80
VIN = 3.3V
VIN = 2.5V
60
40
20
0
0.1
VOUT = 5V
1
10 100 1000
OUTPUT CURRENT (mA)
10,000
EFFICIENCY vs. OUTPUT CURRENT
100
VIN = 2.5V
80
60
VIN = 1.2V
40
20
VOUT = 3.3V
0
0.1
1
10 100 1000
OUTPUT CURRENT (mA)
10,000
EFFICIENCY vs. SWITCHING FREQUENCY
90
89
88
87
VIN = 3.3V, VOUT = 5V, IOUT =1A
86
350 450 550 650 750 850 950
SWITCHING FREQUENCY (kHz)
LOAD REGULATION
(VIN = 3.3V, VOUT = 5V)
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
PLOT NORMALIZED TO IOUT = 500mA
-2.0
0.1
1
10 100 1000
OUTPUT CURRENT (mA)
10,000
LINE REGULATION
(VOUT = 3.3V)
0.8
0.7
IOUT = 1A
0.6
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2 IOUT = 500mA
-0.3
PLOT NORMALIZED TO VIN = 2.5V
1.50 1.75 2.00 2.25 2.50 2.75 3.00
INPUT VOLTAGE (V)
LOAD REGULATION
(VIN = 2.5V, VOUT = 3.3V)
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
PLOT NORMALIZED TO IOUT = 500mA
-2.0
0.1
1
10 100 1000
OUTPUT CURRENT (mA)
10,000
NO LOAD INPUT CURRENT
vs. INPUT VOLTAGE
25
20
VOUT = 5V, VIN INCREASING
15
10
VOUT = 3.3V, VIN INCREASING
5
0
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
LINE REGULATION
(VOUT = 5V)
0.3
0.2
0.1
0
-0.1
IOUT = 1A
IOUT = 500mA
-0.2
PLOT NORMALIZED TO VIN = 3.3V
-0.3
2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00
INPUT VOLTAGE (V)
NO LOAD INPUT CURRENT
vs. INPUT VOLTAGE
70
60
VOUT = 5V, VIN DECREASING
50
40
30
20
VOUT = 3.3V, VIN DECREASING
10
0
0123456
INPUT VOLTAGE (V)
_______________________________________________________________________________________ 5
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