MAX762 데이터 시트보기 (PDF) - Maxim Integrated
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MAX762 Datasheet PDF : 12 Pages
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12V/15V or Adjustable, High-Efficiency,
Low IQ, Step-Up DC-DC Converters
__________________________________________Typical Operating Characteristics
(Circuit of Figure 2, TA = +25°C, unless otherwise noted.)
EFFICIENCY vs. OUTPUT CURRENT
BOOTSTRAPPED
100
90
VIN = 10V
80
VIN = 5V
70
60
VIN = 2V
50
40
30
20
VOUT = 12V
10
0
0.1
1
10
100
1000
OUTPUT CURRENT (mA)
MAXIMUM OUTPUT CURRENT vs.
INPUT VOLTAGE
400
350
BOOTSTRAPPED
300
250
200
150
NON-BOOTSTRAPPED
100
50
VOUT = 12V
0
3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
NO-LOAD START-UP VOLTAGE
3.5
VOUT = 12V
3.0
BOOTSTRAPPED
(EXTERNAL RESISTORS)
2.5
NON-BOOTSTRAPPED
(EXTERNAL RESISTORS)
2.0
1.5
BOOTSTRAPPED
1.0 (INTERNAL RESISTORS)
0.5
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
EFFICIENCY vs. OUTPUT CURRENT
NON-BOOTSTRAPPED
100
90
VIN = 10V
80
70
VIN = 5V
60
50
40
30
20
VOUT = 12V
10
0
0.1
1
10
100
1000
OUTPUT CURRENT (mA)
REFERENCE OUTPUT RESISTANCE vs.
TEMPERATURE
250
200
10µA
150
100
50µA
100µA
50
0
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
MAX761
START-UP VOLTAGE vs. RLOAD
2.2
VOUT = 12V
2.1
BOOTSTRAPPED
INTERNAL RESISTORS
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
0.1
1
10
100
RLOAD (kΩ)
1000
QUIESCENT CURRENT vs.
INPUT VOLTAGE
2.00
VOUT = 12V
1.75
BOOTSTRAPPED
(INTERNAL RESISTORS)
1.50
1.25
1.00
BOOTSTRAPPED
(EXTERNAL RESISTORS)
0.75
0.50
0.25
NON-BOOTSTRAPPED
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
REFERENCE vs.TEMPERATURE
COEFFICIENT
1.506
1.504
1.502
1.500
1.498
1.496
1.494
1.492
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
LX ON-RESISTANCE vs.
TEMPERATURE
1.6
1.4
V+ = 5V
1.2
1.0
0.8
V+ = 12V
0.6
0.4
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
4 _______________________________________________________________________________________
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