MAX1044 查看數據表（PDF） - Maxim Integrated
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MAX1044 Datasheet PDF : 14 Pages
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MAX1044/ICL7660
Switched-Capacitor Voltage Converters
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
EFFICIENCY
vs. OSCILLATOR FREQUENCY
100
90
80
70
60
50
EXTERNAL
HCMOS
OSCILLATOR
40
30
101
102
103
104
105 6x105
OSCILLATOR FREQUENCY (Hz)
100,000
OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
10,000
1000
0
1
FROM TOP TO BOTTOM AT 5V
MAX1044, BOOST = V+, LV = GND
MAX1044, BOOST = V+, LV = OPEN
ICL7660, LV = GND
ICL7660, LV = OPEN
MAX1044, BOOST = OPEN, LV = GND
MAX1044, BOOST = OPEN, LV = OPEN
2 3 4 5 6 7 8 9 10
SUPPLY VOLTAGE (V)
100,000
10,000
1000
100
10
OSCILLATOR FREQUENCY
vs. EXTERNAL CAPACITANCE
MAX1044 WITH
BOOST -V+
ICL7660 AND
MAX1044 WITH
BOOST = OPEN
1
0.1
1
10 100 1000 10,000 100,000
COSC (pF)
OSCILLATOR FREQUENCY
vs. TEMPERATURE
100
80
A
60
A: MAX1044 WITH
BOOST = V+
B: ICL7600
C: MAX1044 WITH
BOOST = OPEN
40
20
B
C
0
-50 -25
0 25 50 75
TEMPERATURE (°C)
100 125
10,000
QUIESCENT CURRENT
vs. OSCILLATOR FREQUENCY
1000
USING
100 EXTERNAL
CAPACITOR
10
1
100
USING
EXTERNAL
HCMOS
OSCILLATOR
101 102 103 104 105 5x105
OSCILLATOR FREQUENCY (Hz)
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