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MAX1044 Datasheet(Hoja de datos) 3 Page - Maxim Integrated Products

No. de Pieza. MAX1044
Descripción  Switched-Capacitor Voltage Converters
Descarga  12 Pages
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Fabricante  MAXIM [Maxim Integrated Products]
Página de inicio  http://www.maxim-ic.com
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 3 page
background image
80
90
100
30
101
EFFICIENCY
vs. OSCILLATOR FREQUENCY
70
OSCILLATOR FREQUENCY (Hz)
104
50
40
102
103
6x105
60
105
EXTERNAL
HCMOS
OSCILLATOR
10,000
100,000
0.1
1
OSCILLATOR FREQUENCY
vs. EXTERNAL CAPACITANCE
1000
COSC (pF)
1000
10
1
10
100
100,000
100
10,000
ICL7660 and
MAX1044 with
BOOST = OPEN
MAX1044 with
BOOST -V+
100
1
OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
4
10,000
1000
23
6
7
8
9
10
100,000
5
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
0
0123
45
67
8
9
10
OUTPUT VOLTAGE and OUTPUT RIPPLE
vs. LOAD CURRENT
-0.5
-2.0
LOAD CURRENT (mA)
-1.5
-1.0
0
250
200
150
100
50
400
350
300
OUTPUT
VOLTAGE
V+ = 2V
LV = GND
OUTPUT RIPPLE
A: MAX1044 with
BOOST = V+
B: ICL7660
C: MAX1044 with
BOOST = OPEN
A
B
C
0
0
5
10
15
20
25
30
35
40
OUTPUT VOLTAGE and OUTPUT RIPPLE
vs. LOAD CURRENT
-0.5
-2.0
-2.5
-3.0
-3.5
-4.0
-4.5
-5.0
LOAD CURRENT (mA)
-1.5
-1.0
0
720
640
560
480
400
320
240
160
80
800
OUTPUT VOLTAGE
OUTPUT RIPPLE
V+ = 5V
LV = OPEN
A
A
B
C
B
C
A: MAX1044 with
BOOST = V+
B: ICL7660
C: MAX1044 with
BOOST = OPEN
0
0
5
10
15
20
25
30
35
40
OUTPUT VOLTAGE and OUTPUT RIPPLE
vs. LOAD CURRENT
-1
-4
-5
-6
-7
-8
-9
-10
LOAD CURRENT (mA)
-3
-2
0
700
630
560
490
420
350
280
210
140
70
V+ = 10V
LV = OPEN
OUTPUT
RIPPLE
A
B
A: MAX1044 with
BOOST = V+
B: ICL7660
C: MAX1044 with
BOOST = OPEN
C
B
C
A
OUTPUT
VOLTAGE
0
01
2
3
4567
8
9 10
EFFICIENCY and SUPPLY CURRENT
vs. LOAD CURRENT
10
40
50
60
70
80
90
100
LOAD CURRENT (mA)
30
20
0
7
8
9
10
6
5
4
3
2
1
SUPPLY CURRENT
EFFICIENCY
V+ = 2V
LV = GND
0
0
5
10
15
20
25
30
35
40
EFFICIENCY and SUPPLY CURRENT
vs. LOAD CURRENT
10
40
50
60
70
80
90
100
LOAD CURRENT (mA)
30
20
0
35
40
45
50
30
25
20
15
10
5
V+ = 5V
LV = OPEN
EFFICIENCY
A: MAX1044 with
BOOST = V+
B: ICL7660
C: MAX1044 with
BOOST = OPEN
SUPPLY CURRENT
B
C
A
0
0
5
10
15
20
25
30
35
40
EFFICIENCY and SUPPLY CURRENT
vs. LOAD CURRENT
10
40
50
60
70
80
90
100
LOAD CURRENT (mA)
30
20
0
35
40
45
50
30
25
20
15
10
5
V+ = 10V
LV = OPEN
A: MAX1044 with
BOOST = V+
B: ICL7660
C: MAX1044 with
BOOST = OPEN
SUPPLY CURRENT
B, C
EFFICIENCY
A
Switched-Capacitor Voltage Converters
_______________________________________________________________________________________
3
__________________________________________Typical Operating Characteristics
(V+ = 5V; CBYPASS = 0.1µF; C1 = C2 = 10µF; LV = open; OSC = open; TA = +25°C; unless otherwise noted.)




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