MAX870EUK/D Ver la hoja de datos (PDF) - Maxim Integrated
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MAX870EUK/D Datasheet PDF : 8 Pages
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Switched-Capacitor Voltage Inverters
__________________________________________Typical Operating Characteristics
(Circuit of Figure 1, VIN = +5V, C1 = C2 = C3, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
3.0
2.5
2.0
1.5
MAX871
1.0
MAX870
0.5
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
MAX870
OUTPUT CURRENT vs. CAPACITANCE
45
40
VIN = 4.75V, VOUT = -4.0V
35
30
VIN = 3.15V, VOUT = -2.5V
25
20
15
VIN = 1.9V, VOUT = -1.5V
10
5
0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
CAPACITANCE (µF)
MAX871
OUTPUT CURRENT vs. CAPACITANCE
35
VIN = 4.75V, VOUT = -4.0V
30
25
VIN = 3.15V, VOUT = -2.5V
20
15
10
VIN = 1.9V, VOUT = -1.5V
5
0
0
0.5 1.0
1.5 2.0
2.5
CAPACITANCE (µF)
OUTPUT RESISTANCE
vs. SUPPLY VOLTAGE
60
50
40
MAX871
30
MAX870
20
10
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
MAX870
OUTPUT VOLTAGE RIPPLE
vs. CAPACITANCE
450
400
VIN = 4.75V, VOUT = -4.0V
VIN = 3.15V, VOUT = -2.5V
350
VIN = 1.9V, VOUT = -1.5V
300
250
200
150
100
50
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
CAPACITANCE (µF)
500
450
400
350
300
250
200
150
100
50
0
0
MAX871
OUTPUT VOLTAGE RIPPLE
vs. CAPACITANCE
VIN = 4.75V, VOUT = -4.0V
VIN = 3.15V, VOUT = -2.5V
VIN = 1.9V, VOUT = -1.5V
0.5 1.0 1.5 2.0 2.5
CAPACITANCE (µF)
MAX870
OUTPUT RESISTANCE vs. TEMPERATURE
50
45
40
35
VIN = 1.5V
30
25
VIN = 3.3V
20
15
VIN = 5.0V
10
5
0
-40 -15 10
35
60
85
TEMPERATURE (°C)
MAX871
OUTPUT RESISTANCE vs. TEMPERATURE
70
60
VIN = 1.5V
50
40
VIN = 3.3V
30
20
VIN = 5.0V
10
0
-40 -15
10
35
60
85
TEMPERATURE (°C)
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-4.0
-4.5
-5.0
0
MAX870
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
VIN = 2.0V
VIN = 3.3V
VIN = 5.0V
5 10 15 20 25 30 35 40 45
OUTPUT CURRENT (mA)
_______________________________________________________________________________________ 3
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