Typical operating characteristics – Rainbow Electronics MAX871 User Manual
Page 3
MAX870/MAX871
Switched-Capacitor Voltage Inverters
_______________________________________________________________________________________
3
0
0.5
1.0
1.5
2.0
2.5
3.0
1.5
2.5
2.0
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX870/71-TOC01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
MAX870
MAX871
60
10
1.5
2.5
3.0
2.0
OUTPUT RESISTANCE
vs. SUPPLY VOLTAGE
50
MAX828/829-02
SUPPLY VOLTAGE (V)
OUTPUT RESISTANCE (
Ω
)
3.5
4.0
5.5
4.5
5.0
40
20
30
MAX870
MAX871
0
15
10
5
20
25
30
35
40
45
50
-40
10
-15
35
60
85
MAX870
OUTPUT RESISTANCE vs. TEMPERATURE
MAX870/71 ROC3
TEMPERATURE (°C)
OUTPUT RESISTANCE (
Ω
)
V
IN
= 1.5V
V
IN
= 3.3V
V
IN
= 5.0V
45
0
0
0.5
3.0
2.5
MAX870
OUTPUT CURRENT vs. CAPACITANCE
35
40
MAX870/871-04
CAPACITANCE (
µ
F)
OUTPUT CURRENT (mA)
1.0
1.5
2.0
3.5
30
25
20
10
5
15
V
IN
= 3.15V, V
OUT
= -2.5V
V
IN
= 1.9V, V
OUT
= -1.5V
V
IN
= 4.75V, V
OUT
= -4.0V
35
0
0
0.5
2.0
MAX871
OUTPUT CURRENT vs. CAPACITANCE
25
30
MAX870/871-07
CAPACITANCE (
µ
F)
OUTPUT CURRENT (mA)
1.0
1.5
2.5
20
15
10
5
V
IN
= 3.15V, V
OUT
= -2.5V
V
IN
= 1.9V, V
OUT
= -1.5V
V
IN
= 4.75V, V
OUT
= -4.0V
450
0
0
0.5
2.0 2.5 3.0
4.0
3.5
4.5
MAX870
OUTPUT VOLTAGE RIPPLE
vs. CAPACITANCE
50
350
400
MAX870/871-05
CAPACITANCE (
µ
F)
OUTPUT VOLTAGE RIPPLE (mVp-p)
1.5
1.0
5.0
300
250
200
150
100
V
IN
= 4.75V, V
OUT
= -4.0V
V
IN
= 3.15V, V
OUT
= -2.5V
V
IN
= 1.9V, V
OUT
= -1.5V
0
20
10
40
30
60
50
70
-40
10
-15
35
60
85
MAX871
OUTPUT RESISTANCE vs. TEMPERATURE
MAX870/71-TOC06
TEMPERATURE (°C)
OUTPUT RESISTANCE (
Ω
)
V
IN
= 1.5V
V
IN
= 3.3V
V
IN
= 5.0V
0
150
100
50
200
250
300
350
400
450
500
0
1.0
0.5
1.5
2.0
2.5
MAX871
OUTPUT VOLTAGE RIPPLE
vs. CAPACITANCE
MAX870/71 TOC08
CAPACITANCE (
µ
F)
OUTPUT VOLTAGE RIPPLE (mVp-p)
V
IN
= 4.75V, V
OUT
= -4.0V
V
IN
= 3.15V, V
OUT
= -2.5V
V
IN
= 1.9V, V
OUT
= -1.5V
__________________________________________Typical Operating Characteristics
(Circuit of Figure 1, V
IN
= +5V, C1 = C2 = C3, T
A
= +25°C, unless otherwise noted.)
-5.0
-4.0
-4.5
-3.0
-3.5
-2.0
-2.5
-1.5
-0.5
-1.0
0
0
10
15
20
5
25
30
35
40
45
MAX870
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX870/871-TOC9
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
V
IN
= 2.0V
V
IN
= 3.3V
V
IN
= 5.0V