Typical operating characteristics (continued) – Rainbow Electronics ICL7660 User Manual
Page 4
0.1
1
2
3
4
5
6
7
8
9
10
QUIESCENT CURRENT
vs. SUPPLY VOLTAGE
MAX1044-Fig 12
SUPPLY VOLTAGE (V)
QUIESCENT CURRENT (µA)
10
1
100
1000
2000
A
B
D
C
A: MAX1044, BOOST = V+, LV = GND
B: MAX1044, BOOST = V+, LV = OPEN
C: ICL7660 and MAX1044 with
BOOST = OPEN, LV = GND;
ABOVE 5V, MAX1044 ONLY
D: ICL7660 and MAX1044 with
BOOST = OPEN, LV = OPEN
0
10
1
10
2
10
3
10
4
10
5
OUTPUT RESISTANCE
vs. OSCILLATOR FREQUENCY
MAX1044-Fig 14
FREQUENCY (Hz)
RESISTANCE (
Ω
)
200
100
300
400
500
600
700
800
900
1000
C1, C2 = 100µF
C1, C2 = 1µF
C1, C2 = 10µF
EXTERNAL
HCMOS
OSCILLATOR
0
-50
-25
0
25
50
75
100 125
QUIESCENT CURRENT
vs. TEMPERATURE
MAX1044-Fig 13
TEMPERATURE (°C)
QUIESCENT CURRENT (µA)
200
100
300
400
500
ICL7660, MAX1044 with BOOST = OPEN
MAX1044 with
BOOST = V+
0
1
2
3
4
5
6
7
8
9
10
OUTPUT RESISTANCE
vs. SUPPLY VOLTAGE
MAX1044-Fig 15
SUPPLY VOLTAGE (V)
OUTPUT RESISTANCE (
Ω
)
40
20
60
80
100
120
140
160
180
200
20
-60 -40 -20 0
20 40 60 80 100 120 140
OUTPUT RESISTANCE
vs. TEMPERATURE
MAX1044-Fig 16
TEMPERATURE (°C)
OUTPUT RESISTANCE (
Ω
)
40
30
50
60
70
80
ICL7660,
MAX1044 with
BOOST = OPEN
MAX1044 with
BOOST = V+
MAX1044/ICL7660
Switched-Capacitor Voltage Converters
4
_______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)
(V+ = 5V; C
BYPASS
= 0.1µF; C1 = C2 = 10µF; LV = open; OSC = open; T
A
= +25°C; unless otherwise noted.)
0
-50
OSCILLATOR FREQUENCY
vs. TEMPERATURE
MAX1044-Fig 10
TEMPERATURE (°C)
OSCILLATOR FREQUENCY (kHz)
25
40
20
-25
0
75
100
125
60
80
100
50
A: MAX1044 with
BOOST = V+
B: ICL7600
C: MAX1044 with
BOOST = OPEN
B
A
C
1
10
0
10
1
10
2
10
3
10
4
10
5
5x10
5
QUIESCENT CURRENT
vs. OSCILLATOR FREQUENCY
MAX1044-Fig 11
OSCILLATOR FREQUENCY (Hz)
QUIESCENT CURRENT (µA)
100
10
1000
10,000
USING
EXTERNAL
HCMOS
OSCILLATOR
USING
EXTERNAL
CAPACITOR