MAX1044 Datasheet, PDF (4/12 Pages) Maxim Integrated Products – Switched-Capacitor Voltage Converters

Switched-Capacitor Voltage Converters
____________________________Typical Operating Characteristics (continued)
(V+ = 5V; C_BYPASS = 0.1µF; C1 = C2 = 10µF; LV = open; OSC = open; T_A = +25°C; unless otherwise noted.)
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 75 100 125
TEMPERATURE (°C)
QUIESCENT CURRENT
vs. SUPPLY VOLTAGE
2000
1000
A
B
100
C
D
10
A: MAX1044, BOOST = V+, LV = GND
B: MAX1044, BOOST = V+, LV = OPEN
C: ICL7660 and MAX1044 with
1
BOOST = OPEN, LV = GND;
ABOVE 5V, MAX1044 ONLY
D: ICL7660 and MAX1044 with
BOOST = OPEN, LV = OPEN
0.1
1 2 3 4 5 6 7 8 9 10
SUPPLY VOLTAGE (V)
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)
QUIESCENT CURRENT
vs. TEMPERATURE
500
400
300
MAX1044 with
BOOST = V+
200
100
0
-50
ICL7660, MAX1044 with BOOST = OPEN
-25 0 25 50 75 100 125
TEMPERATURE (°C)
1000
900
800
700
600
500
400
300
200
100
0
10¹
OUTPUT RESISTANCE
vs. OSCILLATOR FREQUENCY
EXTERNAL
HCMOS
OSCILLATOR
10²
10³
10⁴
10⁵
FREQUENCY (Hz)
OUTPUT RESISTANCE
vs. SUPPLY VOLTAGE
200
180
160
140
120
100
80
60
40
20
0
1 2 3 4 5 6 7 8 9 10
SUPPLY VOLTAGE (V)
OUTPUT RESISTANCE
vs. TEMPERATURE
80
70
60
ICL7660,
MAX1044 with
BOOST = OPEN
50
40
30
MAX1044 with
BOOST = V+
20
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
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