Rainbow-electronics MAX1683 Manual de usuario Pagina 4

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MAX1682/MAX1683
Switched-Capacitor Voltage Doublers
4 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Typical Operating Circuit, V
IN
= +5V, C1 = C2 = 10µF for the MAX1682 and 3.3µF for the MAX1683, T
A
= +25°C, unless otherwise
noted.)
11.0
11.5
12.0
12.5
-40 0 20-20 406080
MAX1682 OSCILLATOR FREQUENCY
vs. TEMPERATURE
MAX1682/83 TOC10
TEMPERATURE (°C)
OSCILLATOR FREQUENCY (kHz)
V
IN
= 5V
V
IN
= 3.3V
V
IN
= 2V
28
32
30
36
34
38
40
-40 0 20-20 406080
MAX1683 OSCILLATOR FREQUENCY
vs. TEMPERATURE
MAX1682/83 TOC11
TEMPERATURE (°C)
OSCILLATOR FREQUENCY (kHz)
V
IN
= 5V
V
IN
= 3.3V
V
IN
= 2V
0
2
1
4
3
6
5
7
9
8
10
0 1015205 253035 4540 50
MAX1682 OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX1682/83 TOC12
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
V
IN
= 5V
V
IN
= 3.3V
V
IN
= 2V
0
2
1
4
3
6
5
7
9
8
10
010152052530354540 50
MAX1683 OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX1682/83 TOC13
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
V
IN
= 5V
V
IN
= 3.3V
V
IN
= 2V
20µs/div
V
OUT
20mV/div
I
LOAD
= 5mA, V
IN
= 5V, C1 = C2 = 10µF
MAX1682
OUTPUT RIPPLE
MAX1682toc16
80
86
84
82
88
90
92
94
96
98
100
0105 15202530
MAX1682 EFFICIENCY vs.
LOAD CURRENT
MAX1682/83 TOC14
LOAD CURRENT (mA)
EFFICIENCY (%)
V
IN
= 5V
V
IN
= 3.3V
V
IN
= 2V
80
86
84
82
88
90
92
94
96
98
100
0105 15202530
MAX1683 EFFICIENCY vs.
LOAD CURRENT
MAX1682/83 TOC15
LOAD CURRENT (mA)
EFFICIENCY (%)
V
IN
= 5V
V
IN
= 3.3V
V
IN
= 2V
MAX1683
OUTPUT RIPPLE
MAX1682toc17
I
LOAD
= 5mA, V
IN
= 5V, C1 = 3.3µF, C2 = 10µF
20µs/div
V
OUT
20mV/div
0
0.5
1.0
1.5
2.0
2.5
700 30 10100 70300 7 3 1 0.7 0.3
START-UP VOLTAGE
vs. RESISTIVE LOAD
MAX1682toc18
R
LOAD
(k)
V
START
(V)
MAX1682
MAX1683
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