Typical operating characteristics (continued) – Rainbow Electronics MAX1683 User Manual
Page 4
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
40
60
80
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
40
60
80
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
10 15 20
5
25 30 35
45
40
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
0
10 15 20
5
25 30 35
45
40
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
20
µs/div
V
OUT
20mV/div
I
LOAD
= 5mA, V
IN
= 5V, C1 = C2 = 10
µF
MAX1682
OUTPUT RIPPLE
MAX1682toc16
80
86
84
82
88
90
92
94
96
98
100
0
10
5
15
20
25
30
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
0
10
5
15
20
25
30
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 = 3.3
µF, C2 = 10µF
20
µs/div
V
OUT
20mV/div
0
0.5
1.0
1.5
2.0
2.5
700
30 10
100 70
300
7
3
1
0.7 0.3
START-UP VOLTAGE
vs. RESISTIVE LOAD
MAX1682toc18
R
LOAD
(k
Ω)
V
START
(V)
MAX1682
MAX1683