MAX1682 Maxim, MAX1682 Datasheet - Page 4

• Manufacturer Part Number: MAX1682
• Description: Switched-Capacitor Voltage Doublers
• Manufacturer: Maxim

Switched-Capacitor Voltage Doublers
(Typical Operating Circuit, V
noted.)
4
20mV/div
12.5
12.0
11.5
11.0
_______________________________________________________________________________________
10
V
9
8
7
6
5
4
3
2
1
0
OUT
-40
0
I
LOAD
MAX1682 OSCILLATOR FREQUENCY
V
5
V
IN
IN
= 5mA, V
-20
MAX1683 OUTPUT VOLTAGE
= 3.3V
= 5V
10 15 20
V
vs. OUTPUT CURRENT
IN
V
vs. TEMPERATURE
OUTPUT CURRENT (mA)
IN
= 2V
TEMPERATURE (°C)
OUTPUT RIPPLE
IN
0
= 2V
= 5V, C1 = C2 = 10 F
MAX1682
20 s/div
20
25 30 35
V
IN
= 3.3V
IN
40
V
= +5V, C1 = C2 = 10µF for the MAX1682 and 3.3µF for the MAX1683, T
IN
= 5V
40
60
45
80
50
20mV/div
Typical Operating Characteristics (continued)
100
V
40
38
36
34
32
30
28
98
96
94
92
90
88
86
84
82
80
OUT
-40
0
I
LOAD
MAX1683 OSCILLATOR FREQUENCY
= 5mA, V
-20
V
5
V
MAX1682 EFFICIENCY vs.
IN
IN
= 2V
= 5V
vs. TEMPERATURE
LOAD CURRENT (mA)
TEMPERATURE (°C)
IN
LOAD CURRENT
OUTPUT RIPPLE
V
10
0
IN
= 5V, C1 = 3.3 F, C2 = 10 F
= 3.3V
MAX1683
20 s/div
20
15
V
IN
40
20
= 3.3V
V
V
IN
IN
= 2V
60
25
= 5V
80
30
100
2.5
2.0
1.5
1.0
0.5
10
98
96
94
92
90
88
86
84
82
80
9
8
7
6
5
4
3
2
1
0
0
700
0
0
300
5
A
MAX1682 OUTPUT VOLTAGE
5
MAX1683 EFFICIENCY vs.
100 70
10 15 20
= +25°C, unless otherwise
vs. OUTPUT CURRENT
V
START-UP VOLTAGE
vs. RESISTIVE LOAD
OUTPUT CURRENT (mA)
V
IN
MAX1683
LOAD CURRENT (mA)
IN
LOAD CURRENT
10
MAX1682
= 2V
= 2V
30 10
R
LOAD
25 30 35
15
V
(k )
IN
= 3.3V
7
20
V
3
IN
V
V
IN
IN
= 3.3V
40
= 5V
1 0.7 0.3
= 5V
25
45
50
30