MAX829 ONSEMI [ON Semiconductor], MAX829 Datasheet - Page 12

• Manufacturer Part Number: MAX829
• Description: Switched Capacitor Voltage Converter
• Manufacturer: ONSEMI [ON Semiconductor]

the forward voltage drop of each external diode. The performance characteristics for the above converter are shown below.
Note that curves A and C show the circuit performance with economical 1N4148 diodes, while curves B and D are with lower
loss MBRA120E Schottky diodes.
A single device can be used to construct a positive voltage tripler. The output voltage is approximately equal to 3V
10.0
8.0
6.0
4.0
2.0
0
T
A
Output Voltage vs. Output Current MAX828
= 25 C
Figure 37. Doubler Load Regulation,
V
in
10
I
out
, OUTPUT CURRENT (mA)
+
20
B
A
Curve
1
2
3
C
D
A
B
Figure 39. Positive Output Voltage Tripler
OSC
30
D
C
V
in
3.0
3.0
5.0
5.0
(V)
MAX828, MAX829
http://onsemi.com
5
4
MBRA120E
MBRA120E
1N4148
1N4148
Diodes
40
12
10.0
MAX829: Capacitors = 3.3 mF
MAX828: Capacitors = 10 mF
8.0
6.0
4.0
2.0
+
0
MAX828
R
T
out
32.5
27.1
26.0
21.2
Output Voltage vs. Output Current MAX829
A
= 25 C
(W)
Figure 38. Doubler Load Regulation,
+
MAX829
R
10
I
+
out
out
32.2
25.7
25.1
19.0
, OUTPUT CURRENT (mA)
(W)
+
20
B
A
V
out
30
D
C
in
minus
40