MAX829 ONSEMI [ON Semiconductor], MAX829 Datasheet - Page 10

• 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 negative voltage tripler. The output voltage is approximately equal to −3V
−10.0
−2.0
−4.0
−6.0
−8.0
0.0
0
Output Voltage vs. Output Current MAX828
Figure 31. Doubler Load Regulation,
V
in
10
I
A
B
out
, OUTPUT CURRENT (mA)
+
20
1
2
3
Curve
A
B
C
D
Figure 33. Negative Output Voltage Tripler
OSC
V
30
C
D
in
3.0
3.0
5.0
5.0
T
(V)
MAX828, MAX829
A
5
4
http://onsemi.com
= 25 C
MBRA120E
MBRA120E
+
1N4148
1N4148
Diodes
40
10
MAX829: Capacitors = 3.3 mF
MAX828: Capacitors = 10 mF
−10.0
−2.0
−4.0
−6.0
−8.0
+
0
MAX828
R
out
122
114
Output Voltage vs. Output Current MAX829
96
91
+
(W)
Figure 32. Doubler Load Regulation,
MAX829
R
I
+
A
B
10
out
out
106
118
90
87
, OUTPUT CURRENT (mA)
(W)
+
20
C
D
+
−V
out
30
T
A
= 25 C
in
minus
40