MAX829 ONSEMI [ON Semiconductor], MAX829 Datasheet - Page 9

• 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 doubler. The output voltage is approximately equal to −2V
−10.0
−1.0
−2.0
−3.0
−4.0
−5.0
−6.0
−7.0
−8.0
−9.0
0
Output Voltage vs. Output Current MAX828
Figure 28. Cascade Load Regulation,
10
I
A
out
, OUTPUT CURRENT (mA)
V
in
+
20
Figure 30. Negative Output Voltage Doubler
1
2
3
B
30
Curve
OSC
C
D
A
B
MAX828, MAX829
http://onsemi.com
V
5
4
in
3.0
5.0
3.0
5.0
40
(V)
9
+
−10.0
−1.0
−2.0
−3.0
−4.0
−5.0
−6.0
−7.0
−8.0
−9.0
R
0
MAX829: Capacitors = 3.3 mF
MAX828: Capacitors = 10 mF
out
173
141
179
147
Output Voltage vs. Output Current MAX829
(W)
+
Figure 29. Cascade Load Regulation,
I
+
10
out
C
, OUTPUT CURRENT (mA)
+
20
−V
D
out
30
in
minus
40