NCP1729_06 ONSEMI [ON Semiconductor], NCP1729_06 Datasheet - Page 9

• Manufacturer Part Number: NCP1729_06
• Description: Switched Capacitor Voltage Inverter
• Manufacturer: ONSEMI [ON Semiconductor]

minus 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.
−10.0
A single device can be used to construct a negative voltage doubler. The output voltage is approximately equal to −2.0 V
−2.0
−4.0
−6.0
−8.0
0
0
Figure 23. Doubler Load Regulation,
Output Voltage vs. Output Current
10
A
B
I
out
, OUTPUT CURRENT (mA)
V
in
20
C
D
+
Figure 22. Negative Output Voltage Doubler
1
2
3
Capacitors = 3.3 mF
30
T
OSC
A
= 25°C
http://onsemi.com
NCP1729
40
6
5
4
9
+
+
Curve
A
B
C
D
+
+
V
in
3.0
3.0
5.0
5.0
−V
(V)
out
MBRA120E
MBRA120E
All Diodes
1N4148
1N4148
R
out
107
118
91
85
(W)
in