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CAT660EVA Datasheet(PDF) 10 Page - ON Semiconductor

Part # CAT660EVA
Description  100 mA CMOS Charge Pump Inverter/Doubler
PDF  15 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CAT660EVA Datasheet(HTML) 10 Page - ON Semiconductor

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CAT660
http://onsemi.com
10
Typical Applications
Voltage Inversion Positive−to−Negative
The CAT660 easily provides a negative supply voltage from a positive supply in the system. Figure 18 shows a typical circuit.
The LV pin may be left floating for positive input voltages at or above 3.3 V.
Figure 18. Voltage Inverter
+
C2
CAT660
NC
+
C1
BOOST/FC
V+
OSC
LV
OUT
1
2
3
4
8
7
6
5
CAP+
CAP−
GND
VIN
1.5 V to 5.5 V
VOUT = −VIN
Positive Voltage Doubler
The voltage doubler circuit shown in Figure 19 gives VOUT = 2 x VIN for input voltages from 2.5 V to 5.5 V.
Figure 19. Voltage Doubler
CAT660
+
BOOST/FC
+
2.5 V to 5.5 V
1N5817*
*SCHOTTKY DIODE IS FOR START−UP ONLY
V+
OSC
LV
OUT
C2
150 mF
VOUT = 2VIN
8
7
6
5
1
2
3
4
C1
150 mF
CAP+
CAP−
GND
VIN



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