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SP3203EEY-L Datasheet, PDF (10/16 Pages) Exar Corporation – 3V RS-232 Serial Transceiver with Logic Selector and 15kV ESD Protection | |||
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VCC = +5V
+
C1 â
â5V
+5V
+
C2 â
â5V
C4
+ â VDD Storage Capacitor
â + VSS Storage Capacitor
C3
Figure 5. Charge Pump - Phase 1
VCC = +5V
C4
+
+
+ â VDD Storage Capacitor
C1 â
C2 â
â + VSS Storage Capacitor
â10V
C3
Figure 6. Charge Pump - Phase 2
[
T
a) C2+
1
T
2
2
]
+6V
0V
0V
b) C2-
T
-6V
Ch1 2.00V Ch2 2.00V M 1.00ms Ch1 1.96V
Figure 7. Charge Pump Waveforms
VCC = +5V
+
C1 â
â5V
+5V
+
C2 â
â5V
C4
+ â VDD Storage Capacitor
â + VSS Storage Capacitor
C3
Figure 8. Charge Pump - Phase 3
VCC = +5V
+10V
+
C1 â
+
C2 â
C4
+ â VDD Storage Capacitor
â + VSS Storage Capacitor
C3
Figure 9. Charge Pump - Phase 4
Exar Corporation 48720 Kato Road, Fremont CA, 94538 ⢠(510)668-7017 ⢠www.exar.com
10
SP3203E_100_120810
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