Datenblatt-Suchmaschine für elektronische Bauteile |
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TC1240AECHTR Datenblatt(PDF) 9 Page - Microchip Technology |
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TC1240AECHTR Datenblatt(HTML) 9 Page - Microchip Technology |
9 / 16 page 2003 Microchip Technology Inc. DS21516C-page 9 TC1240/TC1240A 5.4 Input Supply Bypassing The VIN input should be capacitively bypassed to reduce AC impedance and minimize noise effects due to the switching internal to the device. The recommended capacitor should be a large value (at least equal to C1) connected from the input to GND. 5.5 Shutdown Input The TC1240 and TC1240A are disabled when SHDN is high, and enabled when SHDN is low. This input cannot be allowed to float. FIGURE 5-3: Test Circuit. 5.6 Voltage Doubler The most common application for charge pump devices is the doubler (Figure 5-3). This application uses two external capacitors – C1 and C2 (plus a power supply bypass capacitor, if necessary). The output is equal to 2 x VIN minus any voltage drops due to loading. Refer to Table 5-1 and Table 5-2 for capacitor selection. 3 1 2 4 5 C3 C1 C2 VIN VOUT RL TC1240 TC1240A C- VIN OUT C+ GND SHDN 6 + + + Device C1 C2 C3 TC1240 TC1240A 3.3µF 3.3 µF 3.3µF |
Ähnliche Teilenummer - TC1240AECHTR |
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Ähnliche Beschreibung - TC1240AECHTR |
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