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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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CAT661ESA Fiches technique(PDF) 12 Page - Catalyst Semiconductor |
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CAT661ESA Fiches technique(HTML) 12 Page - Catalyst Semiconductor |
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12 / 16 page  CAT661 12 Doc. No. 5003, Rev. J BATTERY VOLTAGE SPLITTER Positive and negative voltages that track each other can be obtained from a battery. Figure 11 shows how a 9V battery can provide symmetrical positive and negative voltages equal to one-half the battery voltage. CASCADE OPERATION FOR HIGHER NEGATIVE VOLTAGES The CAT661 can be cascaded as shown in figure 12 to generate more negative voltage levels. The output resistance is approximately the sum of the individual CAT661 output resistance. VOUT= -N x VIN, where N represents the number of cascaded devices. Figure 11: Battery Splitter Figure 12: Cascading to Increase Output Voltage + - (-4.5V) 1 2 3 4 8 7 6 5 CAT661 + BOOST/FC CAP+ GND CAP- V+ OSC LV OUT + (4.5V) 3V < VBAT < 11V VBAT 9V BATTERY VBAT 2 VBAT 2 + C2 2 3 4 8 5 CAT661 "1" + C1 + CAT661 "N" 2 3 4 8 5 C1N +VIN + C2 VOUT = -NVIN |
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