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CAT661ESA-TE13 Datasheet(PDF) 11 Page - Catalyst Semiconductor |
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CAT661ESA-TE13 Datasheet(HTML) 11 Page - Catalyst Semiconductor |
11 / 16 page CAT661 11 Doc. No. 5003, Rev. J POSITIVE VOLTAGE DOUBLER The voltage doubler circuit shown in figure 9 gives VOUT = 2 x VIN for input voltages from 2.5V to 5.5V. PRECISION VOLTAGE DIVIDER A precision voltage divider is shown in figure 10. With load currents under 100nA, the voltage at pin 2 will be within 0.002% of V+/2 . Figure 9: Voltage Doubler Figure 10: Precision Voltage Divider (Load ≤ 100nA) 1 2 3 4 8 7 6 5 CAT661 + BOOST/FC CAP+ GND CAP- VOUT = 2VIN + VIN 2.5V to 5.5V 1N5817* *SCHOTTKY DIODE IS FOR START-UP ONLY V+ OSC LV OUT 1 2 3 4 8 7 6 5 + V+ 3V to 11V + BOOST/FC CAP+ GND CAP- V+ OSC LV OUT CAT661 + 0.002% V+ 2 IL < 100nA |
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