CAT661EVA-GT3 ON Semiconductor, CAT661EVA-GT3 Datasheet
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CAT661EVA-GT3
Specifications of CAT661EVA-GT3
Related parts for CAT661EVA-GT3
CAT661EVA-GT3 Summary of contents
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... PIN CONFIGURATION 1 BOOST/FC CAP+ GND CAP− (Top View) MARKING DIAGRAMS CAT661EVA CAT661EVA = CAT661EVA−GT3 ORDERING INFORMATION Device Package CAT661EVA−GT3 (Pb−Free) 1. All packages are RoHS−compliant (Lead−free, Halogen−free). 2. For information on tape and reel specifications, in- cluding part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifica- tions Brochure, BRD8011/D ...
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Typical Application 1 BOOST/ CAP+ OSC C1 + CAT661 3 LV GND CAP− OUT 100 mF Figure 1. Voltage Inverter Table 1. PIN DESCRIPTIONS Pin Number Name 1 Boost/FC Frequency Control for the internal ...
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Table 2. ABSOLUTE MAXIMUM RATINGS Parameters V+ to GND Input Voltage (Pins 1, 6 and 7) BOOST/FC and OSC Input Voltage Output Short−circuit Duration to GND (OUT may be shorted to GND for 1 sec without damage but shorting OUT ...
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Voltage Inverter BOOST/FC 2 CAP 100 mF GND 4 CAP− TYPICAL OPERATING CHARACTERISTICS (Typical characteristic curves are generated using the test circuit in Figure 3. Inverter test conditions are ...
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TYPICAL OPERATING CHARACTERISTICS 5.0 4.8 4.6 4.4 4.2 4 LOAD CURRENT (mA) Figure 8. Inverted Output Voltage vs. Load Open ...
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Voltage Doubler + 100 TYPICAL OPERATING CHARACTERISTICS (Typical characteristic curves are generated using the circuit in Figure 14. Doubler test conditions are GND, BOOST/FC = Open ...
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Application Information Circuit Description and Operating Theory The CAT661 switches capacitors to invert or double an input voltage. Figure 19 shows a simple switch capacitor circuit. In position 1 capacitor C1 is charged to voltage V1. The total charge on ...
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Oscillator Frequency Control The switching frequency can be raised, lowered or driven from an external source. Figure 22 shows a functional diagram of the oscillator circuit. The CAT661 oscillator has four control modes: Table 4. BOOST/FC OSC Pin Pin Connection ...
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Capacitor Selection Low ESR capacitors are necessary to minimize voltage losses, especially at high load currents. The exact values of C1 and C2 are not critical but low ESR capacitors are necessary. The ESR of capacitor C1, the pump capacitor, ...
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Capacitor Suppliers The following manufacturers supply low−ESR capacitors: Table 6. CAPACITOR SUPPLIERS Manufacturer Capacitor Type AVX/Kyocera TPS/TPS3 Vishay/Sprague 595 Sanyo MV−AX, UGX Nichicon F55 HC/HD Capacitor manufacturers continually introduce new series and offer different package styles recommended that ...
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Typical Applications Voltage Inversion Positive−to−Negative The CAT661 easily provides a negative supply voltage from a positive supply in the system. Figure 24 shows a typical circuit. The LV pin may be left floating for positive input voltages at or above ...
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Precision Voltage Divider A precision voltage divider is shown in Figure 26. With load currents under 100 nA, the voltage at pin 2 will be within 0.002% of V+/ ± 0.002 ≤ 100 nA L ...
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Cascade Operation for Higher Negative Voltages The CAT661 can be cascaded as shown in Figure 28 to generate more negative voltage levels. The output resistance is approximately the sum of the individual CAT661 output resistance − ...
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