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LA7995M Folha de dados(PDF) 2 Page - Sanyo Semicon Device |
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LA7995M Folha de dados(HTML) 2 Page - Sanyo Semicon Device |
2 / 5 page 71598RM(KI) No. 5920-2/5 Ratings Unit Symbol Parameter Recommended supply voltage Operating supply voltage range 5 4.75 to 5.25 V V V CC V CCop Conditions Current drain Output voltage Output voltage fluctuation Output current Oscillation frequency I IN V OUT △V OUT I OUT f I O=1 mA, VCC=5V I O=1 mA, VCC=5V I O=1 mA, VIN=4.75 to 5.25V V O=29V C OSC=150pF 19 29 1.5 35 24 30.7 1.0 1.7 50 29 32 1.5 65 mA V V mA KHz Parameter Symbol Conditions Ratings min typ max Unit Operating Conditions at Ta = 25 °C Operating Characteristics at Ta = 25 °C Note: The above specifications are measured with external capacitance provided by three 0.33 µF chip capacitors(C1, C2, C3). Charge Pump Principle Figure 1 shows a charge pump circuit. Driving S1 and S2 with opposite phase produces a doubled voltage A11009 VCC S1 S2 VOUT≒2VCC Figrue 1 Chrage pump circuit In order to supply 30V from 5V, the LA7995M uses three charge pump circuits in series to produce a step-up factor of 2 x 2 x 2 = 8. LA7995M |
Nº de peça semelhante - LA7995M |
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Descrição semelhante - LA7995M |
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