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LM2685 Fiches technique(PDF) 8 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce LM2685
Description  Dual Output Regulated Switched Capacitor Voltage Converter
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2685 Fiches technique(HTML) 8 Page - National Semiconductor (TI)

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Application Information (Continued)
Inverter External Capacitors
As discussed in the +5 LDO Regulator External Capacitors section, the output resistance and ripple voltage are dependent on the
capacitance and ESR values of the external capacitors. A minimum of 1µF capacitor with good tolerance over temperature for ca-
pacitance and ESR values. The capacitance value can be increased without limit while still maintain high low ESR value. 2.2µF
capacitors are recommended for the two external capacitors, C
2 and C5 of the inverter.
DS101100-26
FIGURE 5. ESR Curve for C
OUT = 4.7µF
DS101100-27
FIGURE 6. ESR Curve for C
OUT =10µF
www.national.com
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