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TRS202EIN Datasheet(PDF) 7 Page - Texas Instruments |
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TRS202EIN Datasheet(HTML) 7 Page - Texas Instruments |
7 / 19 page 11 10 8 1 2 3 4 7 ROUT2 DIN2 9 RIN1 16 13 12 15 14 DIN1 5 6 + – V CC GND ROUT1 + – CBYPASS =0.1 F, m + – + – RIN2 + – DOUT1 DOUT2 † C3canbeconnectedtoV orGND. CC NOTES: A .Resistorvaluesshownarenominal. C2+ C2– C1+ C1– V+ V– C1 0.1 F, m 6.3V C3 † 0.1 F m 16V C2 0.1 F, m 16V 5kW 5kW C4 0.1 F m , 16V B.Nonpolarizedceramiccapacitorsareacceptable.Ifpolarizedtantalumorelectrolyticcapacitorsareused,theyshouldbe connectedasshown. TRS202E www.ti.com SLLS847C – JULY 2007 – REVISED MAY 2010 APPLICATION INFORMATION Figure 4. Typical Operating Circuit and Capacitor Values Capacitor Selection The capacitor type used for C1-C4 is not critical for proper operation. The TRS202E requires 0.1-mF capacitors, although capacitors up to 10 mF can be used without harm. Ceramic dielectrics are suggested for the 0.1-mF capacitors. When using the minimum recommended capacitor values, make sure the capacitance value does not degrade excessively as the operating temperature varies. If in doubt, use capacitors with a larger (e.g., 2×) nominal value. The capacitors' effective series resistance (ESR), which usually rises at low temperatures, influences the amount of ripple on V+ and V–. Use larger capacitors (up to 10 mF) to reduce the output impedance at V+ and V–. Bypass VCC to ground with at least 0.1 mF. In applications sensitive to power-supply noise generated by the charge pumps, decouple VCC to ground with a capacitor the same size as (or larger than) the charge-pump capacitors (C1–C4). Copyright © 2007–2010, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): TRS202E |
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