Datenblatt-Suchmaschine für elektronische Bauteile |
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LM3350 Datenblatt(PDF) 6 Page - National Semiconductor (TI) |
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LM3350 Datenblatt(HTML) 6 Page - National Semiconductor (TI) |
6 / 8 page Typical Application Circuits Layout Information LAYOUT CONSIDERATIONS The LM3350’s high switching frequency (800 kHz) makes a good layout important. Figure 4 illustrates a typical layout. It is im- portant to keep the distance short between the four capacitors and the IC. Wide traces and grounding are also recommended. These steps will minimize trace inductance and high frequency ringing. Of the four capacitors, C high and Clow have the highest value of di/dt. It is therefore most important to keep them close to the IC. The ground lead that C high and Clow share should also be kept wide and short. The location of the diode (D1) used in the step-up configuration is not critical. This diode is only used during the initial turn on of the IC. D1 is not needed in step-down applications. DS100002-13 FIGURE 2. Step-Up Converter DS100002-14 FIGURE 3. Step-Down Converter www.national.com 6 |
Ähnliche Teilenummer - LM3350 |
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Ähnliche Beschreibung - LM3350 |
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