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LM3519 Datasheet(PDF) 13 Page - National Semiconductor (TI) |
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LM3519 Datasheet(HTML) 13 Page - National Semiconductor (TI) |
13 / 14 page Application Information (Continued) I OUT vs VIN 20160239 LAYOUT GUIDELINES The input capacitor, C IN, must be placed close to the LM3519. Placing C IN close to the device will reduce the metal trace resistance effect on input voltage ripple. Metal trace connections for the C OUT capacitor can increase the effective series resistance, which affects output voltage ripple and efficiency. Trace connections to the inductor should be short and wide to reduce power dissipation, in- crease overall efficiency and reduce EMI radiation. The di- ode, like the inductor, should have trace connections that are short and wide to reduce power dissipation and increase overall efficiency. For more details regarding layout guide- lines for switching regulators, refer to Applications Note AN- 1149. www.national.com 13 |
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