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BD2045AFJ Datasheet(PDF) 10 Page - Rohm |
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BD2045AFJ Datasheet(HTML) 10 Page - Rohm |
10 / 13 page BD2045AFJ, BD2055AFJ Technical Note 10/12 www.rohm.com 2011.06 - Rev.C © 2011 ROHM Co., Ltd. All rights reserved. 0 100 200 300 400 500 600 0 25 50 75 100 125 150 AMBIENT TEMPERATURE: Ta [℃] ● Typical application circuit IN OUT Regulator OUT OUT OUT IN IN /OC GND VBUS D- D+ GND USB Controller VBUS D- D+ GND 5V(typ.) 10k~ 100kΩ CL CIN - + EN(/EN) Ferrite Beads Ferrite Beads Fig.40 Typical application circuit ● Application information When excessive current flows owing to output shortcircuit or so, ringing occurs by inductance of power source line to IC, and may cause bad influences upon IC actions. In order to avoid this case, connect a bypath capacitor by IN terminal and GND terminal of IC. 1μF or higher is recommended. Pull up /OC output by resistance 10kΩ to 100kΩ. Set up value which satisfies the application as CL and Ferrite Beads. This system connection diagram doesn’t guarantee operating as the application. The external circuit constant and so on is changed and it uses, in which there are adequate margins by taking into account external parts or dispersion of IC including not only static characteristics but also transient characteristics. ● Power dissipation character (SOP-J8) Fig.41 Power dissipation curve (Pd-Ta Curve) |
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