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RT9554A Fiches technique(PDF) 9 Page - Richtek Technology Corporation |
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RT9554A Fiches technique(HTML) 9 Page - Richtek Technology Corporation |
9 / 10 page RT9554A 9 DS9554A-00 June 2014 www.richtek.com © Copyright 2014 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Figure 2. Derating Curve of Maximum Power Dissipation 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 0 25 50 75 100 125 Ambient Temperature (°C) Four-Layer PCB Layout Considerations Layout is very important for the RT9554A. If designed improperly, the PCB may radiate excessive noise. Certain points must be considered before starting a layout for the RT9554A. Connect an RC low pass filter to VCC, 0.1 μF, and 2.2Ω are recommended Connect a RC low pass filter to EN, 0.1 μF, and 1kΩ are recommended. Place the filter capacitor close to the IC. Current sense connections must always be made using Kelvin connections to ensure an accurate signal with the current limit resistor located at the device. All sensitive analog traces and components such as CSP, CSN, VCC, EN and FLAG , should be placed away form high voltage switching nodes to avoid coupling. |
Numéro de pièce similaire - RT9554A |
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Description similaire - RT9554A |
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