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AS1382A-BWLT-15 Datasheet(PDF) 11 Page - ams AG |
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AS1382A-BWLT-15 Datasheet(HTML) 11 Page - ams AG |
11 / 20 page ams Datasheet Page 11 [v1-04] 2015-Jun-19 Document Feedback AS1382 − Application Information Ceramic Input and Output Capacitors When choosing ceramic capacitors for CIN and COUT, the X5R or X7R dielectric formulations are recommended. These dielectrics have the best temperature and voltage characteristics for a given value and size. Y5V and Z5U dielectric capacitors, aside from their wide variation in capacitance over temperature, become resistive at high frequencies and therefore should not be used. Figure 14: Recommended Input and Output Capacitors Because ceramic capacitors lose a lot of their initial capacitance at their maximum rated voltage, it is recommended that either a higher input capacity or a capacitance with a higher rated voltage is used. Feedback Resistor Selection In the AS1382-AD, the output voltage is set by an external resistor divider connected to FB. This circuitry allows for remote voltage sensing and adjustment. Figure 15: Adjustable Variant AS1382-AD: Shows the application diagram for the adjustable output version with the external resistor divider Part Number C TC Code Voltage Rating Dimensions (L/W/H) Manufacturer GRM21BR61E475KA12L 4.7uF X5R 25V 0805 www.murata.com GRM219R60J106KE19D 10uF X5R 6.3V 0805 www.murata.com SW FB GND 1uH 10uF 0.58V ≤ VOUT ≤ 3.35V COUT R1 R2 AS1382-AD |
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