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STW41411 Datasheet(PDF) 23 Page - STMicroelectronics |
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STW41411 Datasheet(HTML) 23 Page - STMicroelectronics |
23 / 31 page Application information STw4141 22/30 4.6.2 Input capacitor (CIN selection) Input capacitor of 10 µF ceramic low ESR capacitor should be used to reduce switching losses. It should be placed as close as possible to supply pins VDD and PVDD. The connection traces should be wide and short to minimize impedance. 4.6.3 Output capacitors (COUT selection) The selection of COUT is driven by the required ESR to minimize voltage ripple and load step transients. There are two possibilities for output capacitors: either a 22 µF is connected to ground or two 10 µF ceramic are used to reduce ESR and switching losses. The capacitor should be placed as close as possible to VOUTx pins. The connection traces should be wide and short to minimize impedance. 4.6.4 Capacitors selection Table 9. Bill of Material: capacitor selection Component Supplier Part number Value Case size C IN MURATA GRM188R60J106ME47D 10 µF, 6.3V 0603 GRM21BR60J106ME15L 10 µF, 6.3V 0805 TAIYO YUDEN JMK212BJ106MG-T 10 µF, 6.3V 0805 TDK C1608X5R0J106MT 10 µF, 6.3V 0603 C2012X5R0J106MT 10 µF, 6.3V 0805 COUT1, COUT2 MURATA GRM188R60J106ME47D 2 x 10 µF, 6.3V 2 x 0603 GRM21BR60J106ME15L 2 x 10 µF, 6.3V 2 x 0805 GRM21BR60J226ME15L 22 µF, 6.3V 0805 TAYIO YUDEN JMK212BJ106MG-T 2 x 10 µF, 6.3V 2 x 0805 JMK212BJ226MG-T 22 µF, 6.3V 0805 TDK C1608X5R0J106MT 2 x 10 µF, 6.3V 2 x 0603 C2012X5R0J106MT 2 x 10 µF, 6.3V 2 x 0805 C2012X5R0J226MT 22 µF, 6.3V 0805 |
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