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L6933H1.2 Datasheet(PDF) 9 Page - STMicroelectronics |
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L6933H1.2 Datasheet(HTML) 9 Page - STMicroelectronics |
9 / 12 page L6933H1.2 Components selection 9/12 8 Components selection 8.1 Input capacitor The input capacitor value depends on a lot of factors such as load transient requirements, input source (battery or DC/DC converter) and its distance from the input cap. Usually a 47 µF is enough for any application but a much lower value can be sufficient in many cases. 8.2 Output capacitor The output capacitor choice depends basically on the load transient requirements. Tantalum, Special Polymer, POSCAP and aluminum capacitors are good and offer very low ESR values. Multilayer ceramic caps have the lowest ESR and can be used for particular applications without affecting the loop stability. Below a list of some suggested capacitor manufacturers Table 7. Suggested capacitor Manufacturer Type Cap value (µF) Rated voltage (V) Murata Ceramic 1 to 47 4 to 16 Panasonic Ceramic 1 to 47 4 to 16 Tayo Yuden Ceramic 1 to 47 4 to 16 TDK Ceramic 1 to 47 4 to 16 Tokin Ceramic 1 to 47 4 to 16 SANYO Poscap 1 to 47 4 to 16 Panasonic SP 1 to 47 4 to 16 Kemet Tantalum 1 to 47 4 to 16 |
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