 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
SC2440AEVB датащи(PDF) 23 Page - Semtech Corporation |
|
|
|||||||||||||||||||||||||||||
SC2440AEVB датащи(HTML) 23 Page - Semtech Corporation |
|
|
23 / 28 page  23 Applications Information (Continued) necting the anodes of both freewheeling diodes close to the negative terminal of the input bypass capacitor mini- mizes size of the switched current loop. The input bypass capacitors should be placed close to the IN pins. Short- ening the traces of the SW and BST nodes reduces the parasitic trace inductance at these nodes. This not only reduces EMI but also decreases switching voltage spikes at these nodes. Figure 4 shows an example of external component placement around the SC2440A. The input bypass capaci- tor C 5, the output filtering capacitors and the freewheel- ing diodes are grounded on the power ground plane. The feedback resistor dividers, the compensation networks and the soft-start capacitors are to be tied to analog ground. The frequency-setting resistor R 9 is placed next to the ROSC pin and is also connected to analog ground. The exposed pad should be soldered to a large power ground plane as the ground copper acts as a heat sink for the device. To ensure proper adhesion to the ground plane, avoid using large vias directly under the device. In Figure 4(a) two 2mil vias are placed at the edge of the underside pad. SC2440A Suggested PCB Layout for the SC2440A (a) Top Layer and (b) Bottom Layer Figure 14. (a) (b) |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
