 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
CAT4240TD-GT3 Datasheet(PDF) 11 Page - Catalyst Semiconductor |
|
||||||||||||||||||||||||||||||
CAT4240TD-GT3 Datasheet(HTML) 11 Page - Catalyst Semiconductor |
|
|
11 / 14 page  CAT4240 © Catalyst Semiconductor, Inc. 11 Doc. No. MD-5026 Rev. C Characteristics subject to change without notice BOARD LAYOUT The CAT4240 is a high-frequency switching regulator. The traces that carry the high-frequency switching current have to be carefully laid out on the board in order to minimize EMI, ripple and noise in general. The thicker lines on Figure 4 show the switching current path. All these traces have to be short and wide enough to minimize the parasitic inductance and resistance. The loop shown on Figure 4 corresponds to the current path when the CAT4240 internal switch is closed. On Figure 5 is shown the current loop, when the CAT4240 switch is open. Both loop areas should be as small as possible. Capacitor C1 has to be placed as close as possible to the VIN pin and GND. The capacitor C2 has to be connected separately to the top LED anode. A ground plane under the CAT4240 allows for direct connection of the capacitors to ground. The resistor R1 must be connected directly to the GND pin of the CAT4240 and not shared with the switching current loops and any other components. Figure 4. Closed-switch Current Loop Figure 5. Open-switch Current Loop Figure 6. Recommended PCB Layout VIN CAT4240 VIN LD VOUT R1 C1 FB Switch Closed SHDN SW GND C2 VIN CAT4240 VIN LD VOUT R1 C1 FB Switch Open SHDN SW GND C2 |
Similar Part No. - CAT4240TD-GT3 |
|
Similar Description - CAT4240TD-GT3 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
