Electronic Components Datasheet Search |
|
LP3881 Datasheet(PDF) 10 Page - National Semiconductor (TI) |
|
|
LP3881 Datasheet(HTML) 10 Page - National Semiconductor (TI) |
10 / 12 page Application Hints (Continued) As shown in the graph below, increasing the copper area beyond 1 square inch produces very little improvement. The minimum value for θ JA for the TO-263 package mounted to a PCB is 32˚C/W. Figure 2 shows the maximum allowable power dissipation for TO-263 packages for different ambient temperatures, assuming θ JA is 35˚C/W and the maximum junction tempera- ture is 125˚C. HEATSINKING PSOP PACKAGE Heatsinking for the PSOP-8 package is accomplished by allowing heat to flow through the ground slug on the bottom of the package into the copper on the PC board. The heat slug must be soldered down to a copper plane to get good heat transfer. It can also be connected through vias to inter- nal copper planes. Since the heat slug is at ground potential, traces must not be routed under it which are not at ground potential. Under all possible conditions, the junction tem- perature must be within the range specified under operating conditions. Figure 3 shows a curve for the θ JA of the PSOP package for different copper area sizes using a typical PCB with one ounce copper in still air. 20063026 FIGURE 2. Maximum power dissipation vs ambient temperature for TO-263 package 20063054 FIGURE 3. θ JA vs. Copper (1 ounce) Area for PSOP Package www.national.com 10 |
Similar Part No. - LP3881 |
|
Similar Description - LP3881 |
|
|
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 |