 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
MPC5553MVM112 Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc |
|
||||||||||||||||||||||||||||||
MPC5553MVM112 Datasheet(HTML) 7 Page - Freescale Semiconductor, Inc |
|
|
7 / 66 page  Electrical Characteristics MPC5553 Microcontroller Data Sheet, Rev. 2.0 Freescale Semiconductor 7 • Construction of the application board (number of planes) • Effective size of the board which cools the component • Quality of the thermal and electrical connections to the planes • Power dissipated by adjacent components Connect all the ground and power balls to the respective planes with one via per ball. Using fewer vias to connect the package to the planes reduces the thermal performance. Thinner planes also reduce the thermal performance. When the clearance between the vias leave the planes virtually disconnected, the thermal performance is also greatly reduced. As a general rule, the value obtained on a single-layer board is within the normal range for the tightly packed printed circuit board. The value obtained on a board with the internal planes is usually within the normal range if the application board has: • One oz (35 micron nominal thickness) internal planes • Components are well separated • Overall power dissipation on the board is less than 0.02 W/cm2 The thermal performance of any component depends on the power dissipation of the surrounding components. In addition, the ambient temperature varies widely within the application. For many natural convection and especially closed box applications, the board temperature at the perimeter (edge) of the package is approximately the same as the local air temperature near the device. Specifying the local ambient conditions explicitly as the board temperature provides a more precise description of the local ambient conditions that determine the temperature of the device. At a known board temperature, the junction temperature is estimated using the following equation: TJ = TB + (RθJB × PD) where: TJ = junction temperature (oC) TB = board temperature at the package perimeter (oC/W) RθJB = junction-to-board thermal resistance (oC/W) per JESD51-8 PD = power dissipation in the package (W) When the heat loss from the package case to the air does not factor into the calculation, an acceptable value for the junction temperature is predictable. Ensure the application board is similar to the thermal test condition, with the component soldered to a board with internal planes. The thermal resistance is expressed as the sum of a junction-to-case thermal resistance plus a case-to-ambient thermal resistance: RθJA = RθJC + RθCA where: RθJA = junction-to-ambient thermal resistance (oC/W) RθJC = junction-to-case thermal resistance (oC/W) RθCA = case-to-ambient thermal resistance (oC/W) |
Similar Part No. - MPC5553MVM112 |
|
Similar Description - MPC5553MVM112 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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
