- 您现在的位置：买卖IC网 > PDF目录4051 > MPC8280ZUQLDA (Freescale Semiconductor)IC MPU POWERQUICC II 480-TBGA PDF资料下载
参数资料
| 型号： | MPC8280ZUQLDA |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 5/83页 |
| 文件大小： | 0K |
| 描述： | IC MPU POWERQUICC II 480-TBGA |
| 标准包装： | 21 |
| 系列： | MPC82xx |
| 处理器类型： | 32-位 MPC82xx PowerQUICC II |
| 速度： | 333MHz |
| 电压： | 1.5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 480-LBGA |
| 供应商设备封装： | 408-TBGA（37.5x37.5） |
| 包装： | 托盘 |
第1页第2页第3页第4页当前第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页
MPC8280 PowerQUICC II Family Hardware Specifications, Rev. 2
Freescale Semiconductor
13
Thermal Characteristics
4.2
Estimation with Junction-to-Case Thermal Resistance
Historically, the thermal resistance has frequently been expressed as the sum of a junction-to-case thermal
resistance and a case-to-ambient thermal resistance:
RθJA = RθJC + RθCA
where:
RθJA = junction-to-ambient thermal resistance (C/W)
RθJC = junction-to-case thermal resistance (C/W)
RθCA = case-to-ambient thermal resistance (C/W)
RθJC is device related and cannot be influenced by the user. The user adjusts the thermal environment to
affect the case-to-ambient thermal resistance, RθCA. For instance, the user can change the air flow around
the device, add a heat sink, change the mounting arrangement on the printed circuit board, or change the
thermal dissipation on the printed circuit board surrounding the device. This thermal model is most useful
for ceramic packages with heat sinks where some 90% of the heat flows through the case and the heat sink
to the ambient environment. For most packages, a better model is required.
4.3
Estimation with Junction-to-Board Thermal Resistance
A simple package thermal model which has demonstrated reasonable accuracy (about 20%) is a
two-resistor model consisting of a junction-to-board and a junction-to-case thermal resistance. The
junction-to-case thermal resistance covers the situation where a heat sink is used or where a substantial
amount of heat is dissipated from the top of the package. The junction-to-board thermal resistance
describes the thermal performance when most of the heat is conducted to the printed circuit board. It has
been observed that the thermal performance of most plastic packages, especially PBGA packages, is
strongly dependent on the board temperature.
If the board temperature is known, an estimate of the junction temperature in the environment can be made
using the following equation:
TJ = TB + (RθJB × PD)
where:
RθJB = junction-to-board thermal resistance (C/W)
TB = board temperature (C)
PD = power dissipation in package
If the board temperature is known and the heat loss from the package case to the air can be ignored,
acceptable predictions of junction temperature can be made. For this method to work, the board and board
mounting must be similar to the test board used to determine the junction-to-board thermal resistance,
namely a 2s2p (board with a power and a ground plane) and by attaching the thermal balls to the ground
plane.
相关PDF资料 |
PDF描述 |
|---|---|
| IDT71T75802S133PFG | IC SRAM 18MBIT 133MHZ 100TQFP |
| MPC8280VVQLDA | IC MPU POWERQUICC II 480-TBGA |
| IDT71T75602S150PFG | IC SRAM 18MBIT 150MHZ 100TQFP |
| P1020NSE2HFB | IC MPU 800MHZ 689-TEPBGA2 |
| IDT71T75602S133PFG | IC SRAM 18MBIT 133MHZ 100TQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC8280ZUT | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:PowerQUICC II⑩ Family Hardware Specifications |
| MPC8280ZUUPE | 制造商:Freescale Semiconductor 功能描述: |
| MPC8280ZUUPEA | 功能描述:微处理器 - MPU PQ II HIP 7 REV A RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MPC8280ZUUPEA | 制造商:Freescale Semiconductor 功能描述:IC 32BIT MPU 450MHZ TBGA-480 |
| MPC82E52 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Megawin's product 8051核心增强型单片机，指令周期为1T，内部模块丰富 |
发布紧急采购，3分钟左右您将得到回复。