- 您现在的位置：买卖IC网 > PDF目录20400 > DC1663A (Linear Technology)DEMO BOARD LTM4628 PDF资料下载
参数资料
| 型号： | DC1663A |
| 厂商： | Linear Technology |
| 文件页数： | 21/36页 |
| 文件大小： | 0K |
| 描述： | DEMO BOARD LTM4628 |
| 软件下载： | LTM4628 Spice Model |
| 设计资源： | LTM4628 Gerber Files DC1663A Design Files |
| 标准包装： | 1 |
| 系列： | µModule® |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 2，非隔离 |
| 输出电压： | 1.2V，1.5V |
| 电流 - 输出： | 8A，8A |
| 输入电压： | 4.5 ~ 26.5 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 400kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | LTM4628 |
第1页第2页第3页第4页第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页当前第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
LTM4628
APPLICATIONS INFORMATION
JUNCTION-TO-AMBIENT RESISTANCE (JESD 51-9 DEFINED BOARD)
JUNCTION-TO-CASE (TOP)
RESISTANCE
CASE (TOP)-TO-AMBIENT
RESISTANCE
JUNCTION
JUNCTION-TO-BOARD RESISTANCE
AMBIENT
μMODULE DEVICE
JUNCTION-TO-CASE
(BOTTOM) RESISTANCE
CASE (BOTTOM)-TO-BOARD
RESISTANCE
BOARD-TO-AMBIENT
RESISTANCE
4628 F10
Figure 10. Graphical Representation of JESD 51-12 Thermal Coefficients
As a practical matter, it should be clear to the reader that
no individual or sub-group of the four thermal resistance
parameters defined by JESD 51-12 or provided in the
Pin Configuration section replicates or conveys normal
operating conditions of a μModule regulator. For example,
in normal board-mounted applications, never does 100%
of the device’s total power loss (heat) thermally conduct
exclusively through the top or exclusively through bot-
tom of the μModule package—as the standard defines
for θ JCtop and θ JCbottom , respectively. In practice, power
loss is thermally dissipated in both directions away from
the package—granted, in the absence of a heat sink and
airflow, a majority of the heat flow is into the board.
Within the LTM4628, be aware there are multiple power
devices and components dissipating power, with a con-
sequence that the thermal resistances relative to different
junctions of components or die are not exactly linear with
respect to total package power loss. To reconcile this
complication without sacrificing modeling simplicity—
but also, not ignoring practical realities—an approach
has been taken using FEA software modeling along with
laboratory testing in a controlled-environment chamber
to reasonably define and correlate the thermal resistance
values supplied in this data sheet: (1) Initially, FEA software
is used to accurately build the mechanical geometry of
the LTM4628 and the specified PCB with all of the cor-
rect material coefficients along with accurate power loss
source definitions; (2) this model simulates a software-
defined JEDEC environment consistent with JESD 51-12
to predict power loss heat flow and temperature readings
at different interfaces that enable the calculation of the
JEDEC-defined thermal resistance values; (3) the model
and FEA software is used to evaluate the LTM4628 with
heat sink and airflow; (4) having solved for and analyzed
these thermal resistance values and simulated various
operating conditions in the software model, a thorough
laboratory evaluation replicates the simulate conditions
with thermocouples within a controlled environment
chamber while operating the device at the same power
loss as that which was simulated. The outcome of this
process and due diligence yields a set of derating curves
provided in other sections of this data sheet. After these
laboratory tests have been performed the θ JB and θ BA are
summed together to correlate quite well with the LTM4628
model with no airflow or heat sinking in a properly de-
fined chamber. This θ JB + θ BA value is shown in the Pin
Configuration section and should accurately equal the θ JA
value because approximately 100% of power loss flows
from the junction through the board into ambient with no
airflow or top mounted heat sink.
4628fe
For more information www.linear.com/LTM4628
21
相关PDF资料 |
PDF描述 |
|---|---|
| IFSC1008ABER220M01 | INDUCTOR POWER 22UH 0.5A SMD |
| GSC10DRYI | CONN EDGECARD 20POS DIP .100 SLD |
| AT24C08B-TH-T | IC EEPROM 8KBIT 1MHZ 8TSSOP |
| T95Z226K016LSAL | CAP TANT 22UF 16V 10% 2910 |
| 346-080-540-202 | CARDEDGE 80POS DUAL .125 GREEN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DC1666A | 功能描述:BOARD DEMO LED DRIVER LT3791 RoHS:否 类别:编程器，开发系统 >> 评估板 - LED 驱动器 系列:- 标准包装:1 系列:PowerWise® 电流 - 输出 / 通道:20mA 输出及类型:1，非隔离 输出电压:17V 特点:可调光 输入电压:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相关产品:LM3508TLX-ND - IC LED DRVR WHT BCKLGT 9USMDLM3508TLDKR-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLCT-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLTR-ND - IC LED DRVR WHT BCKLGT 9MICROSMD |
| DC1667 | 制造商:INTRONICS 制造商全称:INTRONICS 功能描述:15 Watt Triple Output DC-DC Converters |
| DC1668 | 制造商:INTRONICS 制造商全称:INTRONICS 功能描述:15 Watt Triple Output DC-DC Converters |
| DC1669 | 制造商:INTRONICS 制造商全称:INTRONICS 功能描述:15 Watt Triple Output DC-DC Converters |
| DC1669A | 功能描述:BOARD EVAL LTM4627 RoHS:否 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:LTM®, uModule® 标准包装:1 系列:- 主要目的:DC/DC，步降 输出及类型:1，非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND |
发布紧急采购，3分钟左右您将得到回复。