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参数资料
| 型号： | LTM4628EV#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 21/36页 |
| 文件大小： | 0K |
| 描述： | IC DC/DC UMODULE 16A 144-LGA |
| 软件下载： | LTM4628 Spice Model |
| 设计资源： | LTM4628 Gerber Files LTM4628EV#PBF Footprint.bxl |
| 特色产品： | μModule Products |
| 标准包装： | 119 |
| 系列： | µModule® |
| 类型： | 非隔离（POL） |
| 输出数： | 2 |
| 电压 - 输入（最小）： | 4.5V |
| 电压 - 输入（最大）： | 26.5V |
| Voltage - Output 1： | 5.5V |
| Voltage - Output 2： | 5.5V |
| 电流 - 输出（最大）： | 8A，8A |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 144-BLGA |
| 尺寸/尺寸： | 0.59" L x 0.59" W x 0.17" H（15.0mm x 15.0mm x 4.3mm） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
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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
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相关代理商/技术参数 |
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| LTM4628IV#PBF | 功能描述:IC DC/DC UMODULE 16A 144-LGA RoHS:是 类别:电源 - 板载 >> DC DC Converters 系列:µModule® 设计资源:VI-200, VI-J00 Design Guide, Appl Manual 标准包装:1 系列:* 类型:隔离 输出数:1 电压 - 输入（最小）:21V 电压 - 输入（最大）:32V Voltage - Output 1:5V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:100W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:9-SlimMod 尺寸/尺寸:4.60" L x 1.80" W x 0.52" H（116.8mm x 45.7mm x 13.2mm） 包装:散装 工作温度:-25°C ~ 85°C 效率:* 电源（瓦特）- 最大:* |
| LTM4628IVPBF | 制造商:LINEAR_DIMENSIONS 制造商全称:LINEAR_DIMENSIONS 功能描述:Dual 8A or Single 16A DC/DC ??Module Regulator |
| LTM4628IY#PBF | 制造商:Linear Technology 功能描述:IC DC/DC UMODULE 16A 144-BGA 制造商:Linear Technology 功能描述:DP-uModule, Dual 8A or Single 16A DC/DC uModule Regulator |
| LTM4630EV#PBF | 制造商:Linear Technology 功能描述:DC/DC CONVERTER DUAL 0.6-1.8 65W 制造商:Linear Technology 功能描述:BUCK UMODULE 15VIN 18A LGA 制造商:Linear Technology 功能描述:DC-DC REGULATOR, BUCK, ADJ, LGA-144, Primary Input Voltage:15V, No. of Outputs:2 制造商:Linear Technology 功能描述:DC-DC REGULATOR, BUCK, ADJ, LGA-144, Primary Input Voltage:15V, No. of Outputs:2, Output Current:36A, No. of Pins:144, Operating Temperature Min:-40C, Operating Temperature Max:125C, MSL:MSL 3 - 168 hours, Package / Case:144-LGA , RoHS Compliant: Yes |
| LTM4630IV#PBF | 制造商:Linear Technology 功能描述:DC/DC CONVERTER DUAL 0.6-1.8 65W 制造商:Linear Technology 功能描述:BUCK UMODULE 15VIN 18A LGA 制造商:Linear Technology 功能描述:DC-DC REGULATOR, BUCK, ADJ, LGA-144, Primary Input Voltage:15V, No. of Outputs:2, Output Current:36A, No. of Pins:144, Operating Temperature Min:-40C, Operating Temperature Max:125C, MSL:MSL 3 - 168 hours, Package / Case:144-LGA , RoHS Compliant: Yes |
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