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參數(shù)資料
| 型號： | EN5335QI |
| 廠商： | ENPIRION INC |
| 元件分類： | 穩(wěn)壓器 |
| 中文描述： | SWITCHING REGULATOR, 5000 kHz SWITCHING FREQ-MAX, QCC44 |
| 封裝： | ROHS COMPLIANT, QFN-44 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 266K |
| 代理商： | EN5335QI |
00846
06/01/2010
Rev: F
EN5335QI
Enpirion 2010 all rights reserved, E&OE
www.enpirion.com
11
Design Considerations for Lead-Frame Based Modules
Exposed Metal on Bottom of Package
Lead frame offers many advantages in thermal performance, in reduced electrical lead resistance,
and in overall foot print. However, they do require some special considerations.
In the assembly process lead frame construction requires that, for mechanical support, some of the
lead-frame cantilevers be exposed at the point where wire-bond or internal passives are attached.
This results in several small pads being exposed on the bottom of the package.
Only the large thermal pad and the perimeter pads are to be mechanically or electrically connected to
the PC board. The PCB top layer under the EN5335QI should be clear of any metal except for the
large thermal pad. The “grayed-out” area in Figure 4 represents the area that should be clear of any
metal (traces, vias, or planes), on the top layer of the PCB. Figure 5 shows the recommended PCB
footprint for this device.
Figure 4. Lead-Frame exposed metal. Grey area highlights exposed metal that is not to be mechanically or
electrically connected to the PCB.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| EN5335QI-E | 功能描述:電源管理IC開發(fā)工具 3AMP MOD INT IND VID EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| EN5336QI | 功能描述:開關變換器、穩(wěn)壓器與控制器 3AMP BUCK CONVERTER RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| EN5336QI-E | 功能描述:電源管理IC開發(fā)工具 3AMP MOD INT INDUC EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| EN5337QI | 功能描述:直流/直流開關轉換器 3AMP BUCK CONVERTER DC-DC Conv, Int Ind RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| EN5337QI-E | 功能描述:電源管理IC開發(fā)工具 Eval Board EN5337QI 3A Sync. Buck Convtr RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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