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參數(shù)資料
| 型號(hào)： | LM3207TL/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.2 A SWITCHING REGULATOR, 2300 kHz SWITCHING FREQ-MAX, PBGA9 |
| 封裝： | ROHS COMPLIANT, MICRO SMD, 9 PIN |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 1601K |
| 代理商： | LM3207TL/NOPB |
plastic encapsulation characteristic of larger devices, it is vul-
nerable to light. Backside metalization and/or epoxy coating,
along with front-side shading by the printed circuit board, re-
duce this sensitivity. However, the package has exposed die
edges. Micro SMD devices are sensitive to light, in the red
and infrared range, shining on the package’s exposed die
edges.
BOARD LAYOUT CONSIDERATIONS
20165354
FIGURE 4. Current Loop
Referring to Figure 4, the LM3207 has two major current loops
where pulse and ripple current flow. The loop shown in the
left hand side is most important, because pulse current shown
in Figure 4 flows in this path. The right hand side is next. The
current waveform in this path is triangular, as shown in Figure
4. Pulse current has many high-frequency components due
to fast di/dt. Triangular ripple current also has wide high-fre-
quency components. Board layout and circuit pattern design
of these two loops are the key factors for reducing noise ra-
diation and stable operation. Other lines, such as from battery
to C1(+) and C2(+) to load, are almost DC current, so it is not
necessary to take so much care. Only pattern width (current
capability) and DCR drop considerations are needed.
www.national.com
20
LM3207
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| LM336BZ-5.0/NOPB | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, PBCY3 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3207TLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers with Integrated Vref LDO |
| LM3207TLX/NOPB | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM3207TLX-2.53 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers with Integrated Vref LDO |
| LM3207TLX-2.53/NOPB | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM3208 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers |
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