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參數(shù)資料
| 型號： | LM2660MMX/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 40 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | MINI, SO-8 |
| 文件頁數(shù)： | 2/13頁 |
| 文件大?。?/td> | 358K |
| 代理商： | LM2660MMX/NOPB |
Other Applications (Continued)
REGULATING V
out
It is possible to regulate the output of the LM2660/LM2661
by use of a low dropout regulator (such as LP2951). The
whole converter is depicted in Figure 8. This converter can
give a regulated output from 1.5V to 5.5V by choosing the
proper resistor ratio:
where, V
ref = 1.235V
The error flag on pin 5 of the LP2951 goes low when the
regulated output at pin 4 drops by about 5%. The LP2951
can be shutdown by taking pin 3 high.
Also, as shown in Figure 9 by operating LM2660/LM2661 in
voltage doubling mode and adding a linear regulator (such
as LP2981) at the output, we can get +5V output from an
input as low as +3V.
01291125
FIGURE 7. Generating +3V
in from +Vin
01291127
FIGURE 8. Combining LM2660/LM2661 with LP2951 to Make a Negative Adjustable Regulator
LM2660/LM2661
www.national.com
10
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2660MX | 功能描述:電荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| LM2660MX/NOPB | 功能描述:電荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| LM2661 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Switched Capacitor Voltage Converter |
| LM2661/3/4EVAL | 功能描述:電源管理IC開發(fā)工具 LM2661/3/4 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 |
| LM2661/3/4EVAL/NOPB | 功能描述:電源管理IC開發(fā)工具 LM2661/3/4 EVAL BRD 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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