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參數(shù)資料
| 型號(hào)： | LM2661 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Switched Capacitor Voltage Converter |
| 中文描述： | 開關(guān)電容電壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 296K |
| 代理商： | LM2661 |
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 con-
verter 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 shut-
down 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.
DS012911-27
FIGURE 8. Combining LM2660/LM2661 with LP2951 to Make a Negative Adjustable Regulator
DS012911-28
FIGURE 9. Generating +5V from +3V Input Voltage
L
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 |
|---|---|
| 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(píng)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(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM2661A E WAF | 制造商:Texas Instruments 功能描述: |
| LM2661AM E WAF | 制造商:Texas Instruments 功能描述: |
| LM2661M | 制造商:Texas Instruments 功能描述:Charge Pump INV/STPUP -1.5V to -5.5V 120mA 8-Pin SOIC N Rail |
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