- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98000 > LM2664MDC (NATIONAL SEMICONDUCTOR CORP) SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, UUC PDF資料下載
參數(shù)資料
| 型號(hào)： | LM2664MDC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, UUC |
| 封裝： | DIE |
| 文件頁(yè)數(shù)： | 10/12頁(yè) |
| 文件大小： | 340K |
| 代理商： | LM2664MDC |
Other Applications (Continued)
Cascading Devices
Cascading the LM2664s is an easy way to produce a greater
negative voltage (e.g. A two-stage cascade circuit is shown
in Figure 4).
If n is the integer representing the number of devices cas-
caded, the unloaded output voltage V
out is (-nVin). The effec-
tive output resistance is equal to the weighted sum of each
individual device:
R
out = nRout_1 + n/2 Rout_2 +...+Rout_n
Note that, the number of n is practically limited since the in-
creasing of n significantly reduces the efficiency, and in-
creases the output resistance and output voltage ripple.
Combined Doubler and Inverter
In Figure 5, the LM2664 is used to provide a positive voltage
doubler and a negative voltage converter. Note that the total
current drawn from the two outputs should not exceed 50
mA.
DS100031-10
FIGURE 3. Lowering Output Resistance by Paralleling Devices
DS100031-11
FIGURE 4. Increasing Output Voltage by Cascading Devices
LM2664
www.national.com
7
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2704MFX-ADJ/NOPB | 0.62 A SWITCHING REGULATOR, PDSO5 |
| LM2710MTX-ADJ/NOPB | 1.4 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO20 |
| LM2710MT-ADJ/NOPB | 1.4 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO20 |
| LM2984MDC | 1-CHANNEL POWER SUPPLY SUPPORT CKT, UUC |
| LM3207TL/NOPB | 1.2 A SWITCHING REGULATOR, 2300 kHz SWITCHING FREQ-MAX, PBGA9 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2665 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LM2665M6 | 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 |
| LM2665M6/NOPB | 功能描述:電荷泵 SWITCHED CAPACITOR VLTG CONVERTER 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 |
| LM2665M6/NOPB | 制造商:Texas Instruments 功能描述:DC/DC Charge Pump Converter (DC-DC) IC |
| LM2665M6X | 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。