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參數(shù)資料
| 型號： | LM2665M6 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Switched Capacitor Voltage Converter |
| 中文描述： | SWITCHED CAPACITOR CONVERTER, 160 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | SOT-23, 6 PIN |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 210K |
| 代理商： | LM2665M6 |
Other Applications
(Continued)
Cascading Devices
Cascading the LM2665s is an easy way to produce a greater
voltage (A two-stage cascade circuit is shown in Figure 4).
The effective output resistance is equal to the weighted sum
of each individual device:
R
out
= 1.5R
out_1
+ R
out_2
Note that, the increasing of the number of cascading stages
is pracitically limited since it significantly reduces the effi-
ciency, increases the output resistance and output voltage
ripple.
Regulating V
OUT
It is possible to regulate the output of the LM2665 by use of
a low dropout regulator (such as LP2980-5.0). The whole
converter is depicted in Figure 5.
A different output voltage is possible by use of LP2980-3.3,
LP2980-3.0, or LP2980-adj.
Note that, the following conditions must be satisfied simulta-
neously for worst case design:
2V
in_min
>
V
out_min
+V
drop_max
(LP2980) + I
out_max
x R
out_max
(LM2665)
2V
in_max
<
V
out_max
+V
drop_min
(LP2980) + I
out_min
x R
out_min
(LM2665)
DS100049-19
FIGURE 3. Lowering Output Resistance by Paralleling Devices
DS100049-20
FIGURE 4. Increasing Output Voltage by Cascading Devices
DS100049-21
FIGURE 5. Generate a Regulated +5V from +3V Input Voltage
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| LM2665M6X/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 |
| LM266XW | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
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