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參數(shù)資料
| 型號： | LM2665M6X |
| 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)： | 5/8頁 |
| 文件大?。?/td> | 210K |
| 代理商： | LM2665M6X |
Connection Diagram
Ordering Information
Order Number
Package
Number
MA06A
MA06A
Package
Marking
SO4A (Note 9)
SO4A (Note 9)
Supplied as
LM2665M6
LM2665M6X
Tape and Reel (1000 units/rail)
Tape and Reel (3000 units/rail)
Note 9:
The first letter
″
S
″
identifies the part as a switched capacitor converter. The next two numbers are the device number. The fourth letter
″
A
″
indicates the
grade. Only one grade is available. Larger quantity reels are available upon request.
Pin Description
Pin
Name
Function
Voltage Doubler
Voltage Split
1
2
3
V+
GND
CAP
Power supply positive voltage input.
Power supply ground input
Connect this pin to the negative terminal of the
charge-pump capacitor
Shutdown control pin, tie this pin to ground in normal
operation.
Positive voltage output.
Positive voltage output.
Same as doubler
Same as doubler.
4
SD
Same as doubler.
5
OUT
Power supply positive voltage
input
Same as doubler
6
CAP+
Connect this pin to the positive terminal of the
charge-pump capacitor.
Circuit Description
The LM2665 contains four large CMOS switches which are
switched in a sequence to double the input supply voltage.
Energy transfer and storage are provided by external capaci-
tors. Figure 2 illustrates the voltage conversion scheme.
When S
and S
are closed, C
charges to the supply volt-
age V+. During this time interval, switches S
and S
are
open. In the next time interval, S
and S
are open; at the
same time, S
and S
are closed, the sum of the input volt-
age V+ and the voltage across C
gives the 2V+ output volt-
age when there is no load. The output voltage drop when a
load is added is determined by the parasitic resistance (R
d-
s(on)
of the MOSFET switches and the ESR of the capacitors)
and the charge transfer loss between capacitors. Details will
be discussed in the following application information section.
Application Information
Positive Voltage Doubler
The main application of the LM2665 is to double the input
voltage. The range of the input supply voltage is 2.5V to
5.5V.
The output characteristics of this circuit can be approximated
by an ideal voltage source in series with a resistance. The
6-Lead SOT (M6)
DS100049-13
Top View With Package Marking
DS100049-22
Actual Size
DS100049-14
FIGURE 2. Voltage Doubling Principle
L
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 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 |
| LM2670 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync |
| LM2670_05 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER㈢ High Efficiency 3A Step-Down Voltage Regulator with Sync |
| LM2670EP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LM2670EP Enhanced Plastic SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync |
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