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參數(shù)資料
| 型號： | LM4040AIM3X-8.2 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Precision Micropower Shunt Voltage Reference |
| 中文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 8.192 V, PDSO3 |
| 封裝： | PLASTIC, TO-236AB, SOT-23, 3 PIN |
| 文件頁數(shù)： | 26/39頁 |
| 文件大?。?/td> | 482K |
| 代理商： | LM4040AIM3X-8.2 |
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Cathode and Load Currents
In a typical shunt-regulator configuration (see
Figure 9
), an external resistor, R
, is connected between the
supply and the cathode of the LM4040. R
S
must be set properly, as it sets the total current available to supply
the load (I
L
) and bias the LM4040 (I
Z
). In all cases, I
Z
must stay within a specified range for proper operation of
the reference. Taking into consideration one extreme in the variation of the load and supply voltage (maximum I
L
and minimum V
S
), R
S
must be small enough to supply the minimum I
Z
required for operation of the regulator, as
given by data-sheet parameters. At the other extreme, maximum V
S
and minimum I
L
, R
S
must be large enough
to limit I
Z
to less than its maximum-rated value of 15 mA.
R
S
is calculated according to
Equation 1
:
R
S
V
S
(I
L
V
Z
I
Z
)
(1)
LM4040
I
Z
+ I
L
I
L
I
Z
V
S
V
Z
R
S
LM4040
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLOS456I–JANUARY 2005–REVISED DECEMBER 2005
APPLICATION INFORMATION (continued)
Figure 9. Shunt Regulator
26
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4040AIM-4.1 | 制造商:Texas Instruments 功能描述:Voltage Reference, Fixed, 4.096V, 8 Pin, Plastic, SOP |
| LM4040AIM-5.0 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Reference |
| LM4040AIM-8.2 | 制造商:Texas Instruments 功能描述: |
| LM4040AIMX-10.0 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM4040AIMX-4.1 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
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