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參數(shù)資料
| 型號(hào)： | LM4041A12ILPR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | CAPACITOR 2700UF 63V ELECT TSHA |
| 中文描述： | 精密微功耗并聯(lián)電壓基準(zhǔn) |
| 文件頁數(shù)： | 15/24頁 |
| 文件大小： | 509K |
| 代理商： | LM4041A12ILPR |
www.ti.com
APPLICATION INFORMATION
Adjustable Version
The adjustable version allows V
Z
to be set by a user-defined resistor divider. The output voltage, V
Z
, is set
according to the equation shown in
Figure 14
.
R
S
LM4041
(Adjustable)
V
S
R1
R2
V
Z
= V
REF
1
R2
R1
+
V
REF
Cathode and Load Currents
In a typical shunt regulator configuration (see
Figure 15
), an external resistor, R
, is connected between the
supply and the cathode of the LM4041. R
S
must be set properly, as it sets the total current available to supply
the load (I
L
) and bias the LM4041 (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 recommended rating of 12 mA.
R
S
is calculated as shown in
Equation 1
.
R
S
V
S
(I
L
V
Z
I
Z
)
(1)
LM4041
I
Z
+ I
L
I
L
I
Z
V
S
V
Z
R
S
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146C–FEBRUARY 2005–REVISED MAY 2005
Figure 14. Adjustable Shunt Regulator
Figure 15. Shunt Regulator
15
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4041AECT-1.2 | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 Precision MicroPWR 1.225V Shunt REF RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| LM4041AECT-1.2-CUT TAPE | 制造商:ST 功能描述:LM4041 Series 1.225 V ?.1 % Micropower Shunt Voltage Reference - SOT-323-5L |
| LM4041AELT-1.2 | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 Precision MicroPWR 1.225V Shunt REF RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| LM4041AELT-1.2-CUT TAPE | 制造商:ST 功能描述:LM4041 Series 1.225 V ?.1 % Micropower Shunt Voltage Reference - SOT-23-3L |
| LM4041AEM3-1.2 | 制造商:Maxim Integrated Products 功能描述:IMPROVED PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE - Rail/Tube |
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