參數(shù)資料
型號(hào)： LM4040D82ILPR
廠商： Vishay Intertechnology,Inc.
英文描述： PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
中文描述： 精密微功耗并聯(lián)電壓基準(zhǔn)
文件頁(yè)數(shù)： 28/51頁(yè)
文件大?。?/td> 564K
代理商： LM4040D82ILPR
www.ti.com
Cathode and Load Currents
In a typical shunt-regulator configuration (see
Figure 9
), an external resistor, R
S
, 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
) and bias the LM4040 (I
). In all cases, I
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
SLOS456J–JANUARY 2005–REVISED SEPTEMBER 2006
APPLICATION INFORMATION (continued)
Figure 9. Shunt Regulator
28
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4040D82ILPRE3 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 8.192V Prec Micropwr Shunt Vltg 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
LM4040DEM3-2.0 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 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
LM4040DEM3-2.0/NOPB 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 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
LM4040DEM3-2.1 制造商:Maxim Integrated Products 功能描述:- Rail/Tube 制造商:Rochester Electronics LLC 功能描述:
LM4040DEM3-2.1+ 制造商:Maxim Integrated Products 功能描述:V-REF PRECISION 2.048V 15MA 3PIN SOT-23 - Cut Tape Product
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