參數(shù)資料
型號： LM4040D82ILPR
廠商： TEXAS INSTRUMENTS INC
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 8.192 V, PBCY3
封裝： ROHS COMPLIANT, PLASTIC, TO-226, TO-92, 3 PIN
文件頁數(shù)： 21/56頁
文件大?。?/td> 773K
代理商： LM4040D82ILPR
Cathode and Load Currents
R
S
+
V
S
* VZ
(I
L
) IZ)
(1)
LM4040
IZ + IL
IL
IZ
VS
VZ
RS
LM4040
SLOS456K – JANUARY 2005 – REVISED MARCH 2008 .................................................................................................................................................. www.ti.com
In a typical shunt-regulator configuration (see Figure 9), an external resistor, RS, is connected between the
supply and the cathode of the LM4040. RS must be set properly, as it sets the total current available to supply
the load (IL) and bias the LM4040 (IZ). In all cases, IZ 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 IL
and minimum VS), RS must be small enough to supply the minimum IZ required for operation of the regulator, as
given by data-sheet parameters. At the other extreme, maximum VS and minimum IL, RS must be large enough
to limit IZ to less than its maximum-rated value of 15 mA.
RS is calculated according to Equation 1:
Figure 9. Shunt Regulator
28
Copyright 2005–2008, Texas Instruments Incorporated
相關(guān)PDF資料
PDF描述
LM4040D82IDCKRG4 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 8.192 V, PDSO5
LM4040B41IDCKRG4 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 4.096 V, PDSO5
LM4040D82ILPE3 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 8.192 V, PBCY3
LM4040B30ILP 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 3 V, PBCY3
LM4040B25IDBZTG4 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO3
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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