參數(shù)資料
型號(hào)： LM4040BIM7X-3.0
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 基準(zhǔn)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, 3 V, PDSO5
封裝： SC-70, 5 PIN
文件頁數(shù)： 26/39頁
文件大?。?/td> 482K
代理商： LM4040BIM7X-3.0
www.ti.com
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
相關(guān)PDF資料
PDF描述
LM4040CIM7X-3.0 Precision Micropower Shunt Voltage Reference
LM4040BIM7X-4.1 Precision Micropower Shunt Voltage Reference
LM4040EIM7X-3.0 Precision Micropower Shunt Voltage Reference
LM4040DIM7X-3.0 .068uF 400WV +10% *NO Pb*
LM4040EIM7-2.0 Direct mounting on the PCB, Crimping connection, Discrete wire connectors; HRS No: 544-0062-3 00; No. of Positions: 14; Connector Type: Wire; Contact Gender: Male; Contact Spacing (mm): 2; Terminal Pitch (mm): 2; Termination Style: IDC; Current Rating(Amps)(Max.): 1; Contact Mating Area Plating: Tin; Operating Temperature Range (degrees C): -30 to 85; General Description: Housing; Straight; Direct PCB mounting; For AWG#26
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4040BIM7X-4.1 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Micropower Shunt Voltage Reference
LM4040BIM7X-5.0 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Micropower Shunt Voltage Reference
LM4040BIM-8.2 制造商:Rochester Electronics LLC 功能描述:- Bulk
LM4040BIMX-4.1 制造商:Texas Instruments 功能描述:1-OUTPUT TWO TERM VOLTAGE REFERENCE, 4.096 V, PDSO8
LM4040BIX3-2.1 制造商:Maxim Integrated Products 功能描述:- Rail/Tube 制造商:Rochester Electronics LLC 功能描述:
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