參數(shù)資料
型號： LM4040EIM7X-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
文件大小： 482K
代理商： LM4040EIM7X-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
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
LM4040DIM7-2.0 Direct mounting on the PCB, Crimping connection, Discrete wire connectors; HRS No: 544-0015-3 00; No. of Positions: 14; Connector Type: Wire; Contact Gender: Male; Contact Spacing (mm): 2; Terminal Pitch (mm): 2; Current Rating(Amps)(Max.): 3; Operating Temperature Range (degrees C): -30 to 85; General Description: Plug; Crimping; Direct PCB mounting; Single row
LM4040CIM7-2.0 Direct mounting on the PCB, Crimping connection, Discrete wire connectors; HRS No: 544-0083-3 00; No. of Positions: 14; Connector Type: Wire; Contact Gender: Male; Contact Spacing (mm): 2; Terminal Pitch (mm): 2; Current Rating(Amps)(Max.): 3; Operating Temperature Range (degrees C): -30 to 85; General Description: Plug; Crimping; Direct PCB mounting; Double row
LM4040BIM7-2.0 Direct mounting on the PCB, Crimping connection, Discrete wire connectors; HRS No: 544-0047-0 00; No. of Positions: 13; 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; Right angle; Direct PCB mounting; For AWG#28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4040EIMX-2.5 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:
LM4040EIZ-2.0/NOPB 功能描述:IC VREF SHUNT PREC 2.048V TO92-3 RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 基準(zhǔn)類型:旁路，精度 輸出電壓:5V 容差:±0.5% 溫度系數(shù):100ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:80µA 電流 - 靜態(tài):- 電流 - 輸出:15mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:TO-236-3，SC-59，SOT-23-3 供應(yīng)商設(shè)備封裝:SOT-23-3 包裝:帶卷 (TR) 其它名稱:LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND
LM4040EIZ-2.5 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:
LM4040EIZ-2.5/NOPB 功能描述:IC VREF SHUNT PREC 2.5V TO-92-3 RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 基準(zhǔn)類型:串聯(lián)，精度 輸出電壓:4.5V 容差:±800µV 溫度系數(shù):1ppm/°C 輸入電壓:13.5 V ~ 22 V 通道數(shù):1 電流 - 陰極:- 電流 - 靜態(tài):7mA 電流 - 輸出:10mA 工作溫度:-55°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:20-LCC 供應(yīng)商設(shè)備封裝:20-CLCC 包裝:管件
LM4040EIZ-3.0/NOPB 功能描述:IC VREF SHUNT PREC 3V TO-92-3 RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 基準(zhǔn)類型:旁路，精度 輸出電壓:5V 容差:±0.5% 溫度系數(shù):100ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:80µA 電流 - 靜態(tài):- 電流 - 輸出:15mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:TO-236-3，SC-59，SOT-23-3 供應(yīng)商設(shè)備封裝:SOT-23-3 包裝:帶卷 (TR) 其它名稱:LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND
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