參數資料
型號： LM4040AIM3-8.2
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 基準電壓源/電流源
英文描述： TRANS PREBIASED PNP 150MW SOT523
中文描述： 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 8.192 V, PDSO3
封裝： PLASTIC, TO-236AB, SOT-23, 3 PIN
文件頁數： 26/39頁
文件大?。?/td> 482K
代理商： LM4040AIM3-8.2
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PDF資料
PDF描述
LM4040BIM3-8.2 Precision Micropower Shunt Voltage Reference
LM4040CIM3-8.2 TRANS PREBIASED PNP 200MW SOT323
LM4040DIM3-8.2 TRANS PREBIASED PNP 200MW SOT23
LM4040BIM7-2.5 Direct mounting on the PCB, Crimping connection, Discrete wire connectors; HRS No: 544-0086-1 00; No. of Positions: 20; 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
LM4040CIM7-2.5 Direct mounting on the PCB, Crimping connection, Discrete wire connectors; HRS No: 544-0087-4 00; No. of Positions: 22; 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
相關代理商/技術參數
參數描述
LM4040AIM3X10 制造商:NATIONAL 功能描述:*
LM4040AIM3X-10 功能描述:基準電壓& 基準電流 RoHS:否 制造商:STMicroelectronics 產品:Voltage References 拓撲結構:Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數（典型值）:100 PPM / C 串聯 VREF - 輸入電壓（最大值）: 串聯 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
LM4040AIM3X-10.0 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Micropower Shunt Voltage Reference
LM4040AIM3X-10/NOPB 功能描述:基準電壓& 基準電流 RoHS:否 制造商:STMicroelectronics 產品:Voltage References 拓撲結構:Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數（典型值）:100 PPM / C 串聯 VREF - 輸入電壓（最大值）: 串聯 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
LM4040AIM3X-2.0 功能描述:IC VREF SHUNT PREC 2.048V SOT23 RoHS:否 類別:集成電路 (IC) >> PMIC - 電壓基準 系列:- 標準包裝:2,000 系列:- 基準類型:旁路，可調節(jié)，精度 輸出電壓:1.24 V ~ 16 V 容差:±0.5% 溫度系數:- 輸入電壓:1.24 V ~ 16 V 通道數:1 電流 - 陰極:100µA 電流 - 靜態(tài):- 電流 - 輸出:20mA 工作溫度:-40°C ~ 85°C 安裝類型:通孔 封裝/外殼:TO-226-3、TO-92-3（TO-226AA）成形引線 供應商設備封裝:TO-92-3 包裝:帶卷 (TR)
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