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參數(shù)資料
| 型號： | LM4041BIM3-1.2 |
| 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, 1.225 V, PDSO3 |
| 封裝： | PLASTIC, TO-236AB, SOT-23, 3 PIN |
| 文件頁數(shù)： | 15/24頁 |
| 文件大?。?/td> | 509K |
| 代理商： | LM4041BIM3-1.2 |
www.ti.com
APPLICATION INFORMATION
Adjustable Version
The adjustable version allows V
Z
to be set by a user-defined resistor divider. The output voltage, V
Z
, is set
according to the equation shown in
Figure 14
.
R
S
LM4041
(Adjustable)
V
S
R1
R2
V
Z
= V
REF
1
R2
R1
+
V
REF
Cathode and Load Currents
In a typical shunt regulator configuration (see
Figure 15
), an external resistor, R
, is connected between the
supply and the cathode of the LM4041. R
S
must be set properly, as it sets the total current available to supply
the load (I
L
) and bias the LM4041 (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 recommended rating of 12 mA.
R
S
is calculated as shown in
Equation 1
.
R
S
V
S
(I
L
V
Z
I
Z
)
(1)
LM4041
I
Z
+ I
L
I
L
I
Z
V
S
V
Z
R
S
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146C–FEBRUARY 2005–REVISED MAY 2005
Figure 14. Adjustable Shunt Regulator
Figure 15. Shunt Regulator
15
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| LM4041BIM3-2.5 | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| LM4041BIM3X-1.2 | 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 |
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| LM4041BIM7-1.2 | 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 |
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