參數(shù)資料
型號(hào)： LM4040
廠商： Texas Instruments, Inc.
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： 改進(jìn)的、精密微功耗并聯(lián)型電壓基準(zhǔn)，帶有多種反向擊穿電壓
文件頁(yè)數(shù)： 26/39頁(yè)
文件大?。?/td> 482K
代理商： LM4040
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
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4040/1 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Precision Micropower Shunt Voltage Reference
LM4040_05 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Micropower Shunt Voltage Reference
LM4040_07 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
LM4040_08 制造商:ZETEX 制造商全稱:ZETEX 功能描述:Precision micropower shunt voltage references
LM4040_10 制造商:TI 制造商全稱:Texas Instruments 功能描述:PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
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