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TL431BQLP 数据表(PDF) 20 Page - Texas Instruments

部件名 TL431BQLP
功能描述  TL431, TL432 Precision Programmable Reference
PDF  85 Pages
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制造商  TI2 [Texas Instruments]
网页  https://www.ti.com
标志 TI2 - Texas Instruments

TL431BQLP 数据表(HTML) 20 Page - Texas Instruments

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7.2 Dynamic Impedance
The dynamic impedance is defined as
KA
KA
KA
V
Z
I
'
'
. When the device is operating with two external resistors
(see Figure 6-13), the total dynamic impedance of the circuit is given by
V
z'
I
'
' , which is approximately equal
to
KA
R1
Z
1
R2
§
·
¨
¸
©
¹ .
The VKA of the device can be affected by the dynamic impedance. The device test current Itest for VKA is
specified in the Electrical Characteristics. Any deviation from Itest can cause deviation on the output VKA. Figure
7-4 shows the effect of the dynamic impedance on the VKA.
Ps
0
VKA (V)
Itest
IKA(min)
IKA
Figure 7-4. Dynamic Impedance
TL431, TL432
SLVS543S – AUGUST 2004 – REVISED MAY 2024
www.ti.com
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Product Folder Links: TL431 TL432



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