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TL431C датащи(PDF) 6 Page - HTC Korea TAEJIN Technology Co.

номер детали TL431C
подробное описание детали  PROGRAMMABLE PRECISION SHUNT REGULATOR
PDF  12 Pages
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производитель  HTC [HTC Korea TAEJIN Technology Co.]
домашняя страница  http://www.htckorea.co.kr
Logo HTC - HTC Korea TAEJIN Technology Co.

TL431C датащи(HTML) 6 Page - HTC Korea TAEJIN Technology Co.

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PROGRAMMABLE PRECISION SHUNT REGULATOR
TL431/A/C
Dec. 2010 – Rev.1.5
- 6 -
HTC
The deviation parameters ΔVREF/ΔT and ΔIREF/ΔT are defined as the differences between the maximum and
minimum values obtained over the recommended temperature range. The average full-range temperature
coefficient of the reference voltage, αVREF, is defined as :
A
6
REF
I(dev)
REF
ΔT
10
×
)
25
at
V
V
(
=
)
(ppm/
αV
℃
℃
Where :
ΔTA is the recommended operating free-air temperature range of the device.
αVREF can be positive or negative, depending on whether minimum VREF or maximum VREF, respectively, occurs at
the lower temperature.
Example : Maximum VREF=2496mV at 30 , maximum V
℃
REF=2492mV at 0
, V
℃
REF=2495mV at 25
,
℃
ΔTA=70
for TL431C.
℃
℃
≈
℃
23ppm/
70
10
×
)
2495mV
4mV
(
=
αV
6
REF
Because minimum VREF occurs at the lower temperature, the coefficient is positive.
Calculating Dynamic Impedance
The dynamic impedance is defined as :
KA
KA
KA
ΔI
ΔV
=
Z
When the device is operating with two external resistors, the total dynamic impedance of the circuit is given by:
()
R1/R2
+
1
Z
≈
ΔI
ΔV
=
Z
KA
'



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