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TL431ACLT1 Datasheet(PDF) 4 Page - First Components International

Part # TL431ACLT1
Description  Programmable Precision Reference Sink Current Capability of 1.0 to 100mA
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Manufacturer  FCI [First Components International]
Direct Link  http://www.cotra.com.tw/
Logo FCI - First Components International

TL431ACLT1 Datasheet(HTML) 4 Page - First Components International

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4
2001-05-A
TL431 Programmable Precision Reference
--
1.8
4.0
Reference Input Current (Figure 2)
IK=10mA, R1=10k, R2=∞
TA=+25℃
TA=Tlow to Thigh (Note 1)
Iref
--
--
5.2
µA
Reference Input Current Deviation Over
Temperature Range (Figure 2, Note 1)
IK=10mA, R1=10k, R2=∞
ΔIref
--
0.4
1.2
µA
Minimum Cathode Current for Regulation
VKA=Vref (Figure 1)
Imin
--
0.5
1.0
mA
Off-State Cathode Current (Figure 3)
VKA=36V, Vref =0V
Ioff
--
260
1000
nA
Dynamic Impedance (Figure 1, Note 3)
VKA=Vref, ΔIK=1.0mA to 100mA, f< 1.0kHz
|ZKA|
--
0.22
0.5
Ω
1
Tlow=0℃,
Thigh=+70℃
2
The deviation parameter ΔVref is defined as the differences between the maximum and
minimum values obtained over the full operating ambient temperature range the applies.
The average temperature coefficient of the reference input voltage, αVref, is defined as:
αVref
C
°
ppm
=
A
ref
ref
T
C
V
V
×
°
6
10
25
@
=
)
25
@
(
10
6
C
V
T
V
ref
A
ref
°
×
αVref can be positive or negative depending on whether Vref Min of Vref Max occurs at the
lower ambient temperature. (Refer to Figure 6)
Example: ΔVref =8.0mV and slope is positive, Vref @25℃=2.495V, ΔTA=70℃
αVref =
)
495
.
2
(
70
10
008
.
0
6
×
=45.8 ppm/℃


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