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TL1431C Scheda tecnica(PDF) 3 Page - STMicroelectronics

Il numero della parte TL1431C
Spiegazioni elettronici  PROGRAMMABLE VOLTAGE REFERENCE
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TL1431C Scheda tecnica(HTML) 3 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS
Tamb =25
oC (unless otherwise specified)
Symbol
Parameter
TL1431I
TL1431AI
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
Vref
Reference Input Voltage - (figure 1)
VKA =Vref,IK = 10mA
Tamb =25
oC
2.490
2.500
2.510
2.493
2.500
2.507
V
∆Vref
Reference Input Voltage Deviation Over
Temperature Range - (figure 1, note1)
VKA =Vref, IK= 10mA, Tmin.
≤ Tamb ≤ Tmax.
730
7
30
mV
∆Vref
∆T
Temperature Coefficient of Reference Input
Voltage - (note 2)
VKA =Vref,IK = 10mA, Tmin.
≤ Tamb ≤ Tmax.
±22
±100
±22
±100
ppm/
oC
∆Vref
∆VKA
Ratio of Change in Reference Input Voltage to
Change in Cathode to Anode Voltage - (figure 2)
IK = 10mA,
∆VKA = 36 to 3V
-1.1
-2
-1.1
-2
mV/V
Iref
Reference Input Current - (figure 2)
IK = 10mA, R1 = 10k
Ω,R2 = ∞
Tamb =25
oC
Tmin.
≤ Tamb ≤ Tmax.
1.5
2.5
3
1.5
2.5
3
µA
∆Iref
Reference Input Current Deviation Over
Temperature Range - (figure 2)
IK = 10mA, R1 = 10k
Ω,R2 = ∞
Tmin.
≤ Tamb ≤ Tmax.
0.5
1
0.8
1.2
µA
Imin
Minimum Cathode Current for Regulation
(figure 1)
VKA =Vref
0.5
1
0.5
0.7
mA
Ioff
Off-State Cathode Current - (figure 3)
180
500
180
500
nA
|ZKA|
Dynamic Impedance - (figure 1, note 3)
VKA =Vref,
∆IK = 1 to 100mA, f ≤ 1kHz
0.2
0.5
0.2
0.5
T1
T2
Tempera ture
Vre fmax.
Vref min.
Notes : 1.
∆Vref is defined as the difference between the maximum and minimum values obtained over the full temperature
range.
∆Vref =Vref max. -Vref min
2.
The temperature coefficient is defined as the slopes (positive and negative) of the voltage vs temperature limits whithin
which the reference voltage is guaranteed.
3.
The dynamic Impedance is defined as |ZKA|
=
∆VKA
∆IK
25 C
Te m pe ra ture
ma x
2.5V
min
-n
p pm
/
C
+ n
ppm
/ C
TL1431
3/8


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