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TL1431AI Datasheet(PDF) 2 Page - STMicroelectronics

No. de pieza TL1431AI
Descripción Electrónicos  PROGRAMMABLE VOLTAGE REFERENCE
Download  8 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TL1431AI Datasheet(HTML) 2 Page - STMicroelectronics

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ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VKA
Cathode to Anode Voltage
37
V
IK
Continuous Cathode Current Range
-100 to +150
mA
Iref
Reference Input Current Range
-0.05 to +10
mA
Toper
Operating Free-air Temperature Range
TL1431C/AC
TL1431I/AI
-20 to +70
-40 to +105
oC
Tstg
Storage Temperature Range
-65 to +150
oC
OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
VKA
Cathode to Anode Voltage
Vref to 36
V
IK
Cathode Current
1 to 100
mA
ELECTRICAL CHARACTERISTICS
Tamb =25
oC (unless otherwise specified)
Symbol
Parameter
TL1431C
TL1431AC
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.
320
3
20
mV
∆V
ref
∆T
Temperature Coefficient of Reference Input
Voltage - (note 2)
VKA =Vref,IK = 10mA, Tmin.
≤ Tamb ≤ Tmax.
±13
±90
±13
±90
ppm/
oC
∆Vref
∆VKA
Ratio of Change in Reference Input Voltage to
Change in Cathode to Anode Voltage - (figure 2)
IK = 10mA,
∆VKA = 36V to 3V
-2
-1.1
-2
-1.1
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.
0.2
1.2
0.2
1.2
µA
Imin
Minimum Cathode Current for Regulation - (figure
1)
VKA =Vref
0.5
1
0.5
0.6
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
Tempe ra tur e
V ref ma x.
Vre fmin.
Notes : 1.
∆Vref is defined as the difference between the maximum and minimum values obtained over the full temperature
range.
∆Vref =Vrefmax. -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|
=
∆V
KA
∆I
K
25 C
Te m pe ra ture
ma x
2.5V
min
-n
p
pm/
C
+ n
ppm
/ C
TL1431
2/8


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