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TL1431IYD Datenblatt(PDF) 4 Page - STMicroelectronics

Teilenummer TL1431IYD
Bauteilbeschribung  Programmable Voltage Reference
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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Electrical Characteristics
TL1431
4/13
3
Electrical Characteristics
Table 3.
Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
TL1431C
TL1431AC
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
Vref
Reference Input Voltage - figure 1
VKA = Vref , Ik = 10 mA
2.490 2.500 2.510 2.493 2.500 2.507
V
∆V
ref
Reference Input Voltage Deviation Over
Temperature Range (1) - figure 1
VKA = Vref, Ik = 10 mA, Tmin ≤Tamb ≤ Tmax
1.
V
ref is defined as the difference between the maximum and minimum values obtained over the full temperature range.
∆V
ref = Vref max. - Vref min.
320
3
20
mV
Temperature Coefficient of Reference Input
Voltage (2)
VKA = Vref, Ik = 10 mA, Tmin ≤Tamb ≤ Tmax
2.
The temperature coefficient is defined as the slopes (positive and negative) of the voltage vs temperature limits within
which the reference is guaranteed.
±13
±90
±13
±90
ppm/°C
Ratio of Change in Reference Input Voltage to
Change in Cathode to Anode Voltage - figure 2
Ik = 10mA -
∆V
KA = 36V to 3V
-2
-1.1
-2
-1.1
mV/V
Iref
Reference Input Current
Ik = 10mA, R1 = 10k
Ω, R2 = ∞
Tmin ≤Tamb ≤Tmax
1.5
2.5
3
1.5
2.5
3
µA
∆I
ref
Reference Input Current Deviation Over
Temperature Range
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 (3)
VKA = Vref , ∆ Ik = 1 to100mA, f ≤1kHZ
3.
The dynamic Impedance is definied as
|ZKA| =
0.20.5
0.20.5
T1
T2
Temperature
V ref max.
V ref min.
∆Vref
∆T
----------------
Temperature
25°C
Max
2.5V
min
-n
ppm/°C
+n
ppm
/°C
∆Vref
∆Vka
----------------
∆VKA
∆IK
-----------------


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