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431AIY View Datasheet(PDF) - STMicroelectronics

Part Name
Description
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431AIY
ST-Microelectronics
STMicroelectronics ST-Microelectronics
431AIY Datasheet PDF : 15 Pages
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Electrical characteristics
3
Electrical characteristics
TL431
Table 3.
Symbol
Tamb = 25°C (unless otherwise specified)
Parameter
TL431C
TL431AC
Unit
Min. Typ. Max. Min. Typ. Max.
Reference input voltage
Vref
VKA = Vref , Ik = 10 mA, Tamb = 25°C
Tmin Tamb Tmax
2.44 2.495 2.55 2.47 2.495 2.52 V
2.423
2.567 2.453
2.537
ΔVref
Reference input voltage deviation over temperature
range (1)
VKA = Vref, Ik = 10 mA, Tmin Tamb Tmax
3 17
mV
3 15
Ratio of change in reference input voltage to change
Δ----V---r--e---f
ΔVka
in cathode to anode voltage
Ik = 10mA - ΔVKA = 10V to Vref
ΔVKA = 36V to 10V
-2.7 -1.4
-2 -1
-2.7 -1.4
-2 -1
mV/V
Reference input current
Iref
Ik = 10mA, R1 = 10kΩ, R2 =
Tamb = 25°C
Tmin Tamb Tmax
1.8 4
5.2
µA
1.8 4
5.2
Reference input current deviation over temperature
range
ΔIref
Ik = 10mA, R1 = 10kΩ, R2 =
Tmin Tamb Tmax
0.4 1.2
µA
0.4 1.2
Minimum cathode current for regulation
Imin
VKA = Vref
0.5 1
mA
0.5 0.6
Ioff
ZKA
Off-state cathode current
Dynamic impedance (2)
VKA = Vref , Δ Ik = 1 to100mA, f 1kHZ
2.6 1000
0.22 0.5
2.6 1000 nA
Ω
0.22 0.5
1. See definition of Reference input voltage deviation over temperature range.
2. The dynamic impedance is defined as | ZKA| = Δ-----V----K----A--
ΔIk
4/15
 

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