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TL431ACD 数据表(PDF) 6 Page - STMicroelectronics

部件名 TL431ACD
功能描述  Programmable voltage reference
Download  21 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TL431ACD 数据表(HTML) 6 Page - STMicroelectronics

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Electrical characteristics
TL431, TL432
6/21
Doc ID 4467 Rev 11
Table 4.
TL431I/TL432I (Tamb = 25°C unless otherwise specified)
Symbol
Parameter
TL431I/TL432I
TL431AI/TL432AI
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
Vref
Reference input voltage
VKA = Vref, Ik = 10 mA, Tamb = 25° C
Tmin ≤ Tamb ≤ Tmax
2.44
2.41
2.495
2.55
2.58
2.47
2.44
2.495
2.52
2.55
V
ΔVref
Reference input voltage deviation over temperature
range (1)
VKA = Vref, Ik =10 mA, Tmin≤ Tamb≤ Tmax
730
7
30
mV
Ratio of change in reference input voltage to change
in cathode to anode voltage
Ik = 10 mA, ΔVKA = 10 V to Vref
ΔVKA = 36 V to 10 V
-2.7
-2
-1.4
-1
-2.7
-2
-1.4
-1
mV/V
Iref
Reference input current
Ik = 10 mA, R1 = 10 kΩ, R2 = ∞
Tamb = 25° C
Tmin ≤ Tamb ≤ Tmax
1.8
4
6.5
1.8
4
6.5
µA
ΔIref
Reference input current deviation over temperature
range
Ik = 10 mA, R1 = 10 kΩ, R2 = ∞
Tmin ≤ Tamb ≤ Tmax
0.8
2.5
0.8
1.2
µA
Imin
Minimum cathode current for regulation
VKA = Vref
0.5
1
0.5
0.7
mA
Ioff
Off-state cathode current
2.6
1000
2.6
1000
nA
⏐ZKA⏐
Dynamic impedance (2)
VKA = Vref, Δ Ik = 1 to 100 mA, f ≤ 1kHZ
0.22
0.5
0.22
0.5
Ω
1.
See definition of
Section 3.1: Reference input voltage deviation over temperature range below.
2.
The dynamic impedance is defined as
|ZKA| =
ΔVref
ΔVka
------------
ΔV
KA
I
k
Δ
----------------


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