參數(shù)資料
型號: TL431ACD
廠商: STMICROELECTRONICS
元件分類: 基準電壓源/電流源
英文描述: 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.495 V, PDSO8
封裝: ROHS COMPLIANT, MICRO, BATWING, PLASTIC, SOP-8
文件頁數(shù): 11/16頁
文件大?。?/td> 204K
代理商: TL431ACD
Electrical characteristics
TL431
4/16
Doc ID 4467 Rev 7
3
Electrical characteristics
Table 3.
TL431C: 0° C to 70° C (Tamb = 25° C unless otherwise specified)
Symbol
Parameter
TL431C
TL431AC
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
Vref
Reference input voltage
VKA = Vref, Ik = 10 mA, Tamb =25° C
Tmin ≤ Tamb ≤ Tmax
2.44
2.423
2.495
2.55
2.567
2.47
2.453
2.495
2.52
2.537
V
ΔVref
Reference input voltage deviation over temperature
range (1)
VKA = Vref, Ik = 10 mA, Tmin ≤ Tamb ≤ Tmax
317
3
15
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
5.2
1.8
4
5.2
A
ΔIref
Reference input current deviation over temperature
range
Ik = 10 mA, R1 = 10 kΩ, R2 =∞
Tmin ≤ Tamb ≤ Tmax
0.4
1.2
0.4
1.2
A
Imin
Minimum cathode current for regulation
VKA = Vref
0.5
1
0.5
0.6
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 ≤ 1 kHZ
0.22
0.5
0.22
0.5
Ω
1.
2.
The dynamic impedance is defined as
| ZKA| =
ΔVref
ΔVka
------------
ΔV
KA
I
k
Δ
---------------
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