參數(shù)資料
型號(hào): TL431ACZ-AP
廠商: STMICROELECTRONICS
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.495 V, PBCY3
封裝: PLASTIC, TO-92, 3 PIN
文件頁(yè)數(shù): 13/16頁(yè)
文件大小: 204K
代理商: TL431ACZ-AP
Electrical characteristics
TL431
6/16
Doc ID 4467 Rev 7
3.1
Reference input voltage deviation over temperature range
ΔVref is defined as the difference between the maximum and minimum values obtained over
the full temperature range.
ΔVref = Vref max - Vref min
Figure 4.
Reference input voltage deviation over temperature range
Table 5.
TL431IY: -40° C to 125° C, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
TL431IY
TL431AIY
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
Vref
Reference input voltage
VKA = Vref, Ik = 10 mA
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
Ik = 10 mA, 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 = ∞
Tmin ≤ Tamb ≤Tmax
1.8
4
6.5
1.8
4
6.5
A
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
A
Imin
Minimum cathode current for regulation
VKA = Vref
0.5
1
0.5
0.6
mA
Ioff
Off-state cathode current
Tmin ≤ Tamb ≤ Tmax
2.6
1000
3000
2.6
1000
3000
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.
2.
The dynamic impedance is defined as
| ZKA| =
ΔVref
ΔVka
------------
ΔV
KA
I
k
Δ
---------------
T1
T2
Temperature
V ref max.
V ref min.
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