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TL431CD 数据表(PDF) 3 Page - STMicroelectronics

部件名 TL431CD
功能描述  PROGRAMMABLE VOLTAGE REFERENCE
Download  10 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TL431CD 数据表(HTML) 3 Page - STMicroelectronics

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TL431
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ELECTRICAL CHARACTERISTICS
T
amb = 25°C (unless otherwise specified)
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.
2) The dynamic Impedance is definied as
ZKA =
Symbol
Parameter
TL431I
TL431AI
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
∆V
ref
Reference Input Voltage Deviation Over-
Temperature Range - note 1
VKA = Vref , Ik =10 mA,TminTambTmax
7
30
7
30
mV
Ratio of Change in Reference Input
Voltage to Change in Cathode to Anode
Voltage
Ik = 10mA
∆V
KA = 10V to Vref
∆V
KA = 36V to 10V
-1.4
-1
-2.7
-2
-1.4
-1
-2.7
-2
mV/V
Iref
Reference Input Current
Ik = 10mA, R1 = 10k
Ω, R2 = ∞
Tamb = 25°C
Tmin Tamb Tmax
1.8
4
6.5
1.8
4
6.5
µA
∆Iref
Reference Input Current Deviation
Over Temperature Range
Ik = 10mA, R1 = 10k
Ω, 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 note 2
VKA = Vref ,∆ Ik = 1 to100mA, f 1kHZ
0.22
0.5
0.22
0.5
∆Vref
∆Vka
------------
T1
T2
Temperature
V ref max.
V ref min.
∆VKA
∆IK
-----------------


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