TL431
RECOMMENDED OPERATING CONDITIONS
Characteristic
Cathode Voltage
Cathode Current
Symbol
V
KA
I
K
Test Condition
Min
V
REF
0.5
Typ
Max
40
100
Unit
V
mA
ELECTRICAL CHARACTERISTICS
(T
a
= 25
o
C, V
KA
= V
REF
, I
K
= 10mA unless otherwise specified)
Characteristic
Reference Input Voltage
Symbol
V
REF
Test Condition
V
KA
= V
REF
, I
K
= 10mA
2.440
TL431 (2%)
TL431-A (1%)
TL431-C (0.5%)
Deviation of Reference Input
Voltage Over Full Temperature
Range
Ratio of Change in Reference Input
Voltage to the Change in Cathode
Voltage
Reference Input Current
Deviation of Reference Input
Current Over Full Temperature
Range
Minimum Cathode Current for
Regulation
Off-State Cathode Current
Dynamic Impedance
V
REF(dev)
T
min
≤
Ta
≤
T
max
3
17
MV
2.470
2.482
2.495
2.495
2.495
2.550
2.520
2.508
V
Min
Typ
Max
Unit
Δ
V
REF
Δ
V
K A
I
REF
I
REF(dev)
ΔV
KA
= 10V-V
REF
ΔV
KA
= 36V- 10V
R
1
= 10KΩ, R
2
=
∞
R
1
= 10KΩ, R
2
=
∞
-1.4
-1.0
1.8
0.4
-2.7
mV/V
-2.0
4
1.2
㎂
㎂
I
K(min)
I
K(off)
Z
KA
V
KA
= 40 V, V
REF
= 0
I
K
= 10mA to 100 mA , f
≤
1.0KHz
0.25
0.26
0.22
0.5
0.9
0.5
mA
㎂
Ω
TEST CIRCUITS
Figure 1. Test Circuit for V
KA
= V
REF
Figure 2. Test Circuit for V
KA
≥
V
REF
Figure 3. Test Circuit for I
off
INPUT
V
K A
I
K (OFF)
TL431
TL431
BT432
TL431
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
