TL431, TL432
Table 5.
Symbol
Electrical characteristics
TL431IY (T
amb
= 25°C unless otherwise specified)
TL431IY
Parameter
Min.
Reference input voltage
V
KA
= V
ref
, I
k
= 10 mA
T
min
≤
T
amb
≤
T
max
Reference input voltage deviation over temperature
range
(1)
V
KA
= V
ref
, I
k
= 10 mA, T
min
≤
T
amb
≤
T
max
Ratio of change in reference input voltage to change
in cathode to anode voltage
I
k
= 10 mA,
ΔV
KA
= 10 V to V
ref
I
k
= 10 mA,
ΔV
KA
= 36 V to 10 V
Reference input current
I
k
= 10 mA, R1 = 10 kΩ, R2 =
∞
T
min
≤
T
amb
≤
T
max
Reference input current deviation over temperature
range
I
k
= 10 mA, R1 = 10 kΩ, R2 =
∞,
T
min
≤
T
amb
≤
T
max
Minimum cathode current for regulation
V
KA
= V
ref
Off-state cathode current
T
min
≤
T
amb
≤
T
max
Dynamic impedance
(2)
V
KA
= V
ref
,
Δ
I
k
= 1 to 100 mA, F
≤
1 kHz
Typ.
Max.
Min.
Typ.
Max.
TL431AIY
Unit
V
ref
2.44 2.495 2.55
2.41
2.58
2.47 2.495 2.52
2.44
2.55
V
ΔV
ref
7
30
7
30
mV
ΔVref
------------
ΔVka
-2.7
-2
-1.4
-1
1.8
4
6.5
-2.7
-2
-1.4
-1
1.8
4
6.5
mV/V
I
ref
µA
ΔI
ref
0.8
0.5
2.6
2.5
1
1000
3000
0.5
0.8
0.5
2.6
1.2
0.6
1000
3000
0.5
µA
mA
nA
I
min
I
off
⏐ZKA⏐
0.22
0.22
Ω
1. See definition of
below.
ΔV
KA
2. The dynamic impedance is defined as
|
ZKA
|
=
---------------
-
Δ
I
k
3.1
Reference input voltage deviation over temperature range
Δ
V
ref
is defined as the difference between the maximum and minimum values obtained over
the full temperature range.
Δ
V
ref
= V
ref max
- V
ref min
Figure 6.
Reference input voltage deviation over temperature range
Doc ID 4467 Rev 11
7/21
STMICROELECTRONICS [ STMICROELECTRONICS ]
