TL431 STMicroelectronics, TL431 Datasheet - Page 5
TL431
Manufacturer Part Number
TL431
Description
Programmable Voltage Reference
Manufacturer
STMicroelectronics
Datasheet
1.TL431.pdf
(21 pages)
Specifications of TL431
Adjustable Output Voltage
2.5 to 36 V
Sink Current Capability
1 to 100 mA
Typical Output Impedance
0.22 Ω
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TL431, TL432
3
Table 3.
1. See definition of
2. The dynamic impedance is defined as
Symbol
⏐ZKA⏐
ΔV
ΔVref
------------
ΔVka
ΔI
V
I
I
I
min
ref
off
ref
ref
ref
Reference input voltage
Reference input voltage deviation over temperature
range
Ratio of change in reference input voltage to change
in cathode to anode voltage
Reference input current
I
Reference input current deviation over temperature
range
Minimum cathode current for regulation
Off-state cathode current
Dynamic impedance
k
V
T
V
I
ΔV
= 10 mA, R1 = 10 kΩ, R2 = ∞
T
T
I
T
V
V
Electrical characteristics
TL431C: 0° C to 70° C (T
k
k
min
amb
min
min
KA
KA
KA
KA
= 10 mA - ΔV
= 10 mA, R1 = 10 kΩ, R2 =∞
KA
(1)
= V
= V
= V
= V
≤ T
≤ T
≤ T
Section 3.1: Reference input voltage deviation over temperature
= 25° C
= 36 V to 10 V
ref
ref
ref
ref
amb
amb
amb
, I
, I
, Δ I
k
k
≤ T
≤ T
≤ T
= 10 mA, T
= 10 mA, T
k
KA
= 1 to 100 mA, f ≤ 1 kHZ
max
max
max
= 10 V to V
Parameter
(2)
|
amb
min
ZKA
≤ T
= 25° C
|
amb
ref
=
amb
ΔV
--------------- -
= 25° C unless otherwise specified)
Doc ID 4467 Rev 10
Δ
≤ T
I
KA
k
max
2.423
Min.
2.44
-2.7
-2
TL431C
2.495 2.55
Typ.
0.22
-1.4
1.8
0.4
0.5
2.6
-1
3
range.
2.567
Max.
1000
5.2
1.2
0.5
17
4
1
Electrical characteristics
2.453
Min.
2.47
-2.7
-2
TL431AC
2.495 2.52
Typ.
0.22
-1.4
1.8
0.4
0.5
2.6
-1
3
2.537
Max.
1000
5.2
1.2
0.6
0.5
15
4
mV/V
Unit
mV
mA
µA
µA
nA
Ω
V
5/21