TL431 STMicroelectronics, TL431 Datasheet - Page 7

• Manufacturer Part Number: TL431
• Description: Programmable Voltage Reference
• Manufacturer: STMicroelectronics

Specifications of TL431

• Adjustable Output Voltage: 2.5 to 36 V
• Sink Current Capability: 1 to 100 mA
• Typical Output Impedance: 0.22 Ω

TL431, TL432
Table 5.
1. See definition of
2. The dynamic impedance is defined as
3.1
Symbol
⏐ZKA⏐
ΔVref
------------
ΔV
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
I
= 10 mA, R1 = 10 kΩ, R2 = ∞
T
I
T
V
T
V
k
k
k
TL431IY: -40° C to 125° C, T
Reference input voltage deviation over temperature range
Δ
the full temperature range.
Figure 6.
min
min
max
min
KA
KA
KA
KA
= 10 mA, ΔV
= 10 mA, ΔV
= 10 mA, R1 = 10 kΩ, R2 = ∞, T
V
ref
(1)
= V
= V
= V
= V
≤ T
≤ T
≤ T
Section 3.1: Reference input voltage deviation over temperature range
Δ
is defined as the difference between the maximum and minimum values obtained over
V
ref
ref
ref
ref
amb
amb
amb
ref
, I
, I
, Δ I
k
k
= V
≤ T
≤ T
≤ T
= 10 mA
= 10 mA, T
k
KA
KA
Reference input voltage deviation over temperature range
= 1 to 100 mA, F ≤ 1 kHz
max
ref max
max
max
= 10 V to V
= 36 V to 10 V
(2)
Parameter
- V
|
min
ZKA
ref min
≤ T
ref
|
=
amb
amb
min
ΔV
--------------- -
Doc ID 4467 Rev 10
Δ
≤ T
I
KA
k
≤ T
= 25°C (unless otherwise specified)
max
amb
≤
Min.
2.44
2.41
-2.7
-2
TL431IY
2.495 2.55
Typ.
0.22
-1.4
1.8
0.8
0.5
2.6
-1
7
Max.
1000
3000
2.58
below.
6.5
2.5
0.5
30
4
1
Electrical characteristics
Min.
2.47
2.44
-2.7
-2
TL431AIY
2.495 2.52
Typ.
0.22
-1.4
1.8
0.8
0.5
2.6
-1
7
Max.
1000
3000
2.55
6.5
1.2
0.6
0.5
30
4
mV/V
Unit
mV
mA
µA
µA
nA
V
Ω
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