TL431 STMicroelectronics, TL431 Datasheet - Page 6

• 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

Electrical characteristics
Table 4.
1. See definition of
2. The dynamic impedance is defined as
6/21
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
ΔV
= 10 mA, R1 = 10 kΩ, R2 = ∞
T
T
I
T
V
V
k
k
TL431I/TL432I: -40° C to 105° C, T
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 range
= 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
(2)
Parameter
min
|
amb
ZKA
≤ T
= 25° C
ref
|
=
amb
ΔV
--------------- -
≤ T
Doc ID 4467 Rev 10
Δ
I
KA
k
max
amb
= 25°C (unless otherwise specified)
Min.
2.44
2.41
-2.7
-2
TL431I/TL432I
2.495 2.55
Typ.
0.22
-1.4
1.8
0.8
0.5
2.6
-1
7
Max.
1000
2.58
below.
6.5
2.5
0.5
30
4
1
Min.
2.47
2.44
TL431AI/TL432AI
-2.7
-2
2.495 2.52
Typ.
0.22
-1.4
1.8
0.8
0.5
2.6
-1
7
TL431, TL432
Max.
1000
2.55
6.5
1.2
0.7
0.5
30
4
mV/V
Unit
mV
mA
µA
µA
nA
V
Ω