LM431A Fairchild Semiconductor, LM431A Datasheet - Page 3

• Manufacturer Part Number: LM431A
• Description: The LM431A/LM431B/LM431C are three-terminal output adjustable regulators with thermal stability over operating temperature range
• Manufacturer: Fairchild Semiconductor

Electrical Characteristics
(T
Note1
• LM431
• LM431
Parameter
Reference
Input Voltage
Deviation of
Reference
Input Voltage
Over-
Temperature
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 Cur-
rent for
Regulation
Off - Stage
Cathode
Current
Dynamic
Impedance
A
= +25°C, unless otherwise specified)
X
X
C : T
I : T
MIN
MIN
ΔI
Symbol
I
I
= -40
ΔV
ΔV
KA(OFF)
KA(MIN)
V
ΔV
= -25
REF
I
Z
REF
ΔT
REF
REF
REF
KA
KA
/ΔT
°
C, T
°
/
/
C, T
MAX
V
V
T
I
=10mA
I
R
I
R
T
V
V
V
V
I
f ≥1.0kHz
KA
KA
KA
KA
MAX
MIN
A
KA
KA
KA
KA
REF
KA
1
1
=10kΩ,R
=10kΩ,R
=10mA,
=10mA,
=Full Range
=1 to 100mA
=V
=V
=36V,
=V
= +85
= V
≤T
=0
= +85
Conditions
REF
REF
REF
A
REF
≤T
°
C
, I
,
MAX
2
2
°
ΔV
V
ΔV
10V
, I
C
=∞
=∞
KA
REF
KA
KA
KA
=10mA
=10mA
=10V-
=36V-
2.450 2.500 2.550 2.470 2.495 2.520 2.482 2.495 2.508
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
-
-
-
-
-
-
-
-
LM431A
0.45
0.05
0.15
-1.0
-0.5
4.5
1.5
0.4
-2.7
-2.0
1.2
1.0
1.0
0.5
17
4
-
-
-
-
-
-
-
-
LM431B
0.45
0.05
0.15
-1.0
-0.5
4.5
1.5
0.4
-2.7
-2.0
1.2
1.0
1.0
0.5
17
4
-
-
-
-
-
-
-
-
LM431A/LM431B/LM431C
LM431C
0.45
0.05
0.15
-1.0
-0.5
4.5
1.5
0.4
-2.7
-2.0
1.2
1.0
1.0
0.5
17
4
mV/V
Unit
mV
mA
μA
μA
μA
Ω
V
3