LM431SAI Fairchild Semiconductor, LM431SAI Datasheet - Page 3

• Manufacturer Part Number: LM431SAI
• Manufacturer: Fairchild Semiconductor

Electrical Characteristics
(T
Note:
1. T
2. The deviation parameters V
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
Current for Regulation
Off -Stage Cathode
Current
Dynamic Impedance
A
αV
obtained over the rated temperature range. The average full-range temperature coefficient of the reference input voltage,
αV
where T
αV
temperature.
MIN
= +25°C, unless otherwise specified)
REF
REF
Parameter
REF
= -40°C, T
Example: V
Because minimum V
, is defined as:
can be positive or negative depending on whether minimum V
MAX
⎛
⎝
ppm
----------- -
°C
-T
MAX
MIN
REF(dev)
⎞
⎠
=
is the rated operating free-air temperature range of the device.
= +85°C
⎛
⎝
--------------------------------------------------------- -
--------------------------------------
V
Δ
V
V
REF
I
Symbol
REF
I
= 4.5mV, V
I
REF(dev)
REF(dev)
REF
KA(OFF)
V
REF(dev)
KA(MIN)
V
I
Z
T
REF
REF dev
REF
KA
MAX
(
occurs at the lower temperature, the coefficient is positive.
/
Δ
at25°C
V
(
KA
and I
–
REF
T
)
αV
V
V
T
I
I
R
I
R
T
V
V
V
I
REF(dev)
KA
KA
KA
KA
MIN
MIN
MIN
KA
KA
1
1
KA
KA
KA
= 2500 mV at 25 °C, T
)
REF
=10KΩ,R
=10KΩ,R
⎞ 10
⎠
=10mA,
=10mA,
=1 to 100mA ,f ≥1.0kHz
=10mA
=V
=V
=V
=36V, V
=V
≤T
≤T
⋅
REF
REF
REF
REF
A
A
=
≤T
≤T
are defined as the differences between the maximum and minimum values
⎛
⎝
------------------------------------------
6
, I
, I
,
---------------------- -
2500mV
MAX
MAX
2
2
4.5mV
REF
KA
KA
Conditions
=∞
=∞
V
V
125°C
REF(min)
REF(max)
=10mA
=10mA
=0
Δ
Δ
V
V
⎞ 10
⎠
KA
KA
⋅
=10V-V
=36V-10V
MAX
6
=
REF
-T
14.4ppm °C
REF
MIN
or maximum V
= 125 °C for LM431SAI.
⁄
T
2.450
MAX
Min.
-
-
-
-
-
-
-
-
REF
-T
MIN
, respectively, occurs at the lower
LM431SAI
2.500
Typ.
0.45
0.05
0.15
-1.0
-0.5
1.5
0.8
5
Max.
2.550
-2.7
-2.0
1.0
1.0
0.5
20
4
2
V
REF(dev)
LM431SAI
mV/V
Unit
mV
mA
μ
μ
μ
V
Ω
A
A
A
3