lm431ac-mdc National Semiconductor Corporation, lm431ac-mdc Datasheet - Page 4

• Manufacturer Part Number: lm431ac-mdc
• Description: Adjustable Precision Zener Shunt Regulator
• Manufacturer: National Semiconductor Corporation

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V
V
I
∝ I
I
I
r
REF
Z(MIN)
Z(OFF)
Z
Symbol
REF
DEV
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
LM431
Electrical Characteristics
T
REF
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device
beyond its rated operating conditions.
Note 3: T
Note 4: Ratings apply to ambient temperature at 25˚C. Above this temperature, derate the TO-92 at 6.2 mW/˚C, the SO-8 at 6.5 mW/˚C, the SOT-23 at 2.2 mW/˚C
and the micro SMD at 3mW/˚C.
Note 5: Deviation of reference input voltage, V
Storage Temperature Range
Operating Temperature Range
Soldering Information
Cathode Voltage
Continuous Cathode Current
A
Industrial (LM431xI)
Commercial (LM431xC)
Infrared or Convection (20 sec.)
Wave Soldering (10 sec.)
= 25˚C unless otherwise specified
J Max
Reference Voltage
Deviation of Reference Input Voltage Over
Temperature (Note 5)
Ratio of the Change in Reference Voltage
to the Change in Cathode Voltage
Reference Input Current
Deviation of Reference Input Current over
Temperature
Minimum Cathode Current for Regulation
Off-State Current
Dynamic Output Impedance (Note 6)
= 150˚C.
Parameter
DEV
, is defined as the maximum variation of the reference input voltage over the full temperature range.
260˚C (lead temp.)
−65˚C to +150˚C
−10 mA to +150
−40˚C to +85˚C
0˚C to +70˚C
(Note 2)
235˚C
37V
mA
V
LM431A (Figure 1 )
V
LM431B (Figure 1 )
V
LM431C (Figure 1 )
V
T
(Figure 2 )
R
I
R
I
T
V
V
TARGET FOR fi* )
V
Frequency = 0 Hz (Figure 1 )
V
Frequency = 0 Hz (Figure 1 )
I
I
I
A
A
Z
Z
Z
Z
Z
Z
Z
Z
Z
1
1
= 10 mA (Figure 2 )
= 10 mA,
= V
= V
= V
= V
= Full Range (Figure 1 )
= 10 mA
= Full Range (Figure 2 )
= V
= 36V, V
= V
= V
= 10 kΩ, R
= 10 kΩ, R
4
REF
REF
REF
REF
REF
REF
REF
, I
, I
, I
, I
, LM431A,
, LM431B, LM431C
(Figure 1 )
Reference Voltage
Reference Input Current
Internal Power Dissipation (Notes 3,
4)
Cathode Voltage
Cathode Current
REF
I
I
I
I
Conditions
= 10 mA
= 10 mA
= 10 mA
= 10 mA,
TO-92 Package
SO-8 Package
SOT-23 Package
micro SMD Package
V
2
2
V
Z
=
=
= 0V (Figure *NO
Z
from 10V to 36V
from V
∞
∞
,
,
REF
Operating Conditions
to 10V
2.440
2.470
2.485
Min
1.0 mA
V
Min
REF
2.495
2.495
2.500
−1.4
−1.0
Typ
8.0
2.0
0.4
0.4
0.3
2.550
2.520
2.510
Max
−2.7
−2.0
0.75
0.50
100 mA
4.0
1.2
1.0
1.0
17
Max
37V
10 mA
0.78W
0.81W
0.28W
0.30W
−0.5V
Units
mV/V
mV
mA
µA
µA
µA
Ω
Ω
V
V
V