LM431BCM National Semiconductor, LM431BCM Datasheet - Page 4

• Manufacturer Part Number: LM431BCM
• Description: IC, ADJ SHUNT REG, 2.495V, 1%, 8-SOIC
• Manufacturer: National Semiconductor

Specifications of LM431BCM

• Topology: Shunt, Programmable
• Reference Voltage: 2.495V
• Reference Voltage Tolerance: 24.95mV
• Voltage Reference Case Style: SOIC
• No. Of Pins: 8
• Temperature Coefficient: 50ppm/°C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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V
V
I
I
I
r
REF
I
Z(MIN)
Z(OFF)
Z
REF
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
Note 1: 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 2: T
Note 3: 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.
Note 4: Deviation of reference input voltage, V
Storage Temperature Range
Operating Temperature Range
Soldering Information
Cathode Voltage
Continuous Cathode Current
Reference Voltage
Reference Input Current
Internal Power Dissipation
A
Industrial (LM431xI)
Commercial (LM431xC)
Infrared or Convection (20 sec.)
Wave Soldering (10 sec.)
Note
= 25°C unless otherwise specified
TO-92 Package
SO-8 Package
SOT-23 Package
J Max
3)
Reference Voltage
Deviation of Reference Input Voltage Over
Temperature
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
= 150°C.
(Note
(Note
Parameter
4)
2,
DEV
(Note
−10 mA to +150 mA
, 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
−40°C to +85°C
5)
0°C to +70°C
(Note
10 mA
0.78W
0.81W
0.28W
1)
235°C
−0.5V
37V
V
LM431A
V
LM431B
V
LM431C
V
T
(Figure 2
R
I
R
I
T
V
V
V
Frequency = 0 Hz
V
Frequency = 0 Hz
I
I
I
Z
Z
Z
Z
A
A
Z
Z
Z
Z
1
1
Z
= 10 mA
= 10 mA,
= V
= V
= V
= V
= Full Range
= 10 kΩ, R
= 10 kΩ, R
= Full Range
= V
= 36V, V
= V
= V
= 10 mA
4
REF
REF
REF
REF
REF
REF
REF
(Figure 1
(Figure 1
(Figure 1
)
, I
, I
, I
, I
, LM431A,
, LM431B, LM431C
(Figure 1
(Figure 2
Operating Conditions
Cathode Voltage
Cathode Current
I
I
I
I
REF
Conditions
= 10 mA
= 10 mA
= 10 mA
= 10 mA,
2
2
V
=
=
V
Z
= 0V
(Figure 1
(Figure 2
Z
from 10V to 36V
∞
∞
(Figure 1
(Figure 1
)
)
from V
)
,
,
)
)
(Figure
REF
)
)
)
)
3)
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
−2.7
−2.0
Max
0.75
0.50
4.0
1.2
1.0
1.0
100 mA
17
Max
37V
Units
mV/V
mV
mA
μA
μA
μA
V
V
V
Ω
Ω