LM431BCM National Semiconductor, LM431BCM Datasheet - Page 5

• 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

1005507
The average temperature coefficient of the reference input voltage, V
, is defined as:
REF
Where:
T
− T
= full temperature change (0-70°C).
2
1
V
can be positive or negative depending on whether the slope is positive or negative.
REF
Example: V
= 8.0 mV, V
= 2495 mV, T
− T
= 70°C, slope is positive.
DEV
REF
2
1
Note 5: The dynamic output impedance, r
, is defined as:
Z
When the device is programmed with two external resistors, R1 and R2, (see
Figure 2
), the dynamic output impedance of the overall circuit, r
, is defined as:
Z
Equivalent Circuit
1005503
5
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