LM4040AIZ-5.0 National Semiconductor, LM4040AIZ-5.0 Datasheet - Page 16

• Manufacturer Part Number: LM4040AIZ-5.0
• Description: Precision Micropower Shunt Voltage Reference
• Manufacturer: National Semiconductor

www.national.com
Electrical Characteristics(Notes)
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed
specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test condi-
tions.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
bient thermal resistance), and T
given in the Absolute Maximum Ratings, whichever is lower. For the LM4040, T
326˚C/W for the SOT-23 package, and 180˚C/W with 0.4" lead length and 170˚C/W with 0.125" lead length for the TO-92 package.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 k resistor into each pin. The machine model is a 200 pF capacitor discharged di-
rectly into each pin.
Note 4: Typicals are at T
Note 5: Limits are 100% production tested at 25˚C. Limits over temperature are guaranteed through correlation using Statistical Quality Control (SQC) methods.
The limits are used to calculate National’s AOQL.
Note 6: The boldface (over-temperature) limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance
T
max T = 65˚C is shown below:
The total over-temperature tolerance for the different grades in the exteded temperature range where max T = 100 ˚C is shown below:
Therefore, as an example, the A-grade LM4040-2.5 has an over-temperature Reverse Breakdown Voltage tolerance of
±
[( V
MIN
R
or T
/ T)(max T)(V
MAX
, and V
R
R
)]. Where, V
is the reverse breakdown voltage. The total over-temperature tolerance for the different grades in the industrial temperature range where
J
= 25˚C and represent most likely parametric norm.
A
(ambient temperature). The maximum allowable power dissipation at any temperature is PD
R
/ T is the V
C-grade:
D-grade:
E-grade:
A-grade:
B-grade:
C-grade:
D-grade:
E-grade:
R
temperature coefficient, max T is the maximum difference in temperature from the reference point of 25˚C to
±
±
±
±
±
±
±
±
4.5% =
0.75% =
0.85% =
2.98% =
1.5% =
2.5% =
1.15% =
1.98% =
±
±
±
±
±
±
±
±
0.5%
1.0%
2.0%
0.1%
0.2%
0.5%
1.0%
2.0%
16
Jmax
±
±
±
±
±
±
±
±
100 ppm/˚C x 100˚C
150 ppm/˚C x 100˚C
150 ppm/˚C x 100˚C
= 125˚C, and the typical thermal resistance (
100 ppm/˚C x 65˚C
100 ppm/˚C x 65˚C
100 ppm/˚C x 65˚C
150 ppm/˚C x 65˚C
150 ppm/˚C x 65˚C
Jmax
(maximum junction temperature),
±
2.5V x 0.75% =
max
= (T
JA
Jmax
), when board mounted, is
− T
±
19 mV.
A
)/
JA
JA
(junction to am-
or the number