LM4051 National Semiconductor, LM4051 Datasheet - Page 5

• Manufacturer Part Number: LM4051
• Description: Precision Micropower Shunt Voltage Reference
• Manufacturer: National Semiconductor

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 LM4051, T
280˚C/W for the SSOT-23 package.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 k
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:
Therefore, as an example, the A-grade LM4051-1.2 has an over-temperature Reverse Breakdown Voltage tolerance of
Note 7: When V
the die (-) output and the package (-) output pin. See the Output Saturation curve in the Typical Performance Characteristics section.
Note 8: Reference voltage and temperature coefficient will change with output voltage. See Typical Performance Characteristics curves.
Note 9: Long term stability is V
Note 10: Thermal hysteresis is defined as the changes in 25˚C output voltage before and after cycling the device from −40˚C or +125˚C.
Typical Performance Characteristics
Temperature Drift for Different
Average Temperature Coefficient
rectly into each pin.
Note 4: Typicals are at T
±
[( V
MAX
Electrical Characteristics (continued)
R
or T
/ T)(max T)(V
MIN
, and V
OUT
R
1.6V, the LM4051-ADJ in the SSOT-23 package must operate at reduced I
R
is the reverse breakdown voltage. The total over-temperature tolerance for the different grades in the industrial temperature range where
)]. Where, V
J
= 25˚C and represent most likely parametric norm.
A
R
(ambient temperature). The maximum allowable power dissipation at any temperature is PD
@
25˚C measured during 1000 hrs.
R
/ T is the V
R
temperature coefficient, max T is the maximum difference in temperature from the reference point of 25 ˚C to
DS101222-19
A-grade:
B-grade:
C-grade:
±
±
±
0.425% =
0.522% =
0.825% =
Output Impedance vs Frequency
5
Jmax
±
±
±
resistor into each pin. The machine model is a 200 pF capacitor discharged di-
0.1%
0.2%
0.5%
= 125˚C, and the typical thermal resistance (
±
±
±
50 ppm/˚C x 65˚C
50 ppm/˚C x 65˚C
50 ppm/˚C x 65˚C
R
. This is caused by the series resistance of the die attach between
Jmax
(maximum junction temperature),
±
1.2V x 0.425% =
max
= (T
JA
Jmax
), when board mounted, is
DS101222-4
− T
±
5.2 mV.
A
)/
JA
JA
(junction to am-
www.national.com
or the number