Datasheet
LM4040/LM4041
DS20005757B-page 8 2017-2018 Microchip Technology Inc.
LM4040-5.0 ELECTRICAL CHARACTERISTICS (Note 1)
T
A
= Operating Temperature Range, T
A
= T
J
= –40°C to +85°C, unless noted.
Parameters Sym. Min. Typ. Max. Units Conditions
LM4040C
Reverse-Breakdown Voltage V
R
— 5.000 — V I
R
= 100 µA, T
A
= +25°C
Reverse-Breakdown Voltage
Tolerance (Note 2)
——±25mVI
R
= 100 µA, T
A
= +25°C
——±58mVI
R
= 100 µA
Minimum Operating Current I
RMIN
—5474µAT
A
= +25°C
——80 —
Average Reverse-Breakdown
Voltage Temperature
Coefficient
V
R
/
T
— ±30 — ppm/°C I
R
= 10 mA, T
A
= +25°C
— ±20 ±100 I
R
= 1 mA
—±20— I
R
= 100 µA, T
A
= +25°C
Reverse-Breakdown Voltage
Change with Operating
Current Change
V
R
/I
R
—0.51.0mVI
RMIN
I
R
1mA,
T
A
= +25°C
——1.4 I
RMIN
I
R
1mA
—3.58.0 1mA I
R
15 mA,
T
A
= +25°C
— — 12.0 1 mA I
R
15 mA
Reverse Dynamic Impedance Z
R
—0.51.1 I
R
= 1 mA, f = 120 Hz,
I
AC
= 0.1 I
R
, T
A
= +25°C
Wideband Noise e
N
—80—µV
RMS
I
R
= 100 µA, T
A
= +25°C,
10 Hz f 10 kHz
Reverse-Breakdown Voltage
Long-Term Stability
V
R
— 120 — ppm t = 1000 hrs., T
A
= +25°C
±0.1°C, I
R
= 100 µA
LM4040D
Reverse-Breakdown Voltage V
R
— 5.000 — V I
R
= 100 µA, T
A
= +25°C
Reverse-Breakdown Voltage
Tolerance (Note 2)
——±50mVI
R
= 100 µA, T
A
= +25°C
——±99mVI
R
= 100 µA
Minimum Operating Current I
RMIN
—5479µAT
A
= +25°C
——85 —
Average Reverse-Breakdown
Voltage Temperature
Coefficient
V
R
/
T
— ±30 — ppm/°C I
R
= 10 mA, T
A
= +25°C
— ±20 ±150 I
R
= 1 mA
—±20— I
R
= 100 µA, T
A
= +25°C
Note 1: Specification for packaged product only.
2: The boldface (overtemperature) limit for Reverse-Breakdown Voltage Tolerance is defined as the room
temperature Reverse-Breakdown Voltage Tolerance ±[(V
R
/T)(65°C)(V
R
)]. V
R
/T is the V
R
tempera-
ture coefficient, 65°C is the temperature range from –40°C to the reference point of 25°C, and V
R
is the
reverse-breakdown voltage. The total overtemperature tolerance for the different grades follows:
a. C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
b. D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
Example: The C-grade LM4040-2.5 has an overtemperature Reverse-Breakdown Voltage tolerance of
±2.5 × 1.15% = ±29 mV.