LM4040/4041
Micrel, Inc.
Boldface limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= 25°C. The grades C and D designate initial Reverse Break-
down Voltage tolerance of ±0.5% and ± 1.0%, respectively.
Symbol
V
R
Parameter
Reverse Breakdown Voltage
Reverse Breakdown Voltage
Tolerance
(Note 7)
Minimum Operating Current
Conditions
I
R
= 100µA
45
I
R
= 100µA
Typical
(Note 5)
1.225
±12
±24
65
70
±150
LM4041DIM3
Limits
(Note 6)
Units
(Limit)
V
mV (max)
mV (max)
µA
µA (max)
µA (max)
ppm/°C
ppm/°C (max)
ppm/°C (max)
mV
mV (max)
mV (max)
mV
mV (max)
mV (max)
Ω
Ω (max)
µV
RMS
ppm
LM4041-1.2 Electrical Characteristics
(Note 4)
I
RMIN
ΔV
R
/ΔT
ΔV
R
/ΔI
R
Average Reverse Breakdown
Voltage Temperature
Coefficient
Reverse Breakdown Voltage
Change with Operating
Current Change
I
RMIN
≤ I
R
1mA
1mA ≤ I
R
15mA
I
R
= 10mA
I
R
= 1mA
I
R
= 100µA
±20
±15
±15
0.7
2.0
2.5
8.0
10.0
2.0
2.5
Z
R
e
N
ΔV
R
Reverse Dynamic Impedance
Wideband Noise
Reverse Breakdown Voltage
Long Term Stability
I
R
= 100µA
10Hz ≤ f ≤ 10kHz
t = 1000hrs
T = 25°C ±0.1°C
I
R
= 100µA
I
R
= 1mA, f = 120Hz
I
AC
= 0.1 I
R
0.5
20
120
Note 4.
Note 5.
Note 6.
Note 7.
Specification for packaged product only.
Typicals are at T
J
= 25°C and represent most likely parametric norm.
Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation using Statistical Quality Control (SQL)
methods.
The boldface (over temperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Volt-
age Tolerance ±[(ΔV
R
/ΔT)(65°C)(V
R
)]. ΔV
R
/ΔT is the V
R
temperature 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 over temperature tolerance for the different grades follows:
C-grade: ±1.15% = ±0.5% ±100ppm/°C
×
65°C
D-grade: ±1.98% = ±1.0% ±150ppm/°C
×
65°C
Example: The C-grade LM4040-2.5 has an over temperature Reverse Breakdown Voltage tolerance of ±2.5
×
1.15% = ±29mV.
March 2005
9
M9999-031805
MICREL [ MICREL SEMICONDUCTOR ]
