LM4040-N, LM4040Q-N
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SNOS633H –OCTOBER 2000–REVISED APRIL 2013
3.0-V LM4040-N Electrical Characteristics
VR Tolerance Grades 'A' and 'B'; Temperature Grade 'I'
Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25°C. The grades A and B designate initial
Reverse Breakdown Voltage tolerances of ±0.1% and ±0.2%, respectively.
LM4040AIM3
LM4040AIZ
—
LM4040BIM3
LM4040BIZ
LM4040BIM7
Limits(2)
Symbol
VR
Parameter
Conditions
Typical(1)
Units
Limits(2)
Reverse Breakdown Voltage
IR = 100 μA
3.000
V
mV (max)
mV (max)
μA
±3.0
±6.0
Reverse Breakdown Voltage
Tolerance(3)
IR = 100 μA
±22
±26
47
IRMIN
Minimum Operating Current
62
62
μA (max)
μA (max)
ppm/°C
ppm/°C (max)
ppm/°C
mV
67
67
IR = 10 mA
IR = 1 mA
±20
±15
±15
0.6
Average Reverse Breakdown
ΔVR/ΔT Voltage Temperature
±100
±100
Coefficient(3)
IR = 100 μA
IRMIN ≤ IR ≤ 1 mA
0.8
0.8
mV (max)
mV (max)
mV
Reverse Breakdown Voltage
1.1
1.1
ΔVR/ΔIR Change with Operating
Current Change(4)
2.7
1 mA ≤ IR ≤ 15 mA
6.0
6.0
mV (max)
mV (max)
Ω
9.0
9.0
0.4
35
IR = 1 mA, f = 120 Hz,
IAC = 0.1 IR
ZR
eN
Reverse Dynamic Impedance
Wideband Noise
0.9
0.9
Ω (max)
IR = 100 μA
10 Hz ≤ f ≤ 10 kHz
μVrms
t = 1000 hrs
T = 25°C ±0.1°C
IR = 100 μA
Reverse Breakdown Voltage
Long Term Stability
ΔVR
120
ppm
%
VHYST
Thermal Hysteresis(5)
ΔT = −40°C to +125°C
0.08
(1) Typicals are at TJ = 25°C and represent most likely parametric norm.
(2) Limits are 100% production tested at 25°C. Limits over temperature are ensured through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate AOQL.
(3) The boldface (over-temperature) limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse
Breakdown Voltage Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VR temperature coefficient, maxΔT is the maximum
difference in temperature from the reference point of 25°C to T MIN or TMAX, and VR is the reverse breakdown voltage. The total over-
temperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
E-grade: ±2.98% = ±2.0% ±150 ppm/°C × 65°C
The total over-temperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown
below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
E-grade: ±3.5% = ±2.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040-N has an over-temperature Reverse Breakdown Voltage tolerance of ±2.5V ×
0.75% = ±19 mV.
(4) Load regulation is measured on pulse basis from no load to the specified load current. Output changes due to die temperature change
must be taken into account separately.
(5) Thermal hysteresis is defined as the difference in voltage measured at +25°C after cycling to temperature -40°C and the 25°C
measurement after cycling to temperature +125°C.
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