6.19 Electrical Characteristics: 8.2-V LM4040-N VR Tolerance Grades 'A' And 'B'; Temperature Grade 'I'
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.
PARAMETER |
TEST CONDITIONS |
MIN(2) |
TYP(1) |
MAX(2) |
UNIT |
VR |
Reverse Breakdown Voltage |
IR = 150 μA |
|
|
8.192 |
|
V |
Reverse Breakdown Voltage Tolerance(3) |
IR = 150 μA |
LM4040AIM3
LM4040AIZ |
TA = TJ = 25°C |
|
|
±8.2 |
mV |
TA = TJ = TMIN to TMAX |
|
|
±61 |
LM4040BIM3
LM4040BIZ |
TA = TJ = 25°C |
|
|
±16 |
TA = TJ = TMIN to TMAX |
|
|
±70 |
IRMIN |
Minimum Operating Current |
|
TA = TJ = 25°C |
|
67 |
91 |
μA |
TA = TJ = TMIN to TMAX |
|
|
95 |
ΔVR/ΔT |
Average Reverse Breakdown Voltage Temperature Coefficient(3) |
IR = 10 mA |
|
|
±40 |
|
ppm/°C |
IR = 1 mA |
TA = TJ = 25°C |
|
±20 |
|
TA = TJ = TMIN to TMAX |
|
|
±100 |
IR = 150 μA |
|
|
±20 |
|
ΔVR/ΔIR |
Reverse Breakdown Voltage Change with Operating Current Change(4) |
IRMIN ≤ IR ≤ 1 mA |
TA = TJ = 25°C |
|
0.6 |
1.3 |
mV |
TA = TJ = TMIN to TMAX |
|
|
2.5 |
1 mA ≤ IR ≤ 15 mA |
TA = TJ = 25°C |
|
7 |
10 |
TA = TJ = TMIN to TMAX |
|
|
18 |
ZR |
Reverse Dynamic Impedance |
IR = 1 mA, f = 120 Hz,
IAC = 0.1 IR |
|
|
0.6 |
1.5 |
Ω |
eN |
Wideband Noise |
IR = 150 μA
10 Hz ≤ f ≤ 10 kHz |
|
|
130 |
|
μVrms |
ΔVR |
Reverse Breakdown Voltage Long Term Stability |
t = 1000 hrs
T = 25°C ±0.1°C
IR = 150 μA |
|
|
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 (overtemperature) 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 overtemperature 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 overtemperature 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 overtemperature 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.