LM4050-N
,
LM4050-N-Q1
SNOS455G –MAY 2000–REVISED SEPTEMBER 2015
www.ti.com
6.6 Electrical Characteristics: 2.5-V Option
All other limits TA= TJ= 25°C. The grades A, B and C designate initial Reverse Breakdown Voltage tolerances of ±0.1%,
±0.2%, and 0.5% respectively.
PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT
IR= 100 μA 2.500 V
LM4050AIM3, LM4050AEM3 ±2.5
Reverse breakdown voltage IR= 100 μA LM4050BIM3, LM4050BEM3 ±5 mV
LM4050CIM3, LM4050CEM3 ±13
LM4050AIM3, LM4050AEM3 ±11
VRIndustrial temperature range, LM4050BIM3, LM4050BEM3 ±24
TA= TJ= TMIN to TMAX LM4050CIM3, LM4050CEM3 ±21
Reverse breakdown voltage mV
tolerance(3) LM4050AIM3, LM4050AEM3 ±15
Extended temperature range, LM4050BIM3, LM4050BEM3 ±18
TA= TJ= TMIN to TMAX LM4050CIM3, LM4050CEM3 ±25
TA= TJ= 25°C 41 60
IRMIN Minimum operating current μA
TA= TJ= TMIN to TMAX 65
IR= 10 mA ±20
IR= 1 mA ±15
Average reverse breakdown
ΔVR/ΔT ppm/°C
voltage temperature coefficient(3) IR= 100 μA, TA= TJ= 25°C ±15
IR= 100 μA, TA= TJ= TMIN to TMAX ±50
IRMIN ≤IR≤1 mA, TA= TJ= 25°C 0.3 0.8
Reverse breakdown voltage
ΔVR/ΔIRchange with operating current mV
IRMIN ≤IR≤1 mA 1.2
change(4) TA= TJ= TMIN to TMAX
1 mA ≤IR≤15 mA, TA= TJ= 25°C 2.3 6
Reverse breakdown voltage
ΔVR/ΔIRchange with operating current mV
1 mA ≤IR≤15 mA, 8
change(4) TA= TJ= TMIN to TMAX
ZRReverse dynamic impedance IR= 1 mA, f = 120 Hz, IAC = 0.1 IR0.3 Ω
eNWideband noise IR= 100 μA, 10 Hz ≤f≤10 kHz 41 μVrms
Reverse breakdown voltage long
ΔVRt = 1000 hrs, T = 25°C ±0.1°C, IR= 100 μA 120 ppm
term stability
VHYST Thermal hysteresis (5) ΔT = −40°C to 125°C 07 mV
(1) 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.
(2) Typicals are at TJ= 25°C and represent most likely parametric norm.
(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 VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T MIN or TMAX, and VRis 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: ±0.425% = ±0.1% ±50 ppm/°C ×
65°C B-grade: ±0.525% = ±0.2% ±50 ppm/°C × 65°C C-grade: ±0.825% = ±0.5% ±50 ppm/°C × 65°C. Therefore, as an
example, the A-grade LM4050-N-2.5 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5V × 0.425% = ±11 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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