LM185-2.5-N, LM285-2.5-N, LM385-2.5-N
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SNVS743D –DECEMBER 1999–REVISED MARCH 2013
ELECTRICAL CHARACTERISTICS
LM385A-2.5-N
LM385AX-2.5-N
Units
(Limits)
Parameter
Conditions
Typ
LM385AY-2.5-N
Tested Limit(2) Design Limit(3)
Reverse Breakdown
Voltage
IR = 100 μA
2.500
2.500
12
2.480
2.520
2.470
2.530
V(Min)
V(Max)
V(Min)
V(Max)
μA
Minimum Operating
Current
18
20
1.5
20
(Max)
mV
Reverse Breakdown
Voltage Change with
Current
IMIN ≤ IR ≤ 1mA
1
(Max)
mV
1 mA ≤ IR ≤ 20 mA
10
(Max)
Ω
Reverse Dynamic
Impedance
IR = 100 μA,
0.2
120
20
0.6
f = 20 Hz
1.5
Wideband Noise (rms)
IR = 100 μA
μV
10 Hz ≤ f ≤ 10 kHz
IR = 100 μA, T = 1000 Hr,
TA = 25°C ±0.1°C
Long Term Stability
ppm
Average Temperature Coefficient(4)
IMIN ≤ IR ≤ 20 mA
X Suffix
Y Suffix
All Others
30
50
ppm/°C
(Max)
150
(1) Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25°C.
(2) Specified and 100% production tested.
(3) Specified, but not 100% production tested. These limits are not used to calculate average outgoing quality levels.
(4) The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures between
the operating TMAX and TMIN, divided by TMAX–TMIN. The measured temperatures are −55°C, −40°C, 0°C, 25°C, 70°C, 85°C, 125°C.
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