MicropowerVoltageReferenceDiode
General Description
TheLM385-2.5aremicropower
2-terminal band-gap voltage regulator diodes. Operating
over a 20 µAto20mAcurrent range, they feature exceptionally low dynamic impedance and good temperature stability.
On-chip trimming is used to provide tight voltage tolerance.
Features
±
n
20mV(±0.8%)max.initialtolerance(Agrade)
nOperatingcurrentof20µAto20mA
n0.6Ωdynamicimpedance(Agrade)
nLowtemperaturecoefficient
nLowvoltagereference—2.5V
Connection Diagrams
TO-92
Plastic Package
AbsoluteMaximumRatings
Soldering Information
TO-92 Package (10 sec.) 260˚C
Reverse Current 30 mA
Forward Current 10 mA
Operating Temperature Range (Note 3)
LM385-2.5 0˚C to 70˚C
Storage Temperature −55˚C to + 150˚C
Electrical Characteristics
(Note 4)
LM385-2.5
Parameter Conditions Typ
ReverseBreakdown
Voltage
2.500
MinimumOperating
Current (Max)
ReverseBreakdown
VoltageChangewith(Max)
Current 1 mA ≤ I
Reverse Dynamic I
Impedancef=20Hz
Wideband Noise (rms) I
Long Term Stability I
Average Temperature I
R
R
10 Hz ≤ f ≤ 10 kHz
R
T=1000 Hr, 20 ppm
T
A
MIN
≤1mA
≤I
R
≤20mA
R
=
100 µA 120 µV
=
100 µA,
=
±
0.1˚C
25˚C
≤ IR≤ 20 mA
Tested Design
Limit Limit
150
Units
(Limits)
(Max)
ppm/˚C
(Max)
Ω