If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 2)
Reverse Current
Forward Current
Operating Temperature Range (Note 3)
LM185 Series
LM285 Series
LM385 Series
30mA
10mA
−55°C to 125°C
−40°C to 85°C
0°C to 70°C
(Note 4)
LM185, LM285
LM185BX,
LM185BY
LM185B,
LM285BX,
LM285BY
ESD Susceptibility (Note 8)
2kV
Storage Temperature
−55°C to 150°C
Soldering Information
TO-92 Package (10 sec.)
260°C
TO-46 Package (10 sec.)
300°C
SO Package
Vapor Phase (60 sec.)
215°C
Infrared (15 sec.)
220°C
See An-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
Electrical Characteristics
LM385
LM385BX,
LM285
Typ
Tested Design Tested Design
Limit
Limit
Limit
Limit
(Note (Note (Note (Note
5)
6)
5)
6)
1.240
1.252
1.255
1.265
1.270
V
(max)
V
(min)
mV
(max)
LM385BY
LM385
Units
(Limit)
Parameter
Conditions
Typ
Tested Design Tested Design
Limit
Limit
Limit
Limit
(Note (Note (Note (Note
5)
6)
5)
6)
Reference
Voltage
I
R
= 100μA
1.240
1.252
1.255
1.228
1.215
Reference
Voltage
Change with
Current
Dynamic
Output
Impedance
I
MIN
< I
R
< 1mA
1mA < I
R
< 20mA
I
R
= 100μA,
I
AC
= 0.1 I
R
f=
100Hz
V
OUT
=
V
REF
V
OUT
=
5.3V
Reference
Voltage
Change with
Output
Voltage
Feedback
Current
Minimum
Operating
Current (see
curve)
Output
Wideband
Noise
V
OUT
= V
REF
V
OUT
= 5.3V
I
R
= 100μA,
10Hz < f <
10kHz
V
OUT
= V
REF
V
OUT
= 5.3V
I
R
= 100μA
1
3
6
3
6
2
0.2
4
1
10
1.5
20
1.265
1.270
1.215
1
10
1.205
1.5
20
0.2
5
1.228
1
15
1.215
1.5
25
1.215
1
15
1.205
1.5
25
0.3
0.7
0.4
1
Ω
mV
5
10
5
10
(max)
13
6
30
20
9
45
25
10
50
20
9
45
25
10
50
16
7
35
30
11
55
35
13
60
30
11
55
35
13
60
nA
(max)
μA
(max)
50
170
50
170
μV
rms
3
www.national.com
LM185/LM285/LM385
LM185, LM285
LM185BX,
LM185BY
LM185B,
LM285BX,
LM285BY
LM385
LM385BX,
LM285
Typ
Tested Design Tested Design
Limit
Limit
Limit
Limit
(Note (Note (Note (Note
5)
6)
5)
6)
30
50
ppm/°
c
(max)
150
20
150
ppm
LM385BY
LM385
Units
(Limit)
Parameter
Conditions
Typ
Tested Design Tested Design
Limit
Limit
Limit
Limit
(Note (Note (Note (Note
5)
6)
5)
6)
Average
Temperature
Coefficient
(Note 7)
I
R
= 100μA
X Suffix
Y Suffix
All
Others
Long Term
Stability
I
R
= 100μA,
T = 1000
Hr,
T
A
= 25°C ± 0.1°C
20
30
50
150
150
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
The guaranteed specifications apply only for the test conditions listed.
Note 2:
Refer to RETS185H for military specifications.
Note 3:
For elevated temperature operation, T
J
max is:
LM185
LM285
LM385
Thermal Resistance
θ
JA
(Junction to Ambient)
θ
JC
(Junction to Case)
150°C
125°C
100°C
TO-92
180°C/W (0.4″ leads)
170°C/W (0.125″ leads)
N/A
80°C/W
N/A
TO-46
440°C/W
SO-8
165°C/W
Note 4:
Parameters identified with
boldface type
apply at temperature extremes. All other numbers apply at T
A
= T
J
= 25°C. Unless otherwise specified, all
parameters apply for V
REF
< V
OUT
< 5.3V.
Note 5:
Guaranteed and 100% production tested.
Note 6:
Guaranteed, but not 100% production tested. These limits are not to be used to calculate average outgoing quality levels.
Note 7:
The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures from T
MIN
to T
MAX
, divided
by T
MAX
− T
MIN
. The measured temperatures are −55, −40, 0, 25, 70, 85, 125°C.
Note 8:
The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.
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