NSC LM185B

MICROCIRCUIT DATA SHEET
Original Creation Date: 08/15/95
Last Update Date: 02/25/03
Last Major Revision Date: 08/15/95
MNLM185B-X REV 0B0
ADJUSTABLE MICROPOWER VOLTAGE REFERENCE
General Description
The LM185B is a micropower 3-terminal adjustable band-gap voltage reference diode.
Operating from 1.24 to 5.3V and over a 10 uA to 20 mA current range, it features
exceptionally low dynamic impedance and good temperature stability. On-chip trimming is
used to provide tight voltage tolerance. Since the LM185B band-gap reference uses only
transistors and resistors, low noise and good long-term stability result.
Careful design of the LM185B has made the device tolerant of capacitive loading, making it
easy to use in almost any reference application. The wide dynamic operating range allows
its use with widely varying supplies with excellent regulation.
The extremely low power drain of the LM185B makes it useful for micropower circuitry. This
voltage reference can be used to make portable meters, regulators or general purpose
analog circuitry with battery life approaching shelf life. Further, the wide operating
current allows it to replace older references with a tighter tolerance part.
Industry Part Number
NS Part Numbers
LM185B
LM185BE/883
LM185BH/883
Prime Die
LM185
Processing
Subgrp Description
MIL-STD-883, Method 5004
1
2
3
4
5
6
7
8A
8B
9
10
11
Quality Conformance Inspection
MIL-STD-883, Method 5005
1
Static tests at
Static tests at
Static tests at
Dynamic tests at
Dynamic tests at
Dynamic tests at
Functional tests at
Functional tests at
Functional tests at
Switching tests at
Switching tests at
Switching tests at
Temp ( oC)
+25
+125
-55
+25
+125
-55
+25
+125
-55
+25
+125
-55
MICROCIRCUIT DATA SHEET
MNLM185B-X REV 0B0
Features
-
Adjustable from 1.24V to 5.30V.
Operating current of 10 uA to 20 mA.
1% and 2% initial tolerance.
1 Ohm dynamic impedance.
Low temperature coefficient.
2
MICROCIRCUIT DATA SHEET
MNLM185B-X REV 0B0
(Absolute Maximum Ratings)
(Note 1)
Reverse Current
30mA
Forward Current
10mA
Operating Temperature Range
-55 C to +125 C
Maximum Junction Temperature
150 C
Storage Temperature
-55 C to +150 C
Lead Temperature
(Soldering, 10 seconds)
Thermal Resistance
ThetaJA
E-Pkg (Still Air)
E-Pkg (500LF/Min Air flow)
H-Pkg (Still Air)
H-Pkg (500LF/Min Air flow)
300 C
100
73
300
139
ThetaJC
E-Pkg
H-Pkg
Package Weight
(Typical)
E-Pkg
H-Pkg
ESD Tolerance
(Note 2)
C/W
C/W
C/W
C/W
25 C/W
57 C/W
TBD
TBD
500V
Note 1:
Note 2:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Operating Ratings indicate conditions for which the device is 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. Some performance characteristics may degrade
when the device is not operated under the listed test conditions.
Human body model, 1.5k Ohms in series with 100pF
3
MICROCIRCUIT DATA SHEET
MNLM185B-X REV 0B0
Electrical Characteristics
DC PARAMETERS
SYMBOL
Vref
PARAMETER
Reference Voltage
CONDITIONS
NOTES
MAX
1.228
1.252
V
1
1.215
1.255
V
2, 3
Ir = 9uA
1.228
1.252
V
1
Ir = 10uA
1.215
1.255
V
2, 3
Ir = 1mA
1.228
1.252
V
1
1.215
1.255
V
2, 3
1.228
1.252
V
1
1.215
1.255
V
2, 3
1.228
1.252
V
1
1.215
1.255
V
2, 3
Vr = 5.3V, Ir = 45uA
1.288
1.252
V
1
Vr = 5.3V, Ir = 50uA
1.215
1.255
V
2, 3
Vr = 5.3V, Ir = 1.0mA
1.288
1.252
V
1
1.215
1.255
V
2, 3
1.288
1.252
V
1
1.215
1.255
V
2, 3
9uA < Ir < 1mA
1
mV
1
10uA < Ir < 1mA
1.5
mV
2, 3
1mA < Ir < 20mA
10
mV
1
20
mV
2, 3
Vr = 5.3V, 45uA < Ir < 1mA
1
mV
1
Vr = 5.3V, 50uA < Ir < 1mA
1.5
mV
2, 3
Vr = 5.3V, 1mA < Ir < 20mA
10
mV
1
20
mV
2, 3
3
mV
1
6
mV
2, 3
Ir = 100uA
Vr = 5.3V, Ir = 100uA
Vr = 5.3V, Ir = 20mA
Delta
Vref/Delta
Vo
Reference Voltage
Change with
Current
Reference Voltage
Change with
Output Voltage
Vr = 5.3V, Ir = 100uA
4
UNIT
SUBGROUPS
MIN
Ir = 20mA
Delta
Vref/Delta
Ir
PINNAME
MICROCIRCUIT DATA SHEET
MNLM185B-X REV 0B0
Electrical Characteristics
DC PARAMETERS(Continued)
SYMBOL
If
Ic
PARAMETER
Feedback Current
Minimum Operating
Current
CONDITIONS
NOTES
MIN
MAX
UNIT
SUBGROUPS
Ir = 9uA
20
nA
1
Ir = 10uA
25
nA
2, 3
Ir = 20mA
20
nA
1
25
nA
2, 3
Vr = 5.3V, Ir = 45uA
20
nA
1
Vr = 5.3V, Ir = 50uA
25
nA
2, 3
Vr = 5.3V, Ir = 20mA
20
nA
1
25
nA
2, 3
Vr = Vref
Vr = 5.3V
Note 1:
PINNAME
Functional Test.
5
1
9
uA
1
1
10
uA
2, 3
1
45
uA
1
1
50
uA
2, 3
MICROCIRCUIT DATA SHEET
MNLM185B-X REV 0B0
Graphics and Diagrams
GRAPHICS#
DESCRIPTION
05886HRB2
METAL CAN (H), TO-39, 3LD, .200 DIA P.C. (B/I CKT)
06175HRB2
LCC (E), TYPE C, 20 TERMINAL (B/I CKT)
E20ARE
LCC (E), TYPE C, 20 TERMINAL(P/P DWG)
H02ARE
METAL CAN, TO-46,2LD, .100 DIA P.C. (P/P DWG)
P000188A
METAL CAN (H), TO-39, 3LD, .200 DIA P.C. (PIN OUT)
P000366B
LCC (E), 20 LEAD (PINOUT)
See attached graphics following this page.
6
N
N/C
N/C
GND-
N/C
N/C
3
2
1
20
19
18
N/C
5
17
N/C
ADJ
6
16
N/C
N/C
7
15
N/C
N/C
8
14
N/C
N/C
4
N/C
9
N/C
10
11
12
N/C VREF+ N/C
13
N/C
LM185E
20 - LEAD LCC
CONNECTION DIAGRAM
TOP VIEW
P000366B
N
MIL/AEROSPACE OPERATIONS
2900 SEMICONDUCTOR DRIVE
SANTA CLARA, CA 95050
MICROCIRCUIT DATA SHEET
MNLM185B-X REV 0B0
Revision History
Rev
ECN #
Originator
Changes
0A0
M0003059 02/25/03
Rel Date
Rose Malone
Archive RETS185BX, Rev. 0A. Update MDS: MNLM185B-X,
Rev. 0AL to MNLM185B-X, Rev. 0A0, Fully Released MDS.
Updated Discription, Features and Absolute section.
Verified NSID.
0B0
M0004116 02/25/03
Rose Malone
Update MDS: MCLM185B-X, Rev. 0A0 to MCLM185B-X, Rev.
0B0. Added ESD Level to Absolute Maximum Ratings
Section.
7