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ꢁ ꢋꢌꢍꢎ ꢏ ꢎꢐ ꢑꢍ ꢒꢎ ꢀꢓꢔꢕ ꢑ ꢍꢑ ꢖꢑ ꢍꢑ ꢗ ꢌꢑ ꢘ
SLVS075H − APRIL 1989 − REVISED FEBRUARY 2005
LM285-1.2 . . . D PACKAGE
D
Operating Current Range
LM385-1.2 . . . D, PS, OR PW PACKAGE
LM385B-1.2 . . . D OR PW PACKAGE
(TOP VIEW)
− LM285 . . . 10 µA to 20 mA
− LM385 . . . 15 µA to 20 mA
− LM385B . . . 15 µA to 20 mA
NC
NC
NC
CATHODE
NC
NC
1
2
3
4
8
7
6
5
D
D
1% and 2% Initial Voltage Tolerance
Reference Impedance
− LM385 . . . 1 Ω Max at 25°C
− All Devices . . . 1.5 Ω Max Over Full
Temperature Range
ANODE
NC
NC − No internal connection
D
D
Very Low Power Consumption
LM285-1.2, LM385-1.2, LM385B-1.2 . . . LP PACKAGE
(TOP VIEW)
Applications
− Portable Meter References
− Portable Test Instruments
− Battery-Operated Systems
− Current-Loop Instrumentation
− Panel Meters
ANODE
CATHODE
NC
D
Interchangeable With Industry Standard
LM285-1.2 and LM385-1.2
NC − No internal connection
description/ordering information
These micropower, two-terminal, band-gap voltage references operate over a 10-µA to 20-mA current range
and feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming provides
tight voltage tolerance. The band-gap reference for these devices has low noise and long-term stability.
ORDERING INFORMATION
V
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
Z
†
T
A
PACKAGE
TOLERANCE
Tube of 75
LM385D-1-2
SOIC (D)
SOP (PS)
385-12
Reel of 2000
Reel of 2000
Tube of 1000
Reel of 2000
Tube of 150
Reel of 2000
Tube of 75
LM385DR-1-2
LM385PSR-1-2
LM385LP-1-2
LM385LPR-1-2
LM385PW-1-2
LM385PWR-1-2
LM385BD-1-2
LM385BDR-1-2
LM385BLP-1-2
LM385BLPR-1-2
LM385BPW-1-2
LM385BPWR-1-2
LM285D-1-2
L385-12
2%
TO-226 / TO-92 (LP)
TSSOP (PW)
SOIC (D)
385-12
385-12
385B12
385-12
385B12
0°C to 70°C
Reel of 2000
Tube of 1000
Reel of 2000
Tube of 150
Reel of 2000
Tube of 75
1%
1%
TO-226 / TO-92 (LP)
TSSOP (PW)
SOIC (D)
285-12
285-12
−40°C to 85°C
Reel of 2000
LM285DR-1-2
LM285LP-1-2
TO-226 / TO-92 (LP) Tube of 1000
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available
at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright 2005, Texas Instruments Incorporated
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1
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