ꢀ ꢁꢂ ꢃ ꢄ ꢅꢂ ꢆ ꢄꢇ ꢀ ꢁꢈ ꢃ ꢄ ꢅꢂ ꢆ ꢄꢇ ꢀ ꢁ ꢈꢃ ꢄꢉ ꢅꢂ ꢆꢄ
ꢁ ꢊꢋꢌꢍ ꢎ ꢍꢏ ꢐꢌ ꢑꢍ ꢀꢒꢓꢔ ꢐ ꢌꢐ ꢕꢐ ꢌꢐ ꢖ ꢋꢐ ꢗ
SLVS023I − JANUARY 1989 − REVISED FEBRUARY 2005
LM285-2.5 . . . D PACKAGE
LM385-2.5, LM385B-2.5 . . . D OR PW PACKAGE
(TOP VIEW)
D
Operating Current Range . . . 20 µA to
20 mA
D
1.5% and 3% Initial Voltage Tolerance
NC
NC
NC
CATHODE
NC
NC
1
2
3
4
8
7
6
5
D
Reference Impedance
− LM385 . . . 1 Ω Max at 25°C
− All Devices . . . 1.5 Ω Max Over Full
Temperature Range
ANODE
NC
D
D
Very Low Power Consumption
NC − No internal connection
Applications
LM285-2.5, LM385-2.5, LM385B-2.5 . . . LP PACKAGE
(TOP VIEW)
− Portable Meter References
− Portable Test Instruments
− Battery-Operated Systems
− Current-Loop Instrumentation
− Panel Meters
ANODE
CATHODE
NC
D
Interchangeable With Industry-Standard
LM285-2.5 and LM385-2.5
NC − No internal connection
description/ordering information
These micropower two-terminal band-gap voltage references operate over a 20-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-2-5
SOIC (D)
385-25
Reel of 2000
Tube of 1000
Reel of 2000
Tube of 150
Reel of 2000
Tube of 75
LM385DR-2-5
LM385LP-2-5
LM385LPR-2-5
LM385PW-2-5
LM385PWR-2-5
LM385BD-2-5
LM385BDR-2-5
LM385BLP-2-5
LM385BLPR-2-5
LM385BPW-2-5
LM385BPWR-2-5
LM285D-2-5
3%
TO226/TO-92 (LP)
TSSOP (PW)
SOIC (D)
385-25
385-25
385B25
385-25
385B25
285-25
0°C to 70°C
Reel of 2000
Tube of 1000
Reel of 2000
Tube of 150
Reel of 2000
Tube of 75
1.5%
1.5%
TO226/TO-92 (LP)
TSSOP (PW)
SOIC (D)
Reel of 2000
Tube of 1000
Reel of 2000
LM285DR-2-5
LM285LP-2-5
LM285LPR-2-5
−40°C to 85°C
285-25
285-25
TO226/TO-92 (LP)
†
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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