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LM185-2.5-N, LM285-2.5-N, LM385-2.5-N
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SNVS743D –DECEMBER 1999–REVISED MARCH 2013
LM185-2.5-N/LM285-2.5-N/LM385-2.5-N Micropower Voltage Reference Diode
Check for Samples: LM185-2.5-N, LM285-2.5-N, LM385-2.5-N
Careful design of the LM185-2.5-N has made the
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FEATURES
device exceptionally tolerant of capacitive loading,
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• ±20 mV (±0.8%) max. Initial Tolerance (A
making it easy to use in almost any reference
Grade)
application. The wide dynamic operating range allows
• Operating Current of 20 μA to 20 mA
its use with widely varying supplies with excellent
regulation.
• 0.6Ω Dynamic Impedance (A Grade)
The extremely low power drain of the LM185-2.5-N
• Low Temperature Coefficient
makes it useful for micropower circuitry. This voltage
• Low Voltage Reference—2.5V
reference can be used to make portable meters,
• 1.2V Device and Adjustable Device Also
regulators or general purpose analog circuitry with
Available—LM185-1.2 Series and LM185
battery life approaching shelf life. Further, the wide
Series, respectively
operating current allows it to replace older references
with a tighter tolerance part. For applications requiring
1.2V see LM185-1.2.
DESCRIPTION
The LM185-2.5-N/LM285-2.5-N/LM385-2.5-N are
The LM185-2.5-N is rated for operation over a −55°C
micropower 2-terminal band-gap voltage regulator
to 125°C temperature range while the LM285-2.5-N is
diodes. Operating over a 20 μA to 20 mA current
rated −40°C to 85°C and the LM385-2.5-N 0°C to
range, they feature exceptionally low dynamic
70°C. The LM185-2.5-N/LM285-2.5-N are available in
impedance and good temperature stability. On-chip
a hermetic TO package and the LM285-2.5-N/LM385-
trimming is used to provide tight voltage tolerance.
2.5-N are also available in a low-cost TO-92 molded
Since the LM-185-2.5-N band-gap reference uses
package, as well as SOIC and SOT-23. The LM185-
only transistors and resistors, low noise and good
2.5-N is also available in a hermetic leadless chip
long term stability result.
carrier package.
Connection Diagram
Figure 1. TO-92 Package Figure 2. SOIC Package
(Bottom View) See Package Number D0008A
See Package Number LP0003A
* Pin 3 is attached to the Die Attach Pad (DAP) and should be connected to Pin 2 or left floating.
Figure 3. SOT-23
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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.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 1999–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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