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
1FEATURES device exceptionally tolerant of capacitive loading,
2• ±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.
• 0.6ΩDynamic 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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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.