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LM285-1.2-N

ACTIVE

1.235-V, –40°C to +85°C, micropower voltage reference diode

Product details

VO (V) 1.2 Initial accuracy (max) (%) 1 VO adj (min) (V) 1.2 VO adj (max) (V) 1.2 Iz for regulation (min) (µA) 10 Reference voltage (V) Fixed Rating Catalog Temp coeff (max) (ppm/°C) 150 Operating temperature range (°C) -40 to 85 Iout/Iz (max) (mA) 20
VO (V) 1.2 Initial accuracy (max) (%) 1 VO adj (min) (V) 1.2 VO adj (max) (V) 1.2 Iz for regulation (min) (µA) 10 Reference voltage (V) Fixed Rating Catalog Temp coeff (max) (ppm/°C) 150 Operating temperature range (°C) -40 to 85 Iout/Iz (max) (mA) 20
SOIC (D) 8 29.4 mm² 4.9 x 6 TO-92 (LP) 3 19.136 mm² 5.2 x 3.68
  • ±1% and 2% Initial Tolerance
  • Operating Current of 10μA to 20mA
  • 1Ω Dynamic Impedance
  • Low Temperature Coefficient
  • Low Voltage Reference—1.235V
  • 2.5V Device and Adjustable Device Also Available
  • LM185-2.5 Series and LM185 Series, respectively

All trademarks are the property of their respective owners.

  • ±1% and 2% Initial Tolerance
  • Operating Current of 10μA to 20mA
  • 1Ω Dynamic Impedance
  • Low Temperature Coefficient
  • Low Voltage Reference—1.235V
  • 2.5V Device and Adjustable Device Also Available
  • LM185-2.5 Series and LM185 Series, respectively

All trademarks are the property of their respective owners.

The LM185-1.2-N/LM285-1.2-N/LM385-1.2-N are micropower 2-terminal band-gap voltage regulator diodes. Operating over a 10μA to 20mA current range, they feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to provide tight voltage tolerance. Since the LM185-1.2-N band-gap reference uses only transistors and resistors, low noise and good long term stability result.

Careful design of the LM185-1.2-N has made the device exceptionally 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 LM185-1.2-N 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.

The LM185-1.2-N is rated for operation over a −55°C to 125°C temperature range while the LM285-1.2-N is rated −40°C to 85°C and the LM385-1.2-N 0°C to 70°C. The LM185-1.2-N/LM285-1.2-N are available in a hermetic TO package and the LM285-1.2-N/LM385-1.2-N are also available in a low-cost TO-92 molded package, as well as SOIC and SOT-23.

The LM185-1.2-N/LM285-1.2-N/LM385-1.2-N are micropower 2-terminal band-gap voltage regulator diodes. Operating over a 10μA to 20mA current range, they feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to provide tight voltage tolerance. Since the LM185-1.2-N band-gap reference uses only transistors and resistors, low noise and good long term stability result.

Careful design of the LM185-1.2-N has made the device exceptionally 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 LM185-1.2-N 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.

The LM185-1.2-N is rated for operation over a −55°C to 125°C temperature range while the LM285-1.2-N is rated −40°C to 85°C and the LM385-1.2-N 0°C to 70°C. The LM185-1.2-N/LM285-1.2-N are available in a hermetic TO package and the LM285-1.2-N/LM385-1.2-N are also available in a low-cost TO-92 molded package, as well as SOIC and SOT-23.

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Technical documentation

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Type Title Date
* Data sheet LM185-1.2/LM285-1.2/LM385-1.2 Micropower Voltage Reference Diode datasheet (Rev. E) 05 Apr 2013
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Application note TO-92 Packing Options / Ordering Instructions (Rev. A) 23 Jun 2010

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Calculation tool

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Supported products & hardware

Supported products & hardware

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SOIC (D) 8 Ultra Librarian
TO-92 (LP) 3 Ultra Librarian

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