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MFG:NS  Package Cooled:SMD  D/C:37  

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Part Number: LM385B

 

MFG: NS

Package Cooled: SMD

D/C: 37

Description: The LM385/385B Micropower Voltage References are two terminal bandgap reference diodes designed and ...


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LM385B General Description


The LM385/385B Micropower Voltage References are two terminal bandgap reference diodes designed and optimized for accurate low power operation in portable and other power sensitive systems. Operating currents are guaranteed from as low as 15A up to 20mA for the LM385/385B-1.2, and 20A up to 20mA for the LM385/385B-2.5, giving designers a great deal of flexibility in optimizing power consumption, noise and ultimate application performance. As an added feature, the references output impedance is extraordinarily low over the entire operating range of quiescent currents. This enables an extremely wide dynamic load range with little effect on the overall reference accuracy.


The LM385 family is available in fixed 1.2V and 2.5V reference values.  Process and circuit design optimization provide for high accuracy with initial tolerance values of 1% for the LM385B-1.2, 2% for the LM385-1.2, 1.5% for the LM385B-2.5, and 3% for the LM385-2.5.Complementing their initial accuracy, the bandgap reference is temperature compensated to deliver 20ppm performance over the 0° to 70°C operating temperature range.


The LM385 family from Linfinity is a pin-for-pin replacement for the LM385/385B family of voltage references.

LM385B Maximum Ratings

Reverse Breakdown Current .................................................................................... 30mA
Forward Current ....................................................................................................... 10mA
Operating Temperature Range
LM385........................................................................................................... 0°C to 70°C
Storage Temperature Range ................................................................... -65°C to 150°C
Lead Temperature (soldering, 10 seconds) ..............................................................300°C

LM385B Features

GUARANTEED 1% INITIAL ACCURACY(LM385B-1.2)
GUARANTEED 2.5% INITIAL ACCURACY(LM385-1.2)
GUARANTEED 1.5% INITIAL ACCURACY(LM385B-2.5)
GUARANTEED 3% INITIAL ACCURACY(LM385-2.5)
GUARANTEED 20A OPERATING CURRENT
LOW TEMPERATURE COEFFICIENT
OPERATING  CURRENT OF 20A TO 20mA
VERY LOW DYNAMIC IMPEDANCE . . . 1

LM385B Typical Application

ORTABLE METER REFERENCES
PORTABLE TEST INSTRUMENTS
BATTERY OPERATED SYSTEMS
CURRENT LOOP INSTRUMENTATION

LM385B Connection Diagram

LM385B Connection Diagram

LM385B datasheet

LM385B
PDF/DataSheet Download

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Related Part Number

LM385B Relative Products

  • LM385-ADJ

    LM385-ADJ

    The LM385-ADJ/LM285/LM385 are micropower 3-terminal adjustable band-gap voltage reference diodes. Operating from 1.24 to 5.3V and over a 10A to 20mA current range, they feature exceptionally low dynamic impedance and good temperature stability. On-chip trimm...

  • LM385-2.5

    LM385-2.5

    The LM185-2.5/LM285-2.5/LM385-2.5 are micropower 2-terminal band-gap voltage regulator diodes. Operating over a 20 A to 20 mA current range, they feature exceptionally low dynamic impedance and good temperature stability.On-chip trimming is used to provide t...

  • LM385-1.2

    LM385-1.2

    The LM185-1.2/LM285-1.2/LM385-1.2 are micropower 2-terminal band-gap voltage regulator diodes. Operating over a 10A to 20mA current range, they feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to provide ti...

  • LM385/B-2.5

    LM385/B-2.5

    The LM385/B-2.5 is a micropower 2-terminal bandgap voltage reference, which can operate in a 20uA to 20mA current range, they feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to achieve tight voltage tolera...

  • LM385/B-1.2

    LM385/B-1.2

    The LM385/B-1.2 is a micropower 2-terminal bandgap voltage reference. Operating over a 10uA to 20mA current range, it features exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to achieve tight voltage tolerance. Si...

  • LM385/B

    LM385/B

    The LM385/B is micropower 3-terminal adjustable band-gap voltage reference. Operating from 1.24V to 5.3V and over 10uA to 20mA current range. They feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to achieve...

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