LM234

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3-terminal adjustable current source

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  • The LM134/LM234/LM334 are 3-terminal adjustable current sources characterized by: an operating current range of 10000: 1 an excellent current regulation a wide dynamic voltage range of 1V t 10V

    The current is determined by an external resistor without requiring other external components.
    Reverse voltages of up to 20V will only draw a current of several microamperes. This enables the circuit to operate as a rectifier and as a source of current in a.c. applications.
    For the LM134/LM234/LM334, the voltage on the control pin is 64mV at +25°C and is directly proportional to the absolute temperature (°K). The simplest external resistor connection generates a current with approximately 0.33%/°C temperature dependence. Zero drift can be obtained by adding an additional resistor and a diode to the external circuit.

    Key Features

    • Operates from 1V to 40V
    • Programmable from 1µA to 10mA
    • 0.02%/V current regulation
    • ±3% initial accuracy

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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS0436
      Three terminal adjustable current sources
      3.2
      496.88 KB
      PDF
      DS0436

      Three terminal adjustable current sources

    • Description Version Size Action
      AN5449
      Temperature sensors: guidelines for system integration
      1.0
      3.28 MB
      PDF
      AN5449

      Temperature sensors: guidelines for system integration

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Quality and Reliability

Part Number Marketing Status Package RoHS Compliance Grade Material Declaration**
LM234DT
Active
SO-8 Ecopack3

LM234DT

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
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Package
Packing Type
Temperature (°C) Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
min
max
LM234DT Available at 9 distributors

Distributor availability ofLM234DT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 14032 1 Order Now
RS COMPONENTS EUROPE 3600 1 Order Now
AVNET AMERICA 507 0 Order Now
FUTURE WORLDWIDE 1118 1 Order Now
ARROW EUROPE 2500 0 Order Now
Newark Element14 AMERICA 3786 0 Order Now
ARROW AMERICA 2500 2500 Order Now
MOUSER WORLDWIDE 20741 1 Order Now
Farnell Element14 EUROPE 1240 1 Order Now

Distributor reported inventory date: 2020-07-09

Distributor Name

DIGIKEY

Stock

14032

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3600

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

507

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

1118

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3786

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

20741

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1240

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-09

Buy now SO-8 Tape And Reel -25 100
Active
EAR99 MOROCCO 0.669 / 1k

LM234DT

Package

SO-8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.669 / 1k

Distributor availability ofLM234DT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 14032 1 Order Now
RS COMPONENTS EUROPE 3600 1 Order Now
AVNET AMERICA 507 0 Order Now
FUTURE WORLDWIDE 1118 1 Order Now
ARROW EUROPE 2500 0 Order Now
Newark Element14 AMERICA 3786 0 Order Now
ARROW AMERICA 2500 2500 Order Now
MOUSER WORLDWIDE 20741 1 Order Now
Farnell Element14 EUROPE 1240 1 Order Now

Distributor reported inventory date: 2020-07-09

Distributor Name

DIGIKEY

Stock

14032

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3600

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

507

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

1118

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3786

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

20741

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1240

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-09

Operating Temperature (°C)

(min)

-25

(max)

100

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.669 / 1k

ECCN (US)

EAR99

Country of Origin

MOROCCO

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors