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3-terminal adjustable current source

Quantity $ per Unit Savings
1 - 9$2.580%
10 - 24$2.3210%
25 - 99$2.2015%
100 - 240$1.8727%
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In stock
Parameter NameParameter Value
Operating Temp Min Celsius-25.0
Operating Temp Max Celsius100.0
Packing TypeTape And Reel
RoHs compliantEcopack3
Package NameSO-8

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