LM334LM134LM234技术参数文档.pdf

LM134-LM234 LM334 THREE TERMINAL ADJUSTABLE CURRENT SOURCES .OPERATES from 1V to 40V .0.02% V CURRENT REGULATION .PROGRAMMABLE from 1µA to 10mA .±3% INITIAL ACCURACY Z TO92 (Plastic Package) DESCRIPTION The LM134/LM234/LM334 are 3-terminal adjust- able current sources characterized by : - an operatingcurrent range of 10000 : 1 - an excellent current regulation - a wide dynamic voltage range of 1V to 40V D The current is determined by an external resistor SO8 without requiring other external components. (Plastic Micropackage) Reverse voltages of up to 20V will only draw a cur- rent of several microamperes. This enables the circuit tooperate asa rectifierandas a sourceofcur- rent in a.c. applications. ORDER CODES For the LM134/LM234/LM334, the voltage on the Part Num- Temperature Package o control pin is 64mV at +25 C and is directly propor- ber Range Z D tionaltothe absolutetemperature(oK). The simplest o o LM134 –55 C, +125 C • • external resistor connection generates a current