LM234 Datasheet | STMicroelectronics

LM134-LM234 LM334 THREE TERMINAL ADJUSTABLE CURRENT SOURCES . . . . OPERATES from 1V to 40V 0.02% V CURRENT REGULATION PROGRAMMABLE from 1µA to 10m A ±3% INITIAL ACCURACY Z TO92 (Plastic Package) DESCRIPTION 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 to 40V The current is determined by an external resistor without requiring other external ponents. 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 64m V at +25o C and is directly proportionalto the absolute temperature (o K). The simplest external resistor connection generates a current with ≈ 0.33%/o C temperature dependence. Zero drift can be obtainedby adding an additionalresistor and a diode to the external circuit. PIN CONNECTIONS TO92 (Bottom view) D SO8 (Plastic Micropackage) ORDER CODES Part Number LM134 LM234 LM334 Example : LM134Z Temperature Range - 55o C, +125o C - 25 C, +100 C 0 C, +70 C o o o o Package Z - - - D - - - SO8 (Top view) V+ V6 NC 5 AD J - 3 1 ADJ 2 NC 3 NC 4 V+ October...