This is the Texas Instruments LM334Z 3-terminal adjustable current source. The regulator only needs one resistor to set the output current. No seperate power supply connections are needed as this is a true floating current source. It can have up to 20V reverse voltage applied and will act as a rectifier allowing only a few microamps of current o flow. With the addition of another resistor and a diode the regulator operates with zero temperature drift. Applications for the current sources include bias networks, surge protection, low power reference, ramp generation, LED driver, and temperature sensing. * Programmable output current from 1µA to 10mA * Operating voltage range 1V to 40V * 0.02%/V current regulation * ±3% initial accuracy * TO-92 package We also supply the National Semiconductor LM334 in a TO-92 or SO-8 packages. https://elecena.pl/product/27173182/texas-instruments-lm334z-adjustable-current-source-1-40v-10ma-to92 2024-11-08 https://elecena.pl/product/27173182/texas-instruments-lm334z-adjustable-current-source-1-40v-10ma-to92 2026-05-15 https://elecena.pl/product/27173182/texas-instruments-lm334z-adjustable-current-source-1-40v-10ma-to92 2026-07-23 https://elecena.pl/product/27173182/texas-instruments-lm334z-adjustable-current-source-1-40v-10ma-to92 2026-10-26