LM234 Three Terminal Adjustable Current Source

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

技术特性

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

管脚定义图

LM234 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
LM234DT	Active		1000	SO-8	Tape And Reel	-25 °C-100 °C	LM234DT
LM234D	NRND		1000	SO-8	Tube	-25 °C-100 °C	LM234D

DATASHEET

描述	版本	大小
LM234 :Three terminal adjustable current sources	3	504KB