LM234中文资料三端可调电流源数据手册ST规格书

描述 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 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.

特性 Features

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

简介

LM234属于集成电路（IC）的电流调节/管理。由制造生产的LM234电流调节/管理电流调节和管理 IC 是用于监视和调节电路电流的半导体器件。功能包括电流表、限流、电流镜、电流监控器、电流调节器、电流纹波抑制器、电流检测、电流源、电流开关和电子保险丝，电流输出从 100 μA 至 50 A 可调。