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

簡介

LM234屬于集成電路（IC）的電流調(diào)節(jié)/管理。由制造生產(chǎn)的LM234電流調(diào)節(jié)/管理電流調(diào)節(jié)和管理 IC 是用于監(jiān)視和調(diào)節(jié)電路電流的半導(dǎo)體器件。功能包括電流表、限流、電流鏡、電流監(jiān)控器、電流調(diào)節(jié)器、電流紋波抑制器、電流檢測、電流源、電流開關(guān)和電子保險絲，電流輸出從 100 μA 至 50 A 可調(diào)。