LM334

更新时间： 2024-11-07 12:18:39

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LM134/LM234/LM334 3-Terminal Adjustable Current Sources

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LM334 数据手册

LM134, LM234, LM334

www.ti.com

SNVS746E –MARCH 2000–REVISED MAY 2013

LM134/LM234/LM334 3-Terminal Adjustable Current Sources

Check for Samples: LM134, LM234, LM334

FEATURES

The sense voltage used to establish operating current

•

Operates From 1V to 40V

in the LM134 is 64mV at 25°C and is directly

proportional to absolute temperature (°K). The

simplest one external resistor connection, then,

generates a current with ≈+0.33%/°C temperature

dependence. Zero drift operation can be obtained by

adding one extra resistor and a diode.

0.02%/V Current Regulation

Programmable From 1μA to 10mA

True 2-Terminal Operation

Available as Fully Specified Temperature

Sensor

Applications for the current sources include bias

networks, surge protection, low power reference,

ramp generation, LED driver, and temperature

sensing. The LM234-3 and LM234-6 are specified as

true temperature sensors with ensured initial

accuracy of ±3°C and ±6°C, respectively. These

devices are ideal in remote sense applications

because series resistance in long wire runs does not

affect accuracy. In addition, only 2 wires are required.

•

±3% Initial Accuracy

DESCRIPTION

The LM134/LM234/LM334 are 3-terminal adjustable

current sources featuring 10,000:1 range in operating

current, excellent current regulation and a wide

dynamic voltage range of 1V to 40V. Current is

established with one external resistor and no other

parts are required. Initial current accuracy is ±3%.

The LM134/LM234/LM334 are true floating current

sources with no separate power supply connections.

In addition, reverse applied voltages of up to 20V will

draw only a few dozen microamperes of current,

allowing the devices to act as both a rectifier and

current source in AC applications.

The LM134 is specified over a temperature range of

−55°C to +125°C, the LM234 from −25°C to +100°C

and the LM334 from 0°C to +70°C. These devices

are available in TO hermetic, TO-92 and SOIC-8

plastic packages.

Connection Diagrams

Figure 1. SOIC-8 Surface Mount Package

(LM334M; LM334M/NOPB; LM334MX;

LM334MX/NOPB)

Figure 2. SOIC-8 Alternative Pinout Surface Mount

Package

(LM334SM; LM334SM/NOPB; LM334SMX;

LM334SMX/NOPB)

See Package Number D

Figure 3. TO Metal Can Package (Bottom View)

See Package Number NDV

Figure 4. TO-92 Plastic Package (Bottom View)

See Package Number LP

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...26

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与LM334相关器件

型号	品牌	获取价格	描述	数据表
LM334 MWC	TI	获取价格	具有 0°C 至 70°C 工作温度范围的 3 引脚可调节电流源 \| YS \| 0 \| -
LM334AAP	STMICROELECTRONICS	获取价格	Three terminal adjustable current sources
LM334AD	STMICROELECTRONICS	获取价格	Three terminal adjustable current sources
LM334ADT	STMICROELECTRONICS	获取价格	Three terminal adjustable current sources
LM334AT	STMICROELECTRONICS	获取价格	Three terminal adjustable current sources
LM334AZ	STMICROELECTRONICS	获取价格	Three terminal adjustable current sources
LM334AZT	STMICROELECTRONICS	获取价格	Three terminal adjustable current sources
LM334D	STMICROELECTRONICS	获取价格	THREE TERMINAL ADJUSTABLE CURRENT SOURCES
LM334DT	STMICROELECTRONICS	获取价格	Three terminal adjustable current sources
LM334H	NSC	获取价格	3-Terminal Adjustable Current Sources

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