LM334M

更新时间： 2024-11-26 12:18:43

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LM134/LM234/LM334 3-Terminal Adjustable Current Sources

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LM334M 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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LM334M 替代型号

型号	品牌	替代类型	描述	数据表
LM334SMX/NOPB	TI	完全替代	LM134/LM234/LM334 3-Terminal Adjustable Current Sources
LM334SM/NOPB	TI	完全替代	LM134/LM234/LM334 3-Terminal Adjustable Current Sources
LM334M/NOPB	TI	完全替代	LM134/LM234/LM334 3-Terminal Adjustable Current Sources

与LM334M相关器件

型号	品牌	获取价格	描述	数据表
LM334M/NOPB	TI	获取价格	LM134/LM234/LM334 3-Terminal Adjustable Current Sources
LM334MDC	NSC	获取价格	IC SPECIALTY ANALOG CIRCUIT, UUC, DIE, Analog IC:Other
LM334MWC	TI	获取价格	3-Terminal Adjustable Current Sources
LM334MX	TI	获取价格	LM134/LM234/LM334 3-Terminal Adjustable Current Sources
LM334MX	NSC	获取价格	3-Terminal Adjustable Current Sources
LM334MX/NOPB	TI	获取价格	LM134/LM234/LM334 3-Terminal Adjustable Current Sources
LM334S	ADI	获取价格	恒定电流源和温度传感器
LM334S8	Linear	获取价格	Constant Current Source and Temperature Sensor
LM334SM	NSC	获取价格	3-Terminal Adjustable Current Sources
LM334SM	TI	获取价格	LM134/LM234/LM334 3-Terminal Adjustable Current Sources

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