LM317

更新时间： 2025-08-02 22:47:07

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
10页	155K
描述
3-TERMINAL ADJUSTABLE REGULATOR

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LM317 数据手册

LM317

3-TERMINAL ADJUSTABLE REGULATOR

SLVS044H – SEPTEMBER 1997 – REVISED DECEMBER 2001

KC PACKAGE

(TOP VIEW)

Output Voltage Range Adjustable From

1.2 V to 37 V

INPUT

Output Current Greater Than 1.5 A

Internal Short-Circuit Current Limiting

Thermal Overload Protection

OUTPUT

ADJUST

The OUTPUT terminal is in electrical

contact with the mounting base.

Output Safe-Area Compensation

Package Options Include Plastic

Small-Outline Transistor SOT-223 (DCY),

Flange Mounted (KTE) and Heat-Sink

Mounted (KC) Packages

TO-220AB

description

The LM317 is an adjustable three-terminal

positive-voltage regulator capable of supplying

more than 1.5 A over an output-voltage range of

1.2 V to 37 V. It is exceptionally easy to use and

requires only two external resistors to set the

output voltage. Furthermore, both line and load

regulation are better than standard fixed

regulators. The LM317 is packaged in the KC

(TO-220AB) and KTE packages, which are easy

to handle and use.

KTE PACKAGE

(TOP VIEW)

INPUT

OUTPUT

ADJUST

TheOUTPUT terminal is inelectrical

contact with the mounting base.

In addition to having higher performance than

fixed regulators, this device includes on-chip

current limiting, thermal overload protection, and

safe-operating-area protection. All overload

protection remains fully functional, even if the

ADJUST terminal is disconnected.

The LM317 is versatile in its applications,

including uses in programmable output regulation

and local on-card regulation. Or, by connecting a

fixed resistor between the ADJUST and OUTPUT

terminals, the LM317 can function as a precision

current regulator. Anoptionaloutputcapacitorcan

be added to improve transient response. The

ADJUST terminal can be bypassed to achieve

very high ripple-rejection ratios, which are difficult

to achieve with standard three-terminal

regulators.

DCY PACKAGE

(TOP VIEW)

INPUT

OUTPUT

ADJUST

The LM317 is characterized for operation over the

virtual junction temperature range of 0°C to

125°C.

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.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...10

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LM317 替代型号

型号	品牌	替代类型	描述	数据表
LM317DCY	TI	类似代替	3-TERMINAL ADJUSTABLE REGULATOR
LM317M	TI	类似代替	3-TERMINAL ADJUSTABLE REGULATOR
LM317DCYR	TI	类似代替	3-TERMINAL ADJUSTABLE REGULATOR

与LM317相关器件

型号	品牌	获取价格	描述	数据表
LM317 TO-220	HMSEMI	获取价格	华之美半导体
LM317(SOT-223)	UTC	获取价格	Regulator, 1 Output, BIPolar,
LM317(TO-252)	UTC	获取价格	Regulator, 1 Output, BIPolar,
LM317-AA3-R	UTC	获取价格	HIGH CURRENT 1.3V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM317-N	TI	获取价格	Wide Temperature Three-Pin Adjustable Regulator
LM317-N-MIL	TI	获取价格	Wide Temperature Three-Pin Adjustable Regulator
LM317-T30-Y	UTC	获取价格	HIGH CURRENT 1.3V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM317-TA3-T	UTC	获取价格	HIGH CURRENT 1.3V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM317-TF3-T	UTC	获取价格	HIGH CURRENT 1.3V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM317-TI	TI	获取价格	3-TERMINAL ADJUSTABLE REGULATOR

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