Datasheet > LM317

LM317

更新时间： 2024-01-15 14:13:34

品牌	Logo	应用领域
永盛 - Wing Shing		稳压器
页数	文件大小	规格书
3页	231K
描述
3-TERMINAL ADJUSTABLE REGULATORS

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LM317 数据手册

LM317

3-TERMINAL ADJUSTABLE REGULATORS

DESCRIPTION

The LM317 are adjustable 3-terminal positive-voltage regulators capable of supplying 1.5A over

a differential voltage range of 3V to 40V. They are exceptionally easy to use and require only two

external resistors to set the output voltage. Both input and output regulation is better than

standard fixed regulators.

In addition to higher performance than fixed regulators, these regulators offer full overload

protection available only in integrated circuits. Included on the chip are current limit, thermal

overload protection, and safe-area protection. All overload protection circuit remains fully

functional even if the adjustment terminal is disconnected. Normally, no capacitors are needed

unless the device is situated far from the input filter capacitors in which case an input bypass is

needed. An optional output capacitor can be added to improve transient response.

The primary applications of each of these regulators is that of a programmable output regulator,

but by connecting a fixed resistor between adjustment terminal and the output terminal, each

device can be used as a precision current regulator. Even though the regulator is floating and

sees only the input-to-output differential voltage, use of these devices to regulate output voltages

that would cause the maximum-rated differential voltage to be exceeded if the output became

shorted is not recommended

TO-220 PACKAGE

LM317T

FEATURES

INPUT

OUTPUT

ADJUSTMENT

Output Voltage Range Adjustable from 1.2 V to 37V

Output Current Capability of 1.5A Max

Input Regulation Typically 0.01% Per Input-Volt

Change

Output Regulation Typically 0.1%

Peak Output Current Constant over Temperature

Range of Regulator

Popular 3-Lead TO-220 AB Package

Ripple Rejection Typically 80 dB

TO-92

INPUT

LM317LZ

OUTPUT

ADJ

ABSOLUTE MAXIMUM RATINGS

Input-Output Voltage Differential V_I- V_O

Operating Junction Temperature Range

Continuous total dissipation at 25℃ free-air temperature

40V

0℃ to +125℃

2000mW

15W

–65℃ to +150℃

260℃

Continuous total dissipation at (or below ) 25℃ case temperature

Storage Temperature

Lead Temperature1.6 mm from case for 10 seconds

RECOMMENDED OPERATING CONDITIONS

MIN MAX UNIT

OUTPUT CURRENT, I_O

OPERATING VIRTUAL JUNCTION TEMPERATURE,T_J

10 1500

℃

Wing Shing Computer Components Co., (H.K.)Ltd.

Homepage: http://www.wingshing.com

Tel:(852)2341 9276 Fax:(852)2797 8153

E-mail: wsccltd@hkstar.com

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与LM317相关器件

型号	品牌	获取价格	描述	数据表
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/D	ETC	获取价格	Three-Terminal Adjustable Output Positive Voltage Regulator
LM317_06	ONSEMI	获取价格	1.5 A Adjustable Output, Positive Voltage Regulator
LM317_11	ONSEMI	获取价格	1.5 A Adjustable Output, Positive Voltage Regulator
LM317_17	UTC	获取价格	HIGH CURRENT 1.3V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM3171	FAIRCHILD	获取价格	3-Terminal 0.1A Positive Adjustable Regulator
LM317A	UTC	获取价格	MEDIUM CURRENT 1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM317A	NSC	获取价格	3-Terminal Adjustable Regulator
LM317A	TI	获取价格	1.5A、40V、高精度、可调节线性稳压器

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