Datasheet > LM317M/D

LM317M/D

更新时间： 2024-09-12 23:46:55

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其他 - ETC		稳压器
页数	文件大小	规格书
12页	134K
描述
Three-Terminal Adjustable Output Positive Voltage Regulator

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LM317M/D 数据手册

LM317M

Three-Terminal Adjustable

Output Positive Voltage

Regulator

The LM317M is an adjustable three–terminal positive voltage

regulator capable of supplying in excess of 500 mA over an output

voltage range of 1.2 V to 37 V. This voltage regulator is exceptionally

easy to use and requires only two external resistors to set the output

voltage. Further, it employs internal current limiting, thermal

shutdown and safe area compensation, making it essentially blow–out

proof.

http://onsemi.com

Heatsink surface

connected to Pin 2

The LM317M serves a wide variety of applications including local,

on–card regulation. This device also makes an especially simple

adjustable switching regulator, a programmable output regulator, or by

connecting a fixed resistor between the adjustment and output, the

LM317M can be used as a precision current regulator.

• Output Current in Excess of 500 mA

• Output Adjustable between 1.2 V and 37 V

• Internal Thermal Overload Protection

TO–220AB

T SUFFIX

CASE 221A

• Internal Short Circuit Current Limiting

• Output Transistor Safe–Area Compensation

• Floating Operation for High Voltage Applications

• Eliminates Stocking Many Fixed Voltages

SOT–223

ST SUFFIX

CASE 318E

out

LM317M

DPAK

DT SUFFIX

CASE 369A

240

Adj

Adjust

0.1µF

Heatsink Surface (shown as terminal 4 in

case outline drawing) is connected to Pin 2.

1.0µF

PIN ASSIGNMENT

Adjust

out

ă* = C is required if regulator is located an appreciable distance from power supply filter.

** = C is not needed for stability, however, it does improve transient response.

_{+ 1.25āāāVāā}ǒ_{1 )}Ǔ_{) I}

out

āR

Adjā 2

ORDERING INFORMATION

Since I is controlled to less than 100 µA, the error associated with this

Adj

See detailed ordering and shipping information in the package

dimensions section on page 10 of this data sheet.

term is negligible in most applications.

Figure 1. Simplified Application

Semiconductor Components Industries, LLC, 2001

Publication Order Number:

March, 2001 – Rev. 7

LM317M/D

12 3 4 5 6 7...12

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LM317M_06	ONSEMI	获取价格	500 mA Adjustable Output, Positive Voltage Regulator
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LM317M_08	TI	获取价格	3-TERMINAL ADJUSTABLE REGULATOR
LM317M_10	UTC	获取价格	MEDIUM CURRENT 1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM317M_11	UTC	获取价格	MEDIUM CURRENT 1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM317M_11	FAIRCHILD	获取价格	3-Terminal 0.5A Positive Adjustable Regulator
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