Datasheet > LM317-N

LM317-N

更新时间： 2024-09-24 02:58:43

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Wide Temperature Three-Pin Adjustable Regulator

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LM317-N 数据手册

LM117, LM317-N

www.ti.com

SNVS774L –MAY 2004–REVISED FEBRUARY 2011

LM117/LM317A/LM317-N 3-Terminal Adjustable Regulator

Check for Samples: LM117, LM317-N

Normally, no capacitors are needed unless the device

FEATURES

is situated more than 6 inches 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 adjustment terminal can be

bypassed to achieve very high ripple rejection ratios

which are difficult to achieve with standard 3-terminal

regulators.

•

Specified 1% Output Voltage Tolerance

(LM317A)

•

Specified Max. 0.01%/V Line Regulation

(LM317A)

•

Specified Max. 0.3% Load Regulation (LM117)

Specified 1.5A Output Current

Besides replacing fixed regulators, the LM117 is

useful in a wide variety of other applications. Since

the regulator is “floating” and sees only the input-to-

output differential voltage, supplies of several

hundred volts can be regulated as long as the

maximum input to output differential is not exceeded,

i.e., avoid short-circuiting the output.

Adjustable Output Down to 1.2V

Current Limit Constant With Temperature

P⁺Product Enhancement Tested

80 dB Ripple Rejection

Output is Short-Circuit Protected

Also, it makes an especially simple adjustable

switching regulator, a programmable output regulator,

or by connecting a fixed resistor between the

adjustment pin and output, the LM117 can be used

DESCRIPTION

The LM117 series of adjustable 3-terminal positive

voltage regulators is capable of supplying in excess

of 1.5A over a 1.2V to 37V output range. They are

exceptionally easy to use and require only two

external resistors to set the output voltage. Further,

both line and load regulation are better than standard

fixed regulators. Also, the LM117 is packaged in

standard transistor packages which are easily

mounted and handled.

a precision current regulator. Supplies with

electronic shutdown can be achieved by clamping the

adjustment terminal to ground which programs the

output to 1.2V where most loads draw little current.

For applications requiring greater output current, see

LM150 series (3A) and LM138 series (5A) data

sheets. For the negative complement, see LM137

series data sheet.

In addition to higher performance than fixed

regulators, the LM117 series offers full overload

protection available only in IC's. Included on the chip

are current limit, thermal overload protection and safe

area protection. All overload protection circuitry

remains fully functional even if the adjustment

terminal is disconnected.

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...38

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LM317-N 替代型号

型号	品牌	替代类型	描述	数据表
LMR14020	TI	功能相似	具有低 IQ 的 SIMPLE SWITCHER、4V 至 40V、2A 2.2MHz 降
LM1086	TI	功能相似	1.5-A Low Dropout Positive Regulators
LM317L-N	TI	功能相似	LM317L 3-Terminal Adjustable Regulator

与LM317-N相关器件

型号	品牌	获取价格	描述	数据表
LM317-N-MIL	TI	获取价格	Wide Temperature Three-Pin Adjustable Regulator
LM317P	STMICROELECTRONICS	获取价格	1.2V TO 37V VOLTAGE REGULATOR
LM317R	ETC	获取价格	Analog IC
LM317R	BL Galaxy Electrical	获取价格	0.8A Linear Voltage Regulator with 40V Output
LM317S	NSC	获取价格	3-Terminal Adjustable Regulator
LM317S	TGS	获取价格	3-Terminal Positive Adjustable Regulator
LM317S	FOSHAN	获取价格	TO-263
LM317S/NOPB	TI	获取价格	LM117/LM317A/LM317-N 3-Terminal Adjustable Regulator
LM317SP+	NSC	获取价格	3-Terminal Adjustable Regulator
LM317SX	NSC	获取价格	3-Terminal Adjustable Regulator

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