LM317DT

更新时间： 2024-11-23 22:47:07

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器调节器输出元件
页数	文件大小	规格书
25页	732K
描述
3-Terminal Adjustable Regulator

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技术参数
数据手册

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LM317DT 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	TO-252, SMSIP3H,.38,90TB	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.12	可调性：	ADJUSTABLE
标称回动电压 1：	3 V	最大差分输入-输出电压：	40 V
最小差分输入-输出电压：	3 V	JESD-30 代码：	R-PSSO-G2
JESD-609代码：	e0	长度：	6.58 mm
最大电网调整率 (%/V)：	0.07	最大负载调整率 (%)：	1.5%
功能数量：	1	输出次数：	1
端子数量：	2	工作温度TJ-Max：	125 °C
工作温度TJ-Min：		最大输出电流 1：	0.5 A
最大输出电压 1：	37 V	最小输出电压 1：	1.2 V
封装主体材料：	PLASTIC/EPOXY	封装代码：	TO-252
封装等效代码：	SMSIP3H,.38,90TB	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	调节器类型：	ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR
座面最大高度：	2.38 mm	子类别：	Other Regulators
表面贴装：	YES	技术：	BIPOLAR
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	2.3 mm	端子位置：	SINGLE
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	6.1 mm
Base Number Matches：	1

LM317DT 数据手册

July 2004

LM117/LM317A/LM317

3-Terminal Adjustable Regulator

age, supplies of several hundred volts can be regulated as

long as the maximum input to output differential is not ex-

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

General 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.

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 as a precision current regulator. Sup-

plies with electronic shutdown can be achieved by clamping

the adjustment terminal to ground which programs the out-

put to 1.2V where most loads draw little current.

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 ter-

minal is disconnected.

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.

Features

n Guaranteed 1% output voltage tolerance (LM317A)

n Guaranteed max. 0.01%/V line regulation (LM317A)

n Guaranteed max. 0.3% load regulation (LM117)

n Guaranteed 1.5A output current

n Adjustable output down to 1.2V

Normally, no capacitors are needed unless the device 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 stan-

dard 3-terminal regulators.

n Current limit constant with temperature

n P⁺Product Enhancement tested

n 80 dB ripple rejection

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 volt-

n Output is short-circuit protected

LM117 Series Packages

Typical Applications

Part Number

Suffix

Design

Load

Current

1.5A

1.2V–25V Adjustable Regulator

Package

TO-3

TO-39

0.5A

1.5A

TO-220

LCC

0.5A

1.5A

TO-263

SOT-223

TO-252

EMP

MDT

0.5A

00906301

SOT-223 vs. D-Pak (TO-252)

Packages

Full output current not available at high input-output voltages

Needed if device is more than 6 inches from filter capacitors.

†

Optional — improves transient response. Output capacitors in the range

of 1µF to 1000µF of aluminum or tantalum electrolytic are commonly used

to provide improved output impedance and rejection of transients.

00906354

Scale 1:1

DS009063

www.national.com

12 3 4 5 6 7...25

中文翻译

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与LM317DT相关器件

型号	品牌	获取价格	描述	数据表
LM317DT-BP	MCC	获取价格	Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, PSSO2, ROHS COMPLIANT, D2-PACK,
LM317DT-BP-HF	MCC	获取价格	Adjustable Positive Standard Regulator,
LM317DT-TP	MCC	获取价格	暂无描述
LM317DT-TP-HF	MCC	获取价格	Adjustable Positive Standard Regulator,
LM317DTX	TI	获取价格	1.2 V-37V ADJUSTABLE POSITIVE REGULATOR, PSSO2, TO-252, DPAK-3
LM317D-XX-AR	TAITRON	获取价格	Adustable Positive Voltage Regulator
LM317D-XX-BL	TAITRON	获取价格	Adustable Positive Voltage Regulator
LM317D-XX-TR30	TAITRON	获取价格	Adustable Positive Voltage Regulator
LM317D-XX-TR70	TAITRON	获取价格	Adustable Positive Voltage Regulator
LM317D-XX-TU	TAITRON	获取价格	Adustable Positive Voltage Regulator

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