Datasheet > LM340G-15MDC

LM340G-15MDC

更新时间： 2024-11-25 21:12:11

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
19页	588K
描述
IC,VOLT REGULATOR,FIXED,+15V,BIPOLAR,DIE

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LM340G-15MDC 技术参数

生命周期：	Obsolete	包装说明：	, DIE OR CHIP
Reach Compliance Code：	unknown	风险等级：	5.84
可调性：	FIXED	标称回动电压 1：	2 V
最大绝对输入电压：	35 V	最大电网调整率：	0.15%
最大负载调整率：	0.15%	输出次数：	1
工作温度TJ-Max：	125 °C	工作温度TJ-Min：
最大输出电流 1：	1 A	标称输出电压 1：	15 V
封装等效代码：	DIE OR CHIP	认证状态：	Not Qualified
子类别：	Other Regulators	技术：	BIPOLAR
最大电压容差：	5%	Base Number Matches：	1

LM340G-15MDC 数据手册

April 2003

LM340/LM78XX Series

3-Terminal Positive Regulators

General Description

The 5V, 12V, and 15V regulator options are available in the

steel TO-3 power package. The LM340A/LM340/LM78XXC

series is available in the TO-220 plastic power package, and

the LM340-5.0 is available in the SOT-223 package, as well

as the LM340-5.0 and LM340-12 in the surface-mount TO-

263 package.

The

LM140/LM340A/LM340/LM78XXC

monolithic

3-terminal positive voltage regulators employ internal

current-limiting, thermal shutdown and safe-area compensa-

tion, making them essentially indestructible. If adequate heat

sinking is provided, they can deliver over 1.0A output cur-

rent. They are intended as fixed voltage regulators in a wide

range of applications including local (on-card) regulation for

elimination of noise and distribution problems associated

with single-point regulation. In addition to use as fixed volt-

age regulators, these devices can be used with external

components to obtain adjustable output voltages and cur-

rents.

Features

n Complete specifications at 1A load

n Output voltage tolerances of 2% at T_j= 25˚C and 4%

over the temperature range (LM340A)

n Line regulation of 0.01% of V_OUT/V of ∆V_INat 1A load

(LM340A)

n Load regulation of 0.3% of V_OUT/A (LM340A)

n Internal thermal overload protection

n Internal short-circuit current limit

n Output transistor safe area protection

n P⁺Product Enhancement tested

Considerable effort was expended to make the entire series

of regulators easy to use and minimize the number of exter-

nal components. It is not necessary to bypass the output,

although this does improve transient response. Input by-

passing is needed only if the regulator is located far from the

filter capacitor of the power supply.

Typical Applications

Fixed Output Regulator

Adjustable Output Regulator

00778102

00778101

= 5V + (5V/R1 + I ) R2 5V/R1 3 I ,

Q Q

OUT

Required if the regulator is located far from the power supply filter.

load regulation (L ) ≈ [(R1 + R2)/R1] (L of LM340-5).

Although no output capacitor is needed for stability, it does help transient

response. (If needed, use 0.1 µF, ceramic disc).

Comparison between SOT-223 and D-Pak (TO-252)

Packages

Current Regulator

00778103

00778138

Scale 1:1

∆I = 1.3 mA over line and load changes.

DS007781

www.national.com

12 3 4 5 6 7...19

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与LM340G-15MDC相关器件

型号	品牌	获取价格	描述	数据表
LM340G-5MDC	NSC	获取价格	IC,VOLT REGULATOR,FIXED,+5V,BIPOLAR,DIE
LM340G-5MWC	NSC	获取价格	IC,VOLT REGULATOR,FIXED,+5V,BIPOLAR,WAFER
LM340G-5MWC	TI	获取价格	IC,VOLT REGULATOR,FIXED,+5V,BIPOLAR,WAFER
LM340K12	MOTOROLA	获取价格	Regulator, 1 Output, BIPolar,
LM340K-12	NSC	获取价格	3-Terminal Positive Regulators
LM340K-12	TI	获取价格	LM340/LM78XX Series 3-Terminal Positive Regulators
LM340K127812P+	NSC	获取价格	3-Terminal Positive Regulators
LM340K15	ETC	获取价格	Analog IC
LM340K-15	NSC	获取价格	3-Terminal Positive Regulators
LM340K-15	TI	获取价格	LM340/LM78XX Series 3-Terminal Positive Regulators

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