LM340K-5.0

更新时间： 2024-11-25 22:32:35

品牌	Logo	应用领域
美国国家半导体 - NSC		三端稳压器
页数	文件大小	规格书
17页	920K
描述
3-Terminal Positive Regulators

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中文翻译

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技术参数
数据手册

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LM340K-5.0 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	TO-3, TO-204/-3	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.05	可调性：	FIXED
标称回动电压 1：	2 V	最大绝对输入电压：	35 V
最大输入电压：	25 V	最小输入电压：	7 V
JESD-30 代码：	O-MBFM-P2	JESD-609代码：	e0
最大电网调整率：	0.05%	最大负载调整率：	0.05%
湿度敏感等级：	1	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：	1 A	最大输出电压 1：	5.25 V
最小输出电压 1：	4.75 V	标称输出电压 1：	5 V
封装主体材料：	METAL	封装代码：	TO-3
封装等效代码：	TO-204/-3	封装形状：	ROUND
封装形式：	FLANGE MOUNT	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	调节器类型：	FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR
子类别：	Other Regulators	表面贴装：	NO
技术：	BIPOLAR	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	PIN/PEG	端子位置：	BOTTOM
处于峰值回流温度下的最长时间：	40	最大电压容差：	5%
Base Number Matches：	1

LM340K-5.0 数据手册

November 2004

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...17

中文翻译

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与LM340K-5.0相关器件

型号	品牌	获取价格	描述	数据表
LM340K-5.0/NOPB	TI	获取价格	LM340-N/LM78XX Series 3-Terminal Positive Regulators
LM340K5.07805P+	NSC	获取价格	3-Terminal Positive Regulators
LM340K-5-0	TI	获取价格	LM340-N/LM78XX Series 3-Terminal Positive Regulators
LM340K6.0	TI	获取价格	暂无描述
LM340K-6.0	ETC	获取价格	Positive Fixed Voltage Regulator
LM340K8.0	NSC	获取价格	IC,VOLT REGULATOR,FIXED,+8V,BIPOLAR,TO-204/-3,3PIN,METAL
LM340K-8.0	ETC	获取价格	Positive Fixed Voltage Regulator
LM340KC-12	TI	获取价格	12V FIXED POSITIVE REGULATOR, MBFM2, METAL CAN, TO-3, 2 PIN
LM340KC-15	TI	获取价格	15V FIXED POSITIVE REGULATOR, MBFM2, TO-3
LM340KC-15	NSC	获取价格	IC VREG 15 V FIXED POSITIVE REGULATOR, MBFM2, TO-3, Fixed Positive Single Output Standard

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