Datasheet > LM2940_07

LM2940_07

更新时间： 2024-02-18 11:13:06

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器
页数	文件大小	规格书
20页	557K
描述
1A Low Dropout Regulator

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM2940_07 数据手册

January 2007

LM2940/LM2940C

1A Low Dropout Regulator

General Description

age, the regulator will automatically shut down to protect both

the internal circuits and the load. The LM2940/LM2940C can-

not be harmed by temporary mirror-image insertion. Familiar

regulator features such as short circuit and thermal overload

protection are also provided.

The LM2940/LM2940C positive voltage regulator features the

ability to source 1A of output current with a dropout voltage of

typically 0.5V and a maximum of 1V over the entire temper-

ature range. Furthermore, a quiescent current reduction cir-

cuit has been included which reduces the ground current

when the differential between the input voltage and the output

voltage exceeds approximately 3V. The quiescent current

with 1A of output current and an input-output differential of 5V

is therefore only 30 mA. Higher quiescent currents only exist

when the regulator is in the dropout mode (V_IN− V_OUT≤ 3V).

Designed also for vehicular applications, the LM2940/

LM2940C and all regulated circuitry are protected from re-

verse battery installations or 2-battery jumps. During line

transients, such as load dump when the input voltage can

momentarily exceed the specified maximum operating volt-

Features

Dropout voltage typically 0.5V @I_O= 1A

■

Output current in excess of 1A

Output voltage trimmed before assembly

Reverse battery protection

Internal short circuit current limit

Mirror image insertion protection

P⁺Product Enhancement tested

Typical Application

882203

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

**C_OUTmust be at least 22 μF to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible to

the regulator. This capacitor must be rated over the same operating temperature range as the regulator and the ESR is critical; see curve.

Ordering Information

Temp

Range

Output Voltage

Package

5.0

8.0

–

9.0

–

LM2940CT-5.0

LM2940CS-5.0

LM2940CT-9.0

LM2940CS-9.0

LM2940CT-12 LM2940CT-15 TO-220

LM2940CS-12 LM2940CS-15

0°C

–

≤ T_J≤

125°C

TO-263

LM2940CSX

-5.0

LM2940CSX

-9.0

LM2940CSX

-12

LM2940CSX

-15

–

LLP

1k Units

Tape and

Reel

LM2940LD-5.0 LM2940LD-8.0 LM2940LD-9.0 LM2940LD-10 LM2940LD-12 LM2940LD-15

−40°C

≤ T_J≤

125°C

LLP

4.5k

Units

Tape and

Reel

LM2940LDX

-5.0

LM2940LDX

-8.0

LM2940LDX

-9.0

LM2940LDX

-10

LM2940LDX

-12

LM2940LDX

-15

LM2940T-5.0

LM2940S-5.0

LM2940T-8.0

LM2940S-8.0

LM2940T-9.0

LM2940S-9.0

LM2940T-10

LM2940S-10

LM2940T-12

LM2940S-12

TO-220

–

−40°C

≤ T_J≤

125°C

TO-263

LM2940SX-5.0 LM2940SX-8.0 LM2940SX-9.0 LM2940SX-10 LM2940SX-12

8822

www.national.com

12 3 4 5 6 7...20

中文翻译

下载PDF

与LM2940_07相关器件

型号	品牌	获取价格	描述	数据表
LM2940_10	UTC	获取价格	1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR
LM2940_12	UTC	获取价格	1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR
LM2940_14	UTC	获取价格	1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR
LM2940-05-AA3-D-R	UTC	获取价格	Regulator
LM2940-05-TA3-D-T	UTC	获取价格	Regulator
LM2940-05-TQ2-D-T	UTC	获取价格	Regulator
LM2940-05-TQ3-D-T	UTC	获取价格	Regulator
LM2940-08-S16-T	UTC	获取价格	Regulator
LM2940-08-TA3-T	UTC	获取价格	Regulator
LM2940-08-TN3-T	UTC	获取价格	Regulator

与LM2940_07相关文章

LTM4644/LTM4644-1：创新的四输出同步降压微模块调节器
2024-07-02

2
2N3500：一款多用途NPN硅晶体管的全面解析
2024-07-02

2
最详细资料解析：BA5917AFP参数说明、引脚说明
2024-07-02

3
MAX232IDR数据手册：产品特性、电气参数、替代型号推荐
2024-07-02

1

产品中心

服务支持

精选活动

关于我们

帮助中心

LM2940_07

LM2940_07 数据手册

与LM2940_07相关器件

与LM2940_07相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LM2940_07

LM2940_07 数据手册

与LM2940_07相关器件

与LM2940_07相关文章

您还可以找

您在本页遇到什么问题？