LM2940S-5.0

更新时间： 2024-11-01 12:09:43

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
35页	2445K
描述
LM2940-N/LM2940C 1A Low Dropout Regulator

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LM2940S-5.0 数据手册

LM2940-N, LM2940C

www.ti.com

SNVS769I –MARCH 2000–REVISED APRIL 2013

LM2940-N/LM2940C 1A Low Dropout Regulator

Check for Samples: LM2940-N, LM2940C

FEATURES

DESCRIPTION

The LM2940-N/LM2940C positive voltage regulator

•

Dropout Voltage Typically 0.5V @I_O= 1A

Output Current in Excess of 1A

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 temperature range. Furthermore, a

quiescent current reduction circuit 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).

Output Voltage Trimmed Before Assembly

Reverse Battery Protection

Internal Short Circuit Current Limit

Mirror Image Insertion Protection

P⁺Product Enhancement Tested

Designed also for vehicular applications, the LM2940-

N/LM2940C and all regulated circuitry are protected

from reverse battery installations or 2-battery jumps.

During line transients, such as load dump when the

input voltage can momentarily exceed the specified

maximum operating voltage, the regulator will

automatically shut down to protect both the internal

circuits and the load. The LM2940/LM2940C cannot

be harmed by temporary mirror-image insertion.

Familiar regulator features such as short circuit and

thermal overload protection are also provided.

Typical Application

*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.

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...35

中文翻译

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LM2940S-5.0 替代型号

型号	品牌	替代类型	描述	数据表
LM2940S-5.0/NOPB	TI	完全替代	LM2940-N/LM2940C 1A Low Dropout Regulator
LM2940SX-5.0	TI	完全替代	LM2940-N/LM2940C 1A Low Dropout Regulator
LM2940CSX-5.0/NOPB	TI	类似代替	LM2940-N/LM2940C 1A Low Dropout Regulator

与LM2940S-5.0相关器件

型号	品牌	获取价格	描述	数据表
LM2940S-5.0/NOPB	TI	获取价格	LM2940-N/LM2940C 1A Low Dropout Regulator
LM2940S-8.0	TI	获取价格	LM2940-N/LM2940C 1A Low Dropout Regulator
LM2940S-8.0	NSC	获取价格	1A Low Dropout Regulator
LM2940S-8.0/NOPB	TI	获取价格	LM2940-N/LM2940C 1A Low Dropout Regulator
LM2940S-9.0	NSC	获取价格	1A Low Dropout Regulator
LM2940S-9.0	TI	获取价格	LM2940-N/LM2940C 1A Low Dropout Regulator
LM2940S-9.0/NOPB	TI	获取价格	LM2940-N/LM2940C 1A Low Dropout Regulator
LM2940SX-10	TI	获取价格	LM2940-N/LM2940C 1A Low Dropout Regulator
LM2940SX-10	NSC	获取价格	1A Low Dropout Regulator
LM2940SX-10/NOPB	TI	获取价格	LM2940-N/LM2940C 1A Low Dropout Regulator

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