LM2931CT

更新时间： 2024-11-22 22:55:43

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局域网
页数	文件大小	规格书
18页	364K
描述
Series Low Dropout Regulators

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数据手册
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LM2931CT 数据手册

March 2000

LM2931

Series Low Dropout Regulators

Both versions are available in a TO-220 power package,

TO-263 surface mount package, and an 8-lead surface

mount package. The fixed output version is also available in

the TO-92 plastic and 6-Bump micro SMD packages.

General Description

The LM2931 positive voltage regulator features a very low

quiescent current of 1mA or less when supplying 10mA

loads. This unique characteristic and the extremely low

input-output differential required for proper regulation (0.2V

for output currents of 10mA) make the LM2931 the ideal

regulator for standby power systems. Applications include

memory standby circuits, CMOS and other low power pro-

cessor power supplies as well as systems demanding as

much as 100mA of output current.

Features

n Very low quiescent current

n Output current in excess of 100 mA

n Input-output differential less than 0.6V

n Reverse battery protection

Designed originally for automotive applications, the LM2931

and all regulated circuitry are protected from reverse battery

installations or 2 battery jumps. During line transients, such

as a load dump (60V) when the input voltage to the regulator

can momentarily exceed the specified maximum operating

voltage, the regulator will automatically shut down to protect

both internal circuits and the load. The LM2931 cannot be

harmed by temporary mirror-image insertion. Familiar regu-

lator features such as short circuit and thermal overload pro-

tection are also provided.

n 60V load dump protection

n −50V reverse transient protection

n Short circuit protection

n Internal thermal overload protection

n Mirror-image insertion protection

n Available in TO-220, TO-92, TO-263, SO-8 or 6-Bump

micro SMD packages

n Available as adjustable with TTL compatible switch

n See AN-1112 for micro SMD considerations

The LM2931 family includes a fixed 5V output ( 3.8% toler-

ance for A grade) or an adjustable output with ON/OFF pin.

Connection Diagrams

FIXED VOLTAGE OUTPUT

TO-220 3-Lead Power Package

TO-263 Surface-Mount Package

DS005254-6

DS005254-11

Front View

Top View

DS005254-12

Side View

8-Pin Surface Mount

TO-92 Plastic Package

DS005254-8

Bottom View

DS005254-7

*NC = Not internally connected. Must be electrically isolated from the rest

of the circuit for the micro SMD package.

Top View

DS005254

www.national.com

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中文翻译

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LM2931CT 替代型号

型号	品牌	替代类型	描述	数据表
LM2931CT/NOPB	TI	功能相似	LM2931-N Series Low Dropout Regulators
LM2931ACT	ONSEMI	功能相似	LOW DROPOUT VOLTAGE REGULATORS

与LM2931CT相关器件

型号	品牌	获取价格	描述	数据表
LM2931CT/LF03	TI	获取价格	LM2931-N Series Low Dropout Regulators
LM2931CT/LF04	TI	获取价格	LM2931-N Series Low Dropout Regulators
LM2931CT/NOPB	TI	获取价格	LM2931-N Series Low Dropout Regulators
LM2931CT/NOPB	NSC	获取价格	IC VREG 3 V-24 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PSFM5, LEAD FREE, PLAST
LM2931CT-5.0	Wing Shing	获取价格	Low Dropout Regulator
LM2931CTG	ONSEMI	获取价格	100 mA, Adjustable Output, LDO Voltage Regulator with 60 V Load Dump Protection
LM2931CTH	ONSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATORS
LM2931CTH	MOTOROLA	获取价格	LOW DROPOUT VOLTAGE REGULATORS
LM2931CTV	MOTOROLA	获取价格	LOW DROPOUT VOLTAGE REGULATORS
LM2931CTV	ONSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATORS

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