Datasheet > LM2931_05

LM2931_05

更新时间： 2024-01-08 04:54:03

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
18页	410K
描述
Series Low Dropout Regulators

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LM2931_05 数据手册

June 2005

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 cur-

rents of 10mA) make the LM2931 the ideal regulator for

standby power systems. Applications include memory stand-

by circuits, CMOS and other low power processor power

supplies as well as systems demanding as much as 100mA

of output current.

Features

Very low quiescent current

■

Output current in excess of 100 mA

Input-output differential less than 0.6V

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.

60V load dump protection

−50V reverse transient protection

Short circuit protection

Internal thermal overload protection

Mirror-image insertion protection

■

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

cro SMD packages

Available as adjustable with TTL compatible switch

■

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

525406

525411

Front View

Top View

525412

Side View

8-Pin Surface Mount

TO-92 Plastic Package

525408

Bottom View

525407

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

the circuit for the micro SMD package.

Top View

5254

www.national.com

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与LM2931_05相关器件

型号	品牌	获取价格	描述	数据表
LM2931_07	ONSEMI	获取价格	100 mA, Adjustable Output, LDO Voltage Regulator with 60 V Load Dump Protection
LM2931_11	ONSEMI	获取价格	100 mA, Adjustable Output, LDO Voltage Regulator with 60 V Load Dump Protection
LM2931~1	ETC	获取价格
LM2931-5.0	Wing Shing	获取价格	Low Dropout Regulator
LM2931-5AQD	ETC	获取价格	Positive Fixed Voltage Regulator
LM2931-5AQDR	TI	获取价格	5V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PDSO8, PLASTIC, SO-8
LM2931-5AQKC	ETC	获取价格	Positive Fixed Voltage Regulator
LM2931-5AQLP	ETC	获取价格	Positive Fixed Voltage Regulator
LM2931A	FAIRCHILD	获取价格	Low Dropout Voltage Regulator
LM2931ACD	MOTOROLA	获取价格	LOW DROPOUT VOLTAGE REGULATORS

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