L4949

更新时间： 2024-09-25 22:47:23

品牌	Logo	应用领域
安森美 - ONSEMI		稳压器
页数	文件大小	规格书
8页	195K
描述
MULTIFUNCTION VERY LOW DROPOUT VOLTAGE REGULATOR

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数据手册

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L4949 数据手册

Order this document from L4949/D

MULTIFUNCTION

VERY LOW DROPOUT

VOLTAGE REGULATOR

The L4949 is a monolithic integrated 5.0 V voltage regulator with a very

low dropout and additional functions such as power–on reset and input

voltage sense.

It is designed for supplying the micro–computer controlled systems

especially in automotive applications.

SILICON MONOLITHIC

INTEGRATED CIRCUIT

• Operating DC Supply Voltage Range 5.0 V to 28 V

• Transient Supply Voltage Up to 40 V

• Extremely Low Quiescent Current in Standby Mode

• High Precision Standby Output Voltage 5.0 V ±1%

• Output Current Capability Up to 100 mA

• Very Low Dropout Voltage Less Than 0.4 V

• Reset Circuit Sensing The Output Voltage

• Programmable Reset Pulse Delay With External Capacitor

• Voltage Sense Comparator

• Thermal Shutdown and Short Circuit Protections

N SUFFIX

PLASTIC PACKAGE

CASE 626

D SUFFIX

PLASTIC PACKAGE

CASE 751

Representative Block Diagram

Output

Voltage (V

)

out

PIN CONNECTIONS

Supply

Voltage (V

)

Preregulator

6.0 V

out

2.0 µA

Reset

Gnd

–

2.0 V

Regulator

Sense

Output

Reset

Sense

Input

(S )

(Top View)

(S )

–

1.23 V

ORDERING INFORMATION

Operating

1.23 V

ref

Sense

Temperature Range

Device

L4949N

L4949D

Package

Gnd

DIP–8

T = –40° to +125°C

SO–8

Motorola, Inc. 1998

Rev 1

12 3 4 5 6 7 8

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