Datasheet > LT1121_15

LT1121_15

更新时间： 2024-11-23 01:11:59

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
16页	274K
描述
Micropower Low Dropout Regulators with Shutdown

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中文翻译

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LT1121_15 数据手册

LT1121/LT1121-3.3/LT1121-5

Micropower Low Dropout

Regulators with Shutdown

FEATURES

DESCRIPTION

The LT^®1121/LT1121-3.3/LT1121-5 are micropower low

dropout regulators with shutdown. These devices are ca-

pableofsupplying150mAofoutputcurrentwithadropout

voltage of 0.4V. Designed for use in battery-powered sys-

tems, thelowquiescentcurrent, 30µAoperatingand16µA

in shutdown, makes them an ideal choice. The quiescent

current is well-controlled; it does not rise in dropout as it

does with many other low dropout PNP regulators.

0.4V Dropout Voltage

150mA Output Current

30µA Quiescent Current

No Protection Diodes Needed

Adjustable Output from 3.75V to 30V

3.3V and 5V Fixed Output Voltages

Controlled Quiescent Current in Dropout

Shutdown

16µA Quiescent Current in Shutdown

OtherfeaturesoftheLT1121/LT1121-3.3/LT1121-5include

the ability to operate with very small output capacitors.

They are stable with only 0.33µF on the output while most

older devices require between 1µF and 100µF for stability.

Small ceramic capacitors can be used, enhancing manu-

facturability. Also the input may be connected to ground

or a reverse voltage without reverse current flow from

output to input. This makes the LT1121 series ideal for

backuppowersituationswheretheoutputisheldhighand

the input is at ground or reversed. Under these conditions

only 16µA will flow from the output pin to ground.

Stable with 0.33µF Output Capacitor

Reverse Battery Protection

ꢀ

No Reverse Current with Input Low

Thermal Limiting

Available in the 8-Lead SO, 8-Lead PDIP, 3-Lead

SOT-23 and 3-Lead TO-92 Packages

APPLICATIONS

Low Current Regulator

Regulator for Battery-Powered Systems

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Post Regulator for Switching Supplies

TYPICAL APPLICATION

5V Battery-Powered Supply with Shutdown

Dropout Voltage

0.5

3.3V

OUT

LT1121-3.3

150mA

0.4

0.3

0.2

0.1

1μF

SOLID TANTALUM

SHDN

GND

(PIN 5) OUTPUT

SHDN

<0.25

>2.8

OFF

LT1121 • TA01

OUTPUT CURRENT (mA)

20 40 60

100 120 140 160

LT1121 • TA02

1121fg

12 3 4 5 6 7...16

中文翻译

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与LT1121_15相关器件

型号	品牌	获取价格	描述	数据表
LT1121-3.3	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121-3.3_15	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121-5	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121-5_15	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121ACS8	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121ACS8#PBF	Linear	获取价格	LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SO; Pins: 8; Temperatur
LT1121ACS8#TR	Linear	获取价格	LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SO; Pins: 8; Temperatur
LT1121ACS8#TRPBF	Linear	获取价格	LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SO; Pins: 8; Temperatur
LT1121ACS8-3.3	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121ACS8-3.3#PBF	Linear	获取价格	LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SO; Pins: 8; Temperatur

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