LT1521CS8

更新时间： 2024-11-21 22:55:51

品牌	Logo	应用领域
凌特 - Linear		稳压器调节器光电二极管输出元件
页数	文件大小	规格书
16页	298K
描述
300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown

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LT1521CS8 数据手册

LT1521/LT1521-3

LT1521-3.3/LT1521-5

300mA Low Dropout

Regulators with Micropower

Quiescent Current and Shutdown

FEATURES

DESCRIPTION

The LT^®1521/LT1521-3/LT1521-3.3/LT1521-5 are low

dropout regulators with micropower quiescent current

and shutdown. These devices are capable of supplying

300mA of output current with a dropout voltage of 0.5V.

Designed for use in battery-powered systems, the low

quiescent current, 12µA operating and 6µA 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.

■

Dropout Voltage: 0.5V

Output Current: 300mA

Quiescent Current: 12µA

■

No Protection Diodes Needed

Adjustable Output from 3.8V to 20V

Fixed Output Voltages: 3V, 3.3V, 5V

Controlled Quiescent Current in Dropout

Shutdown I_Q= 6µA

Reverse Battery Protection

No Reverse Current

Other features of the LT1521/LT1521-3/LT1521-3.3/

LT1521-5 include the ability to operate with very small

output capacitors. They are stable with only 1.5µF on the

outputwhilemostolderdevicesrequirebetween10µFand

100µF for stability. Small ceramic capacitors can be used,

enhancing manufacturability. Also, the input may be con-

nectedtovoltageslowerthantheoutputvoltage,including

negative voltages, without reverse current flow from out-

puttoinput.ThismakestheLT1521seriesidealforbackup

power situations where the output is held high and the

input is low or reversed. Under these conditions only 5µA

will flow from the output pin to ground.

Thermal Limiting

APPLICATIONS

■

Low Current Regulator

■

Regulator for Battery-Powered Systems

■

Post Regulator for Switching Supplies

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATION

Dropout Voltage

5V Battery-Powered Supply with Shutdown

0.6

300mA

OUT

0.5

1µF

1.5µF

LT1521-5

0.4

SHDN

SENSE

GND

0.3

0.2

0.1

(PIN 5) OUTPUT

SHDN

<0.25

>2.80

OFF

LT1521 • TA01

100

150

200

250

300

OUTPUT CURRENT (mA)

LT1521 • TA02

12 3 4 5 6 7...16

中文翻译

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LT1521CS8 替代型号

型号	品牌	替代类型	描述	数据表
LT1521CS8#TRPBF	Linear	完全替代	LT1521 - 300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown; Pack
LT1521IS8	Linear	完全替代	300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown

与LT1521CS8相关器件

型号	品牌	获取价格	描述	数据表
LT1521CS8#TRPBF	Linear	获取价格	LT1521 - 300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown; Pack
LT1521CS8-3	Linear	获取价格	300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown
LT1521CS8-3#PBF	Linear	获取价格	LT1521 - 300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown; Pack
LT1521CS8-3#TR	Linear	获取价格	暂无描述
LT1521CS8-3#TRPBF	Linear	获取价格	LT1521 - 300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown; Pack
LT1521CS8-3.0	Linear	获取价格	IC VREG 3 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8, Fixed Positive Single Outp
LT1521CS8-3.3	Linear	获取价格	300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown
LT1521CS8-3.3#PBF	Linear	获取价格	暂无描述
LT1521CS8-3-PBF	Linear	获取价格	300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown
LT1521CS8-5	Linear	获取价格	300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown

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