Datasheet > LT1129IST-3-3

LT1129IST-3-3

更新时间： 2024-11-23 12:49:31

品牌	Logo	应用领域
凌特 - Linear		稳压器
页数	文件大小	规格书
16页	182K
描述
Micropower Low Dropout Regulators with Shutdown

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中文翻译

获取价格

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LT1129IST-3-3 数据手册

LT1129/LT1129-3.3/LT1129-5

Micropower Low Dropout

Regulators with Shutdown

FEATURES

DESCRIPTION

The LT^®1129/LT1129-3.3/LT1129-5 are micropower low

dropoutregulatorswithshutdown.Thedevicesarecapable

of supplying 700mA of output current with a dropout

voltage of 400mV at maximum output. Designed for use

in battery-powered systems, the low quiescent current,

50μAoperatingand16μAinshutdown,makethemanideal

choice. The quiescent current does not rise in dropout as

it does with many other low dropout PNP regulators.

400mV Dropout Voltage

700mA Output Current

50μA Quiescent Current

No Protection Diodes Needed

Adjustable Output from 3.8V to 30V

3.3V and 5V Fixed Output Voltages

Controlled Quiescent Current in Dropout

Shutdown

16μA Quiescent Current in Shutdown

OtherfeaturesoftheLT1129/LT1129-3.3/LT1129-5include

the ability to operate with small output capacitors. They

are stable with only 3.3μF on the output while most older

devicesrequirebetween10μFand100μFforstability. Also

the input may be connected to ground or a reverse voltage

without reverse current ﬂow from output to input. This

makes the LT1129/LT1129-3.3/LT1129-5 ideal for backup

power situations where the output is held high and the

input is at ground or reversed. Under these conditions,

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

devices are available in 5-lead TO-220, 5-lead DD-Pak and

3-lead SOT-223 packages.

Stable with 3.3μF Output Capacitor

Reverse Battery Protection

No Reverse Output Current

Thermal Limiting

Surface Mount SOT-223 and DD-Pak Packages

APPLICATIONS

Low Current Regulator

Regulator for Battery-Powered Systems

Post Regulator for Switching Supplies

5V to 3.3V Logic Regulator

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

All other trademarks are the property of their respective owners.

TYPICAL APPLICATION

5V Supply with Shutdown

Dropout Voltage

0.6

5V OUT

500mA

OUT

0.5

0.4

0.3

LT1129-5

SENSE

GND

3.3μF

SOLID TANTALUM

> 5.5V

SHDN

0.2

0.1

(PIN 4) OUTPUT

SHDN

< 0.25

> 2.8

OFF

112935 TA01

0.4

OUTPUT CURRENT (A)

0.6 0.7

0.1

0.2 0.3

0.5

112935 TA02

112935ff

12 3 4 5 6 7...16

中文翻译

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与LT1129IST-3-3相关器件

型号	品牌	获取价格	描述	数据表
LT1129IST-5	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129IST-5	Linear Systems	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129IST-5#TR	Linear	获取价格	LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperatu
LT1129IST-5#TRPBF	Linear	获取价格	LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperatu
LT1129IT	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129IT	Linear Systems	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129IT-3.3	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129IT-3.3	Linear Systems	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129IT-3.3#TR	Linear	获取价格	IC VREG 3.8 V-30 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSFM5, PLASTIC, TO-22
LT1129IT-3.3#TRPBF	Linear	获取价格	IC VREG 3.8 V-30 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSFM5, LEAD FREE, PLA

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