Datasheet > LT1129CF-3.3

LT1129CF-3.3

更新时间： 2024-11-27 05:43:23

品牌	Logo	应用领域
Linear Systems		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	175K
描述
Micropower Low Dropout Regulators with Shutdown

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中文翻译

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LT1129CF-3.3 数据手册

LT1129/LT1129-3.3/LT1129-5

Micropower Low Dropout

Regulators with Shutdown

DESCRIPTIO

FEATURES

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

dropout regulators with shutdown. The devices are ca-

pableofsupplying700mAofoutputcurrentwithadropout

voltage of 0.4V at maximum output. Designed for use in

battery-poweredsystemsthelowquiescentcurrent, 50µA

operating and 16µA in shutdown, make them an ideal

choice. The quiescent current does not rise in dropout as

it does with many other low dropout PNP regulators.

■

0.4V 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

Other features of the LT1129 /LT1129-3.3/LT1129-5 in-

clude the ability to operate with small output capacitors.

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

older devices require between 10µF and 100µF for stabil-

ity. Alsotheinputmaybeconnectedtogroundorareverse

voltage without reverse current flow from output to input.

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

backuppowersituationswheretheoutputisheldhighand

theinputisatgroundorreversed. Undertheseconditions,

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

devices are available in 5-lead TO-220, 5-lead DD 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 Packages

APPLICATIO S

■

Low Current Regulator

■

Regulator for Battery-Powered Systems

■

Post Regulator for Switching Supplies

5V to 3.3V Logic Regulator

■

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

All other trademarks are the property of their respective owners.

TYPICAL APPLICATIO

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

LT1129 • TA01

0.4

OUTPUT CURRENT (A)

0.6

0.7

0.1

0.2 0.3

0.5

LT1129 • TA02

112935fc

12 3 4 5 6 7...16

中文翻译

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与LT1129CF-3.3相关器件

型号	品牌	获取价格	描述	数据表
LT1129CF-3.3#PBF	Linear	获取价格	IC VREG 3.3 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PDSO20, 4.40 MM, PLASTIC, TSSOP
LT1129CH2.85	ETC	获取价格	Analog IC
LT1129CQ	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129CQ	Linear Systems	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129CQ-3.3	Linear Systems	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129CQ-3.3	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129CQ-3.3#TR	Linear	获取价格	LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: DD PAK; Pins: 5; Temper
LT1129CQ-3.3#TRPBF	Linear	获取价格	LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: DD PAK; Pins: 5; Temper
LT1129CQ-5	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129CQ-5	Linear Systems	获取价格	Micropower Low Dropout Regulators with Shutdown

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