Datasheet > LT1129IT-3.3

LT1129IT-3.3

更新时间： 2024-11-22 22:26:03

品牌	Logo	应用领域
凌特 - Linear		稳压器
页数	文件大小	规格书
12页	277K
描述
Micropower Low Dropout Regulators with Shutdown

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中文翻译

获取价格

数据手册

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LT1129IT-3.3 数据手册

LT1129/LT1129-3.3/LT1129-5

Micropower Low Dropout

Regulators with Shutdown

DESCRIPTIO

EATURE

■

The LT1129/LT1129-3.3/LT1129-5 are micropower low

dropout regulators with shutdown. The devices are ca-

pable of supplying 700mA of output current with a drop-

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

in battery-powered systems the low quiescent current,

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

Stable with 3.3µF Output Capacitor

Reverse Battery Protection

No Reverse Output Current

Thermal Limiting

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.

Surface Mount

O U

PPLICATI

■

Low Current Regulator

Regulator for Battery-Powered Systems

Post Regulator for Switching Supplies

5V to 3.3V Logic Regulator

TYPICAL APPLICATI

5V Supply with Shutdown

Dropout Voltage

0.6

5V OUT

500mA

0.5

0.4

0.3

OUT

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

12 3 4 5 6 7...12

中文翻译

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与LT1129IT-3.3相关器件

型号	品牌	获取价格	描述	数据表
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
LT1129IT-5	Linear Systems	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129IT-5	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1129IT-5#PBF	Linear	获取价格	LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: TO-220; Pins: 5; Temper
LT1129MPST-3.3	Linear	获取价格	400mV Dropout Voltage
LT1129MPST-3.3#TR	Linear	获取价格	LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperatu
LT1129MPST-3.3#TRPBF	Linear	获取价格	LT1129 - Micropower Low Dropout Regulators with Shutdown; Package: SOT; Pins: 3; Temperatu
LT1129Q-2.85	Linear	获取价格	IC VREG 2.85 V FIXED POSITIVE LDO REGULATOR, 0.4 V DROPOUT, PSSO5, PLASTIC, D2PAK-5, Fixed
LT1129Q-3.3	Linear	获取价格	IC VREG 3.3 V FIXED POSITIVE LDO REGULATOR, 0.4 V DROPOUT, PSSO5, PLASTIC, D2PAK-5, Fixed

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