Datasheet > LT1123_05

LT1123_05

更新时间： 2024-11-23 04:43:55

品牌	Logo	应用领域
凌特 - Linear		稳压器驱动
页数	文件大小	规格书
16页	157K
描述
Low Dropout Regulator Driver

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LT1123_05 数据手册

LT1123

Low Dropout

Regulator Driver

FEATURES

DESCRIPTIO

The LT^®1123 is a 3-pin bipolar device designed to be used

in conjunction with a discrete PNP power transistor to

form an inexpensive low dropout regulator. The LT1123

consists of a trimmed bandgap reference, error amplifier,

and a driver circuit capable of sinking up to 125mA from

the base of the external PNP pass transistor. The LT1123

is designed to provide a fixed output voltage of 5V.

■

Extremely Low Dropout

■

Low Cost

■

Fixed 5V Output, Trimmed to ±1%

■

700µA Quiescent Current

■

1mV Line Regulation

■

5mV Load Regulation

■

Thermal Limit

■

4A Output Current Guaranteed

The drive pin of the device can pull down to 2V at 125mA

(1.4V at 10mA). This allows a resistor to be used to reduce

the base drive available to the PNP and minimize the

power dissipation in the LT1123. The drive current of the

LT1123 is folded back as the feedback pin approaches

ground to further limit the available drive current under

short-circuit conditions.

■

Available in a 3-Pin TO-92 Package

Total quiescent current for the LT1123 is only 700µA. The

device is available in a low cost TO-92 package.

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

All other trademarks are the property of their respective owners.

TYPICAL APPLICATIO

5V Low Dropout Regulator

Dropout Voltage

0.5

620Ω

20Ω

SEALED

LEAD ACID

5.4 TO 7.2V

MOTOROLA

MJE1123

10µF*

0.4

0.3

0.2

0.1

DRIVE

*REQUIRED IF DEVICE IS

MORE THAN 6" FROM MAIN

FILTER CAPACITOR

^†REQUIRED FOR STABILITY

(LARGER VALUES INCREASE

STABILITY)

OUTPUT = 5V/4A

LT1123 FB

GND

10µF^†

LT1123 TA01

OUTPUT CURRENT (A)

LT1123 TA02

1123fb

12 3 4 5 6 7...16

中文翻译

下载PDF

与LT1123_05相关器件

型号	品牌	获取价格	描述	数据表
LT1123CS8-2.85	ETC	获取价格	Interface IC
LT1123CST	Linear	获取价格	Low Dropout Regulator Driver
LT1123CST#PBF	Linear	获取价格	LT1123 - Low Dropout Regulator Driver; Package: SOT; Pins: 3; Temperature Range: 0&deg
LT1123CST#TR	Linear	获取价格	LT1123 - Low Dropout Regulator Driver; Package: SOT; Pins: 3; Temperature Range: 0&deg
LT1123CST#TRPBF	Linear	获取价格	LT1123 - Low Dropout Regulator Driver; Package: SOT; Pins: 3; Temperature Range: 0&deg
LT1123CZ	Linear	获取价格	Low Dropout Regulator Driver
LT1123CZ#TR	Linear	获取价格	LT1123 - Low Dropout Regulator Driver; Package: TO-92; Pins: 3; Temperature Range: 0&d
LT1123CZ#TRPBF	Linear	获取价格	LT1123 - Low Dropout Regulator Driver; Package: TO-92; Pins: 3; Temperature Range: 0&d
LT1123CZ2.85	ETC	获取价格	Interface IC
LT1124	Linear	获取价格	Dual/Quad Low Noise, High Speed Precision Op Amps