Datasheet > L1581D-2.5

L1581D-2.5

更新时间： 2024-11-10 22:31:55

品牌	Logo	应用领域
其他 - ETC		稳压器
页数	文件大小	规格书
6页	118K
描述
Dual Input Ultra Low Dropout Voltage Regulator (ULDO)

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L1581D-2.5 数据手册

Dual Input Ultra Low Dropout

Voltage Regulator (ULDO)

L1581 Series

NIKO-SEM

TO-252

GENERAL DESCRIPTION

FEATURES

z Low dropout voltage 600mV at rated load

The L1581 is a positive and very low

dropout voltage regulator with 5A output

current capability. When supplying 2.5V or

2.8V on Motherboards or VGA Card where

both 5V and 3.3V supplies are available,

the superior dropout characteristics of the

L1581 result in reduced heat dissipation

compared to regular LDOs, thus allowing

heat sink reduction. The adjustable version

requires only two external resistors to set

the output. The L1581 features a low

dropout of less than 600mV and offers fast

transient response, remote sense, internal

limiting, thermal shutdown and safe

operating area protection of the output

device.

current

z Remote sense operation

z Fast transient response

z 0.5% voltage reference initial accuracy

z Standard 5 terminal, Low cost TO-252

packages

APPLICATIONS

z 3.3V to 2.8V or 2.5V for Motherboards or

VGA Card

z Spilt plane microprocessor supplies

z Post regulator for switching supplies

The L1581 is a five terminal adjustable

voltage regulator available in the popular 5

pin TO-252 packages.

TYPICAL APPLICATION

Adjustable Output Parts⁽²⁾

L1581X

Vin

Vctrl

Vout

Vin

OUT

CTR'L

SENSE

Vref

Iadj

330uF

10uF

0.033uF

Vo = Vref (1+R2/R1) + Iadj x R2

OCT-11-Y02

12 3 4 5 6

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