Datasheet > LD39100XX25

LD39100XX25

更新时间： 2024-11-14 11:37:47

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		稳压器
页数	文件大小	规格书
24页	847K
描述
1 A, low quiescent current, low noise voltage regulator

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LD39100XX25 数据手册

LD39100XX

LD39100XX12, LD39100XX25

1 A, low quiescent current, low noise voltage regulator

Preliminary data

Features

■ Input voltage from 1.5 to 5.5 V

■ Ultra low dropout voltage (200 mV typ. at 1 A

load)

■ Very low quiescent current (20 µA typ. at no

load, 200 µA typ. at 1 A load, 1 µA max in off

mode)

■ Very low noise with no bypass capacitor

DFN6 (3 x 3 mm)

(30 µV

at V

= 0.8 V)

RMS

OUT

■ Output voltage tolerance: 2.0 % @ 25 °C

■ 1 A guaranteed output current

An enable logic control function puts the

LD39100xx in shutdown mode, allowing a total

current consumption lower than 1 µA. The device

also includes short-circuit constant current limiting

and thermal protection. Typical applications are

printers, personal digital assistants (PDAs),

cordless phones and consumer applications.

■ Wide range of output voltages available on

request: 0.8 V to 4.5 V with 100 mV step and

adjustable from 0.8 V

■ Logic-controlled electronic shutdown

■ Stabilized with ceramic capacitors C

■ Internal current and thermal limit

■ DFN6 (3 x 3 mm) package

= 1 µF

OUT

■ Temperature range: - 40 °C to 125 °C

Description

The LD39100xx provides 1 A maximum current

from an input voltage ranging from 1.5 V to 5.5 V

with a typical dropout voltage of 200 mV. The

deveice is stable due to the use of ceramic

capacitors on the input and output. The ultra low

drop-voltage, low quiescent current and low noise

features make it suitable for low power battery

powered applications. Power supply rejection is

65 dB at low frequencies and starts to roll off at 10

kHz.

Table 1.

Device summary

Part numbers

Order codes

Output voltages

LD39100XX

LD39100XX12

LD39100XX25

LD39100PUR

LD39100PU12R

LD39100PU25R

Adj. from 0.8 V

1.2 V

2.5 V

April 2010

Doc ID 15676 Rev 2

1/24

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to

change without notice.

www.st.com

12 3 4 5 6 7...24

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