LD39100PUR

更新时间： 2024-11-14 12:48:15

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
23页	863K
描述
1 A, low quiescent current, low noise voltage regulator

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中文翻译

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数据手册

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LD39100PUR 数据手册

LD39100XX

LD39100XX12, LD39100XX25

1 A, low quiescent current, low noise voltage regulator

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

(30 µV

at V

= 0.8 V)

DFN6 (3 x 3 mm)

RMS

OUT

■ Output voltage tolerance: 2.0 % @ 25 °C

■ 1 A guaranteed output current

■ 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

with a typical dropout voltage of 200 mV. The

device 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. 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.

■ 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

Applications

■ Printers

■ Personal digital assistants (PDAs)

■ Cordless phones

■ Consumer applications

Description

The LD39100xx provides 1 A maximum current

from an input voltage ranging from 1.5 V to 5.5 V

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

October 2011

Doc ID 15676 Rev 3

1/23

www.st.com

12 3 4 5 6 7...23

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